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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-23 01:43:01 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-23 01:43:01 -0400
commitcaebc160ce3f76761cc62ad96ef6d6f30f54e3dd (patch)
tree6bedd4a62d65a4ba121a0c170d1ca657d922d352
parentd798f7f080805ad7e15fc37a43d8c6f91edb6dda (diff)
parent5fc7b14177b1a1c2f2511aed62a4ca870d0332e7 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: use mark_buffer_dirty to mark btnode or meta data dirty nilfs2: always set back pointer to host inode in mapping->host nilfs2: get rid of NILFS_I_NILFS nilfs2: use list_first_entry nilfs2: use empty_aops for gc-inodes nilfs2: implement resize ioctl nilfs2: add truncation routine of segment usage file nilfs2: add routine to move secondary super block nilfs2: add ioctl which limits range of segment to be allocated nilfs2: zero fill unused portion of super root block nilfs2: super root size should change depending on inode size nilfs2: get rid of private page allocator nilfs2: merge list_del()/list_add_tail() to list_move_tail()
Diffstat
-rw-r--r--fs/nilfs2/alloc.c12
-rw-r--r--fs/nilfs2/bmap.c4
-rw-r--r--fs/nilfs2/btnode.c19
-rw-r--r--fs/nilfs2/btnode.h4
-rw-r--r--fs/nilfs2/btree.c38
-rw-r--r--fs/nilfs2/cpfile.c24
-rw-r--r--fs/nilfs2/dat.c4
-rw-r--r--fs/nilfs2/file.c1
-rw-r--r--fs/nilfs2/gcinode.c25
-rw-r--r--fs/nilfs2/ifile.c4
-rw-r--r--fs/nilfs2/inode.c23
-rw-r--r--fs/nilfs2/ioctl.c61
-rw-r--r--fs/nilfs2/mdt.c8
-rw-r--r--fs/nilfs2/mdt.h9
-rw-r--r--fs/nilfs2/nilfs.h7
-rw-r--r--fs/nilfs2/page.c79
-rw-r--r--fs/nilfs2/page.h7
-rw-r--r--fs/nilfs2/recovery.c12
-rw-r--r--fs/nilfs2/segbuf.c17
-rw-r--r--fs/nilfs2/segment.c190
-rw-r--r--fs/nilfs2/segment.h2
-rw-r--r--fs/nilfs2/sufile.c274
-rw-r--r--fs/nilfs2/sufile.h4
-rw-r--r--fs/nilfs2/super.c131
-rw-r--r--fs/nilfs2/the_nilfs.c24
-rw-r--r--fs/nilfs2/the_nilfs.h2
-rw-r--r--include/linux/nilfs2_fs.h4
27 files changed, 603 insertions, 386 deletions
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index f7684483785e..eed4d7b26249 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -489,8 +489,8 @@ int nilfs_palloc_prepare_alloc_entry(struct inode *inode,
489void nilfs_palloc_commit_alloc_entry(struct inode *inode, 489void nilfs_palloc_commit_alloc_entry(struct inode *inode,
490 struct nilfs_palloc_req *req) 490 struct nilfs_palloc_req *req)
491{ 491{
492 nilfs_mdt_mark_buffer_dirty(req->pr_bitmap_bh); 492 mark_buffer_dirty(req->pr_bitmap_bh);
493 nilfs_mdt_mark_buffer_dirty(req->pr_desc_bh); 493 mark_buffer_dirty(req->pr_desc_bh);
494 nilfs_mdt_mark_dirty(inode); 494 nilfs_mdt_mark_dirty(inode);
495 495
496 brelse(req->pr_bitmap_bh); 496 brelse(req->pr_bitmap_bh);
@@ -527,8 +527,8 @@ void nilfs_palloc_commit_free_entry(struct inode *inode,
527 kunmap(req->pr_bitmap_bh->b_page); 527 kunmap(req->pr_bitmap_bh->b_page);
528 kunmap(req->pr_desc_bh->b_page); 528 kunmap(req->pr_desc_bh->b_page);
529 529
530 nilfs_mdt_mark_buffer_dirty(req->pr_desc_bh); 530 mark_buffer_dirty(req->pr_desc_bh);
531 nilfs_mdt_mark_buffer_dirty(req->pr_bitmap_bh); 531 mark_buffer_dirty(req->pr_bitmap_bh);
532 nilfs_mdt_mark_dirty(inode); 532 nilfs_mdt_mark_dirty(inode);
533 533
534 brelse(req->pr_bitmap_bh); 534 brelse(req->pr_bitmap_bh);
@@ -683,8 +683,8 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems)
683 kunmap(bitmap_bh->b_page); 683 kunmap(bitmap_bh->b_page);
684 kunmap(desc_bh->b_page); 684 kunmap(desc_bh->b_page);
685 685
686 nilfs_mdt_mark_buffer_dirty(desc_bh); 686 mark_buffer_dirty(desc_bh);
687 nilfs_mdt_mark_buffer_dirty(bitmap_bh); 687 mark_buffer_dirty(bitmap_bh);
688 nilfs_mdt_mark_dirty(inode); 688 nilfs_mdt_mark_dirty(inode);
689 689
690 brelse(bitmap_bh); 690 brelse(bitmap_bh);
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index 4723f04e9b12..aadbd0b5e3e8 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -34,7 +34,9 @@
34 34
35struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap) 35struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap)
36{ 36{
37 return NILFS_I_NILFS(bmap->b_inode)->ns_dat; 37 struct the_nilfs *nilfs = bmap->b_inode->i_sb->s_fs_info;
38
39 return nilfs->ns_dat;
38} 40}
39 41
40static int nilfs_bmap_convert_error(struct nilfs_bmap *bmap, 42static int nilfs_bmap_convert_error(struct nilfs_bmap *bmap,
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 609cd223eea8..a35ae35e6932 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -34,12 +34,6 @@
34#include "page.h" 34#include "page.h"
35#include "btnode.h" 35#include "btnode.h"
36 36
37void nilfs_btnode_cache_init(struct address_space *btnc,
38 struct backing_dev_info *bdi)
39{
40 nilfs_mapping_init(btnc, bdi);
41}
42
43void nilfs_btnode_cache_clear(struct address_space *btnc) 37void nilfs_btnode_cache_clear(struct address_space *btnc)
44{ 38{
45 invalidate_mapping_pages(btnc, 0, -1); 39 invalidate_mapping_pages(btnc, 0, -1);
@@ -62,7 +56,7 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64 blocknr)
62 BUG(); 56 BUG();
63 } 57 }
64 memset(bh->b_data, 0, 1 << inode->i_blkbits); 58 memset(bh->b_data, 0, 1 << inode->i_blkbits);
65 bh->b_bdev = NILFS_I_NILFS(inode)->ns_bdev; 59 bh->b_bdev = inode->i_sb->s_bdev;
66 bh->b_blocknr = blocknr; 60 bh->b_blocknr = blocknr;
67 set_buffer_mapped(bh); 61 set_buffer_mapped(bh);
68 set_buffer_uptodate(bh); 62 set_buffer_uptodate(bh);
@@ -94,10 +88,11 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
94 if (pblocknr == 0) { 88 if (pblocknr == 0) {
95 pblocknr = blocknr; 89 pblocknr = blocknr;
96 if (inode->i_ino != NILFS_DAT_INO) { 90 if (inode->i_ino != NILFS_DAT_INO) {
97 struct inode *dat = NILFS_I_NILFS(inode)->ns_dat; 91 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
98 92
99 /* blocknr is a virtual block number */ 93 /* blocknr is a virtual block number */
100 err = nilfs_dat_translate(dat, blocknr, &pblocknr); 94 err = nilfs_dat_translate(nilfs->ns_dat, blocknr,
95 &pblocknr);
101 if (unlikely(err)) { 96 if (unlikely(err)) {
102 brelse(bh); 97 brelse(bh);
103 goto out_locked; 98 goto out_locked;
@@ -120,7 +115,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
120 goto found; 115 goto found;
121 } 116 }
122 set_buffer_mapped(bh); 117 set_buffer_mapped(bh);
123 bh->b_bdev = NILFS_I_NILFS(inode)->ns_bdev; 118 bh->b_bdev = inode->i_sb->s_bdev;
124 bh->b_blocknr = pblocknr; /* set block address for read */ 119 bh->b_blocknr = pblocknr; /* set block address for read */
125 bh->b_end_io = end_buffer_read_sync; 120 bh->b_end_io = end_buffer_read_sync;
126 get_bh(bh); 121 get_bh(bh);
@@ -259,7 +254,7 @@ void nilfs_btnode_commit_change_key(struct address_space *btnc,
259 "invalid oldkey %lld (newkey=%lld)", 254 "invalid oldkey %lld (newkey=%lld)",
260 (unsigned long long)oldkey, 255 (unsigned long long)oldkey,
261 (unsigned long long)newkey); 256 (unsigned long long)newkey);
262 nilfs_btnode_mark_dirty(obh); 257 mark_buffer_dirty(obh);
263 258
264 spin_lock_irq(&btnc->tree_lock); 259 spin_lock_irq(&btnc->tree_lock);
265 radix_tree_delete(&btnc->page_tree, oldkey); 260 radix_tree_delete(&btnc->page_tree, oldkey);
@@ -271,7 +266,7 @@ void nilfs_btnode_commit_change_key(struct address_space *btnc,
271 unlock_page(opage); 266 unlock_page(opage);
272 } else { 267 } else {
273 nilfs_copy_buffer(nbh, obh); 268 nilfs_copy_buffer(nbh, obh);
274 nilfs_btnode_mark_dirty(nbh); 269 mark_buffer_dirty(nbh);
275 270
276 nbh->b_blocknr = newkey; 271 nbh->b_blocknr = newkey;
277 ctxt->bh = nbh; 272 ctxt->bh = nbh;
diff --git a/fs/nilfs2/btnode.h b/fs/nilfs2/btnode.h
index 1b8ebd888c28..3a4dd2d8d3fc 100644
--- a/fs/nilfs2/btnode.h
+++ b/fs/nilfs2/btnode.h
@@ -37,7 +37,6 @@ struct nilfs_btnode_chkey_ctxt {
37 struct buffer_head *newbh; 37 struct buffer_head *newbh;
38}; 38};
39 39
40void nilfs_btnode_cache_init(struct address_space *, struct backing_dev_info *);
41void nilfs_btnode_cache_clear(struct address_space *); 40void nilfs_btnode_cache_clear(struct address_space *);
42struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc, 41struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc,
43 __u64 blocknr); 42 __u64 blocknr);
@@ -51,7 +50,4 @@ void nilfs_btnode_commit_change_key(struct address_space *,
51void nilfs_btnode_abort_change_key(struct address_space *, 50void nilfs_btnode_abort_change_key(struct address_space *,
52 struct nilfs_btnode_chkey_ctxt *); 51 struct nilfs_btnode_chkey_ctxt *);
53 52
54#define nilfs_btnode_mark_dirty(bh) nilfs_mark_buffer_dirty(bh)
55
56
57#endif /* _NILFS_BTNODE_H */ 53#endif /* _NILFS_BTNODE_H */
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index d451ae0e0bf3..7eafe468a29c 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -714,7 +714,7 @@ static void nilfs_btree_promote_key(struct nilfs_bmap *btree,
714 nilfs_btree_get_nonroot_node(path, level), 714 nilfs_btree_get_nonroot_node(path, level),
715 path[level].bp_index, key); 715 path[level].bp_index, key);
716 if (!buffer_dirty(path[level].bp_bh)) 716 if (!buffer_dirty(path[level].bp_bh))
717 nilfs_btnode_mark_dirty(path[level].bp_bh); 717 mark_buffer_dirty(path[level].bp_bh);
718 } while ((path[level].bp_index == 0) && 718 } while ((path[level].bp_index == 0) &&
719 (++level < nilfs_btree_height(btree) - 1)); 719 (++level < nilfs_btree_height(btree) - 1));
720 } 720 }
@@ -739,7 +739,7 @@ static void nilfs_btree_do_insert(struct nilfs_bmap *btree,
739 nilfs_btree_node_insert(node, path[level].bp_index, 739 nilfs_btree_node_insert(node, path[level].bp_index,
740 *keyp, *ptrp, ncblk); 740 *keyp, *ptrp, ncblk);
741 if (!buffer_dirty(path[level].bp_bh)) 741 if (!buffer_dirty(path[level].bp_bh))
742 nilfs_btnode_mark_dirty(path[level].bp_bh); 742 mark_buffer_dirty(path[level].bp_bh);
743 743
744 if (path[level].bp_index == 0) 744 if (path[level].bp_index == 0)
745 nilfs_btree_promote_key(btree, path, level + 1, 745 nilfs_btree_promote_key(btree, path, level + 1,
@@ -777,9 +777,9 @@ static void nilfs_btree_carry_left(struct nilfs_bmap *btree,
777 nilfs_btree_node_move_left(left, node, n, ncblk, ncblk); 777 nilfs_btree_node_move_left(left, node, n, ncblk, ncblk);
778 778
779 if (!buffer_dirty(path[level].bp_bh)) 779 if (!buffer_dirty(path[level].bp_bh))
780 nilfs_btnode_mark_dirty(path[level].bp_bh); 780 mark_buffer_dirty(path[level].bp_bh);
781 if (!buffer_dirty(path[level].bp_sib_bh)) 781 if (!buffer_dirty(path[level].bp_sib_bh))
782 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 782 mark_buffer_dirty(path[level].bp_sib_bh);
783 783
784 nilfs_btree_promote_key(btree, path, level + 1, 784 nilfs_btree_promote_key(btree, path, level + 1,
785 nilfs_btree_node_get_key(node, 0)); 785 nilfs_btree_node_get_key(node, 0));
@@ -823,9 +823,9 @@ static void nilfs_btree_carry_right(struct nilfs_bmap *btree,
823 nilfs_btree_node_move_right(node, right, n, ncblk, ncblk); 823 nilfs_btree_node_move_right(node, right, n, ncblk, ncblk);
824 824
825 if (!buffer_dirty(path[level].bp_bh)) 825 if (!buffer_dirty(path[level].bp_bh))
826 nilfs_btnode_mark_dirty(path[level].bp_bh); 826 mark_buffer_dirty(path[level].bp_bh);
827 if (!buffer_dirty(path[level].bp_sib_bh)) 827 if (!buffer_dirty(path[level].bp_sib_bh))
828 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 828 mark_buffer_dirty(path[level].bp_sib_bh);
829 829
830 path[level + 1].bp_index++; 830 path[level + 1].bp_index++;
831 nilfs_btree_promote_key(btree, path, level + 1, 831 nilfs_btree_promote_key(btree, path, level + 1,
@@ -870,9 +870,9 @@ static void nilfs_btree_split(struct nilfs_bmap *btree,
870 nilfs_btree_node_move_right(node, right, n, ncblk, ncblk); 870 nilfs_btree_node_move_right(node, right, n, ncblk, ncblk);
871 871
872 if (!buffer_dirty(path[level].bp_bh)) 872 if (!buffer_dirty(path[level].bp_bh))
873 nilfs_btnode_mark_dirty(path[level].bp_bh); 873 mark_buffer_dirty(path[level].bp_bh);
874 if (!buffer_dirty(path[level].bp_sib_bh)) 874 if (!buffer_dirty(path[level].bp_sib_bh))
875 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 875 mark_buffer_dirty(path[level].bp_sib_bh);
876 876
877 newkey = nilfs_btree_node_get_key(right, 0); 877 newkey = nilfs_btree_node_get_key(right, 0);
878 newptr = path[level].bp_newreq.bpr_ptr; 878 newptr = path[level].bp_newreq.bpr_ptr;
@@ -919,7 +919,7 @@ static void nilfs_btree_grow(struct nilfs_bmap *btree,
919 nilfs_btree_node_set_level(root, level + 1); 919 nilfs_btree_node_set_level(root, level + 1);
920 920
921 if (!buffer_dirty(path[level].bp_sib_bh)) 921 if (!buffer_dirty(path[level].bp_sib_bh))
922 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 922 mark_buffer_dirty(path[level].bp_sib_bh);
923 923
924 path[level].bp_bh = path[level].bp_sib_bh; 924 path[level].bp_bh = path[level].bp_sib_bh;
925 path[level].bp_sib_bh = NULL; 925 path[level].bp_sib_bh = NULL;
@@ -1194,7 +1194,7 @@ static void nilfs_btree_do_delete(struct nilfs_bmap *btree,
1194 nilfs_btree_node_delete(node, path[level].bp_index, 1194 nilfs_btree_node_delete(node, path[level].bp_index,
1195 keyp, ptrp, ncblk); 1195 keyp, ptrp, ncblk);
1196 if (!buffer_dirty(path[level].bp_bh)) 1196 if (!buffer_dirty(path[level].bp_bh))
1197 nilfs_btnode_mark_dirty(path[level].bp_bh); 1197 mark_buffer_dirty(path[level].bp_bh);
1198 if (path[level].bp_index == 0) 1198 if (path[level].bp_index == 0)
1199 nilfs_btree_promote_key(btree, path, level + 1, 1199 nilfs_btree_promote_key(btree, path, level + 1,
1200 nilfs_btree_node_get_key(node, 0)); 1200 nilfs_btree_node_get_key(node, 0));
@@ -1226,9 +1226,9 @@ static void nilfs_btree_borrow_left(struct nilfs_bmap *btree,
1226 nilfs_btree_node_move_right(left, node, n, ncblk, ncblk); 1226 nilfs_btree_node_move_right(left, node, n, ncblk, ncblk);
1227 1227
1228 if (!buffer_dirty(path[level].bp_bh)) 1228 if (!buffer_dirty(path[level].bp_bh))
1229 nilfs_btnode_mark_dirty(path[level].bp_bh); 1229 mark_buffer_dirty(path[level].bp_bh);
1230 if (!buffer_dirty(path[level].bp_sib_bh)) 1230 if (!buffer_dirty(path[level].bp_sib_bh))
1231 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 1231 mark_buffer_dirty(path[level].bp_sib_bh);
1232 1232
1233 nilfs_btree_promote_key(btree, path, level + 1, 1233 nilfs_btree_promote_key(btree, path, level + 1,
1234 nilfs_btree_node_get_key(node, 0)); 1234 nilfs_btree_node_get_key(node, 0));
@@ -1258,9 +1258,9 @@ static void nilfs_btree_borrow_right(struct nilfs_bmap *btree,
1258 nilfs_btree_node_move_left(node, right, n, ncblk, ncblk); 1258 nilfs_btree_node_move_left(node, right, n, ncblk, ncblk);
1259 1259
1260 if (!buffer_dirty(path[level].bp_bh)) 1260 if (!buffer_dirty(path[level].bp_bh))
1261 nilfs_btnode_mark_dirty(path[level].bp_bh); 1261 mark_buffer_dirty(path[level].bp_bh);
1262 if (!buffer_dirty(path[level].bp_sib_bh)) 1262 if (!buffer_dirty(path[level].bp_sib_bh))
1263 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 1263 mark_buffer_dirty(path[level].bp_sib_bh);
1264 1264
1265 path[level + 1].bp_index++; 1265 path[level + 1].bp_index++;
1266 nilfs_btree_promote_key(btree, path, level + 1, 1266 nilfs_btree_promote_key(btree, path, level + 1,
@@ -1289,7 +1289,7 @@ static void nilfs_btree_concat_left(struct nilfs_bmap *btree,
1289 nilfs_btree_node_move_left(left, node, n, ncblk, ncblk); 1289 nilfs_btree_node_move_left(left, node, n, ncblk, ncblk);
1290 1290
1291 if (!buffer_dirty(path[level].bp_sib_bh)) 1291 if (!buffer_dirty(path[level].bp_sib_bh))
1292 nilfs_btnode_mark_dirty(path[level].bp_sib_bh); 1292 mark_buffer_dirty(path[level].bp_sib_bh);
1293 1293
1294 nilfs_btnode_delete(path[level].bp_bh); 1294 nilfs_btnode_delete(path[level].bp_bh);
1295 path[level].bp_bh = path[level].bp_sib_bh; 1295 path[level].bp_bh = path[level].bp_sib_bh;
@@ -1315,7 +1315,7 @@ static void nilfs_btree_concat_right(struct nilfs_bmap *btree,
1315 nilfs_btree_node_move_left(node, right, n, ncblk, ncblk); 1315 nilfs_btree_node_move_left(node, right, n, ncblk, ncblk);
1316 1316
1317 if (!buffer_dirty(path[level].bp_bh)) 1317 if (!buffer_dirty(path[level].bp_bh))
1318 nilfs_btnode_mark_dirty(path[level].bp_bh); 1318 mark_buffer_dirty(path[level].bp_bh);
1319 1319
1320 nilfs_btnode_delete(path[level].bp_sib_bh); 1320 nilfs_btnode_delete(path[level].bp_sib_bh);
1321 path[level].bp_sib_bh = NULL; 1321 path[level].bp_sib_bh = NULL;
@@ -1709,7 +1709,7 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *btree,
1709 nilfs_btree_node_init(node, 0, 1, n, ncblk, keys, ptrs); 1709 nilfs_btree_node_init(node, 0, 1, n, ncblk, keys, ptrs);
1710 nilfs_btree_node_insert(node, n, key, dreq->bpr_ptr, ncblk); 1710 nilfs_btree_node_insert(node, n, key, dreq->bpr_ptr, ncblk);
1711 if (!buffer_dirty(bh)) 1711 if (!buffer_dirty(bh))
1712 nilfs_btnode_mark_dirty(bh); 1712 mark_buffer_dirty(bh);
1713 if (!nilfs_bmap_dirty(btree)) 1713 if (!nilfs_bmap_dirty(btree))
1714 nilfs_bmap_set_dirty(btree); 1714 nilfs_bmap_set_dirty(btree);
1715 1715
@@ -1787,7 +1787,7 @@ static int nilfs_btree_propagate_p(struct nilfs_bmap *btree,
1787{ 1787{
1788 while ((++level < nilfs_btree_height(btree) - 1) && 1788 while ((++level < nilfs_btree_height(btree) - 1) &&
1789 !buffer_dirty(path[level].bp_bh)) 1789 !buffer_dirty(path[level].bp_bh))
1790 nilfs_btnode_mark_dirty(path[level].bp_bh); 1790 mark_buffer_dirty(path[level].bp_bh);
1791 1791
1792 return 0; 1792 return 0;
1793} 1793}
@@ -2229,7 +2229,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *btree, __u64 key, int level)
2229 } 2229 }
2230 2230
2231 if (!buffer_dirty(bh)) 2231 if (!buffer_dirty(bh))
2232 nilfs_btnode_mark_dirty(bh); 2232 mark_buffer_dirty(bh);
2233 brelse(bh); 2233 brelse(bh);
2234 if (!nilfs_bmap_dirty(btree)) 2234 if (!nilfs_bmap_dirty(btree))
2235 nilfs_bmap_set_dirty(btree); 2235 nilfs_bmap_set_dirty(btree);
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index 5ff15a8a1024..c9b342c8b503 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -216,14 +216,14 @@ int nilfs_cpfile_get_checkpoint(struct inode *cpfile,
216 if (!nilfs_cpfile_is_in_first(cpfile, cno)) 216 if (!nilfs_cpfile_is_in_first(cpfile, cno))
217 nilfs_cpfile_block_add_valid_checkpoints(cpfile, cp_bh, 217 nilfs_cpfile_block_add_valid_checkpoints(cpfile, cp_bh,
218 kaddr, 1); 218 kaddr, 1);
219 nilfs_mdt_mark_buffer_dirty(cp_bh); 219 mark_buffer_dirty(cp_bh);
220 220
221 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 221 kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
222 header = nilfs_cpfile_block_get_header(cpfile, header_bh, 222 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
223 kaddr); 223 kaddr);
224 le64_add_cpu(&header->ch_ncheckpoints, 1); 224 le64_add_cpu(&header->ch_ncheckpoints, 1);
225 kunmap_atomic(kaddr, KM_USER0); 225 kunmap_atomic(kaddr, KM_USER0);
226 nilfs_mdt_mark_buffer_dirty(header_bh); 226 mark_buffer_dirty(header_bh);
227 nilfs_mdt_mark_dirty(cpfile); 227 nilfs_mdt_mark_dirty(cpfile);
228 } 228 }
229 229
@@ -326,7 +326,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
326 } 326 }
327 if (nicps > 0) { 327 if (nicps > 0) {
328 tnicps += nicps; 328 tnicps += nicps;
329 nilfs_mdt_mark_buffer_dirty(cp_bh); 329 mark_buffer_dirty(cp_bh);
330 nilfs_mdt_mark_dirty(cpfile); 330 nilfs_mdt_mark_dirty(cpfile);
331 if (!nilfs_cpfile_is_in_first(cpfile, cno)) { 331 if (!nilfs_cpfile_is_in_first(cpfile, cno)) {
332 count = 332 count =
@@ -358,7 +358,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
358 header = nilfs_cpfile_block_get_header(cpfile, header_bh, 358 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
359 kaddr); 359 kaddr);
360 le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps); 360 le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps);
361 nilfs_mdt_mark_buffer_dirty(header_bh); 361 mark_buffer_dirty(header_bh);
362 nilfs_mdt_mark_dirty(cpfile); 362 nilfs_mdt_mark_dirty(cpfile);
363 kunmap_atomic(kaddr, KM_USER0); 363 kunmap_atomic(kaddr, KM_USER0);
364 } 364 }
@@ -671,10 +671,10 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
671 le64_add_cpu(&header->ch_nsnapshots, 1); 671 le64_add_cpu(&header->ch_nsnapshots, 1);
672 kunmap_atomic(kaddr, KM_USER0); 672 kunmap_atomic(kaddr, KM_USER0);
673 673
674 nilfs_mdt_mark_buffer_dirty(prev_bh); 674 mark_buffer_dirty(prev_bh);
675 nilfs_mdt_mark_buffer_dirty(curr_bh); 675 mark_buffer_dirty(curr_bh);
676 nilfs_mdt_mark_buffer_dirty(cp_bh); 676 mark_buffer_dirty(cp_bh);
677 nilfs_mdt_mark_buffer_dirty(header_bh); 677 mark_buffer_dirty(header_bh);
678 nilfs_mdt_mark_dirty(cpfile); 678 nilfs_mdt_mark_dirty(cpfile);
679 679
680 brelse(prev_bh); 680 brelse(prev_bh);
@@ -774,10 +774,10 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
774 le64_add_cpu(&header->ch_nsnapshots, -1); 774 le64_add_cpu(&header->ch_nsnapshots, -1);
775 kunmap_atomic(kaddr, KM_USER0); 775 kunmap_atomic(kaddr, KM_USER0);
776 776
777 nilfs_mdt_mark_buffer_dirty(next_bh); 777 mark_buffer_dirty(next_bh);
778 nilfs_mdt_mark_buffer_dirty(prev_bh); 778 mark_buffer_dirty(prev_bh);
779 nilfs_mdt_mark_buffer_dirty(cp_bh); 779 mark_buffer_dirty(cp_bh);
780 nilfs_mdt_mark_buffer_dirty(header_bh); 780 mark_buffer_dirty(header_bh);
781 nilfs_mdt_mark_dirty(cpfile); 781 nilfs_mdt_mark_dirty(cpfile);
782 782
783 brelse(prev_bh); 783 brelse(prev_bh);
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 59e5fe742f7b..fcc2f869af16 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -54,7 +54,7 @@ static int nilfs_dat_prepare_entry(struct inode *dat,
54static void nilfs_dat_commit_entry(struct inode *dat, 54static void nilfs_dat_commit_entry(struct inode *dat,
55 struct nilfs_palloc_req *req) 55 struct nilfs_palloc_req *req)
56{ 56{
57 nilfs_mdt_mark_buffer_dirty(req->pr_entry_bh); 57 mark_buffer_dirty(req->pr_entry_bh);
58 nilfs_mdt_mark_dirty(dat); 58 nilfs_mdt_mark_dirty(dat);
59 brelse(req->pr_entry_bh); 59 brelse(req->pr_entry_bh);
60} 60}
@@ -361,7 +361,7 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
361 entry->de_blocknr = cpu_to_le64(blocknr); 361 entry->de_blocknr = cpu_to_le64(blocknr);
362 kunmap_atomic(kaddr, KM_USER0); 362 kunmap_atomic(kaddr, KM_USER0);
363 363
364 nilfs_mdt_mark_buffer_dirty(entry_bh); 364 mark_buffer_dirty(entry_bh);
365 nilfs_mdt_mark_dirty(dat); 365 nilfs_mdt_mark_dirty(dat);
366 366
367 brelse(entry_bh); 367 brelse(entry_bh);
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 397e73258631..d7eeca62febd 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -111,7 +111,6 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
111 nilfs_transaction_commit(inode->i_sb); 111 nilfs_transaction_commit(inode->i_sb);
112 112
113 mapped: 113 mapped:
114 SetPageChecked(page);
115 wait_on_page_writeback(page); 114 wait_on_page_writeback(page);
116 return VM_FAULT_LOCKED; 115 return VM_FAULT_LOCKED;
117} 116}
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index 1c2a3e23f8b2..08a07a218d26 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -48,9 +48,6 @@
48#include "dat.h" 48#include "dat.h"
49#include "ifile.h" 49#include "ifile.h"
50 50
51static const struct address_space_operations def_gcinode_aops = {
52};
53
54/* 51/*
55 * nilfs_gccache_submit_read_data() - add data buffer and submit read request 52 * nilfs_gccache_submit_read_data() - add data buffer and submit read request
56 * @inode - gc inode 53 * @inode - gc inode
@@ -87,9 +84,9 @@ int nilfs_gccache_submit_read_data(struct inode *inode, sector_t blkoff,
87 goto out; 84 goto out;
88 85
89 if (pbn == 0) { 86 if (pbn == 0) {
90 struct inode *dat_inode = NILFS_I_NILFS(inode)->ns_dat; 87 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
91 /* use original dat, not gc dat. */ 88
92 err = nilfs_dat_translate(dat_inode, vbn, &pbn); 89 err = nilfs_dat_translate(nilfs->ns_dat, vbn, &pbn);
93 if (unlikely(err)) { /* -EIO, -ENOMEM, -ENOENT */ 90 if (unlikely(err)) { /* -EIO, -ENOMEM, -ENOENT */
94 brelse(bh); 91 brelse(bh);
95 goto failed; 92 goto failed;
@@ -103,7 +100,7 @@ int nilfs_gccache_submit_read_data(struct inode *inode, sector_t blkoff,
103 } 100 }
104 101
105 if (!buffer_mapped(bh)) { 102 if (!buffer_mapped(bh)) {
106 bh->b_bdev = NILFS_I_NILFS(inode)->ns_bdev; 103 bh->b_bdev = inode->i_sb->s_bdev;
107 set_buffer_mapped(bh); 104 set_buffer_mapped(bh);
108 } 105 }
109 bh->b_blocknr = pbn; 106 bh->b_blocknr = pbn;
@@ -160,15 +157,11 @@ int nilfs_gccache_wait_and_mark_dirty(struct buffer_head *bh)
160 if (buffer_dirty(bh)) 157 if (buffer_dirty(bh))
161 return -EEXIST; 158 return -EEXIST;
162 159
163 if (buffer_nilfs_node(bh)) { 160 if (buffer_nilfs_node(bh) && nilfs_btree_broken_node_block(bh)) {
164 if (nilfs_btree_broken_node_block(bh)) { 161 clear_buffer_uptodate(bh);
165 clear_buffer_uptodate(bh); 162 return -EIO;
166 return -EIO;
167 }
168 nilfs_btnode_mark_dirty(bh);
169 } else {
170 nilfs_mark_buffer_dirty(bh);
171 } 163 }
164 mark_buffer_dirty(bh);
172 return 0; 165 return 0;
173} 166}
174 167
@@ -178,7 +171,7 @@ int nilfs_init_gcinode(struct inode *inode)
178 171
179 inode->i_mode = S_IFREG; 172 inode->i_mode = S_IFREG;
180 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 173 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
181 inode->i_mapping->a_ops = &def_gcinode_aops; 174 inode->i_mapping->a_ops = &empty_aops;
182 inode->i_mapping->backing_dev_info = inode->i_sb->s_bdi; 175 inode->i_mapping->backing_dev_info = inode->i_sb->s_bdi;
183 176
184 ii->i_flags = 0; 177 ii->i_flags = 0;
diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
index bfc73d3a30ed..684d76300a80 100644
--- a/fs/nilfs2/ifile.c
+++ b/fs/nilfs2/ifile.c
@@ -80,7 +80,7 @@ int nilfs_ifile_create_inode(struct inode *ifile, ino_t *out_ino,
80 return ret; 80 return ret;
81 } 81 }
82 nilfs_palloc_commit_alloc_entry(ifile, &req); 82 nilfs_palloc_commit_alloc_entry(ifile, &req);
83 nilfs_mdt_mark_buffer_dirty(req.pr_entry_bh); 83 mark_buffer_dirty(req.pr_entry_bh);
84 nilfs_mdt_mark_dirty(ifile); 84 nilfs_mdt_mark_dirty(ifile);
85 *out_ino = (ino_t)req.pr_entry_nr; 85 *out_ino = (ino_t)req.pr_entry_nr;
86 *out_bh = req.pr_entry_bh; 86 *out_bh = req.pr_entry_bh;
@@ -128,7 +128,7 @@ int nilfs_ifile_delete_inode(struct inode *ifile, ino_t ino)
128 raw_inode->i_flags = 0; 128 raw_inode->i_flags = 0;
129 kunmap_atomic(kaddr, KM_USER0); 129 kunmap_atomic(kaddr, KM_USER0);
130 130
131 nilfs_mdt_mark_buffer_dirty(req.pr_entry_bh); 131 mark_buffer_dirty(req.pr_entry_bh);
132 brelse(req.pr_entry_bh); 132 brelse(req.pr_entry_bh);
133 133
134 nilfs_palloc_commit_free_entry(ifile, &req); 134 nilfs_palloc_commit_free_entry(ifile, &req);
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index c0aa27490c02..587f18432832 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -74,14 +74,14 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
74 struct buffer_head *bh_result, int create) 74 struct buffer_head *bh_result, int create)
75{ 75{
76 struct nilfs_inode_info *ii = NILFS_I(inode); 76 struct nilfs_inode_info *ii = NILFS_I(inode);
77 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
77 __u64 blknum = 0; 78 __u64 blknum = 0;
78 int err = 0, ret; 79 int err = 0, ret;
79 struct inode *dat = NILFS_I_NILFS(inode)->ns_dat;
80 unsigned maxblocks = bh_result->b_size >> inode->i_blkbits; 80 unsigned maxblocks = bh_result->b_size >> inode->i_blkbits;
81 81
82 down_read(&NILFS_MDT(dat)->mi_sem); 82 down_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
83 ret = nilfs_bmap_lookup_contig(ii->i_bmap, blkoff, &blknum, maxblocks); 83 ret = nilfs_bmap_lookup_contig(ii->i_bmap, blkoff, &blknum, maxblocks);
84 up_read(&NILFS_MDT(dat)->mi_sem); 84 up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
85 if (ret >= 0) { /* found */ 85 if (ret >= 0) { /* found */
86 map_bh(bh_result, inode->i_sb, blknum); 86 map_bh(bh_result, inode->i_sb, blknum);
87 if (ret > 0) 87 if (ret > 0)
@@ -596,6 +596,16 @@ void nilfs_write_inode_common(struct inode *inode,
596 raw_inode->i_flags = cpu_to_le32(ii->i_flags); 596 raw_inode->i_flags = cpu_to_le32(ii->i_flags);
597 raw_inode->i_generation = cpu_to_le32(inode->i_generation); 597 raw_inode->i_generation = cpu_to_le32(inode->i_generation);
598 598
599 if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) {
600 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
601
602 /* zero-fill unused portion in the case of super root block */
603 raw_inode->i_xattr = 0;
604 raw_inode->i_pad = 0;
605 memset((void *)raw_inode + sizeof(*raw_inode), 0,
606 nilfs->ns_inode_size - sizeof(*raw_inode));
607 }
608
599 if (has_bmap) 609 if (has_bmap)
600 nilfs_bmap_write(ii->i_bmap, raw_inode); 610 nilfs_bmap_write(ii->i_bmap, raw_inode);
601 else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 611 else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
@@ -872,8 +882,7 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty)
872 return -EINVAL; /* NILFS_I_DIRTY may remain for 882 return -EINVAL; /* NILFS_I_DIRTY may remain for
873 freeing inode */ 883 freeing inode */
874 } 884 }
875 list_del(&ii->i_dirty); 885 list_move_tail(&ii->i_dirty, &nilfs->ns_dirty_files);
876 list_add_tail(&ii->i_dirty, &nilfs->ns_dirty_files);
877 set_bit(NILFS_I_QUEUED, &ii->i_state); 886 set_bit(NILFS_I_QUEUED, &ii->i_state);
878 } 887 }
879 spin_unlock(&nilfs->ns_inode_lock); 888 spin_unlock(&nilfs->ns_inode_lock);
@@ -892,7 +901,7 @@ int nilfs_mark_inode_dirty(struct inode *inode)
892 return err; 901 return err;
893 } 902 }
894 nilfs_update_inode(inode, ibh); 903 nilfs_update_inode(inode, ibh);
895 nilfs_mdt_mark_buffer_dirty(ibh); 904 mark_buffer_dirty(ibh);
896 nilfs_mdt_mark_dirty(NILFS_I(inode)->i_root->ifile); 905 nilfs_mdt_mark_dirty(NILFS_I(inode)->i_root->ifile);
897 brelse(ibh); 906 brelse(ibh);
898 return 0; 907 return 0;
@@ -931,7 +940,7 @@ void nilfs_dirty_inode(struct inode *inode)
931int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 940int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
932 __u64 start, __u64 len) 941 __u64 start, __u64 len)
933{ 942{
934 struct the_nilfs *nilfs = NILFS_I_NILFS(inode); 943 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
935 __u64 logical = 0, phys = 0, size = 0; 944 __u64 logical = 0, phys = 0, size = 0;
936 __u32 flags = 0; 945 __u32 flags = 0;
937 loff_t isize; 946 loff_t isize;
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index f2469ba6246b..41d6743d303c 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -698,6 +698,63 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
698 return 0; 698 return 0;
699} 699}
700 700
701static int nilfs_ioctl_resize(struct inode *inode, struct file *filp,
702 void __user *argp)
703{
704 __u64 newsize;
705 int ret = -EPERM;
706
707 if (!capable(CAP_SYS_ADMIN))
708 goto out;
709
710 ret = mnt_want_write(filp->f_path.mnt);
711 if (ret)
712 goto out;
713
714 ret = -EFAULT;
715 if (copy_from_user(&newsize, argp, sizeof(newsize)))
716 goto out_drop_write;
717
718 ret = nilfs_resize_fs(inode->i_sb, newsize);
719
720out_drop_write:
721 mnt_drop_write(filp->f_path.mnt);
722out:
723 return ret;
724}
725
726static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp)
727{
728 struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
729 __u64 range[2];
730 __u64 minseg, maxseg;
731 unsigned long segbytes;
732 int ret = -EPERM;
733
734 if (!capable(CAP_SYS_ADMIN))
735 goto out;
736
737 ret = -EFAULT;
738 if (copy_from_user(range, argp, sizeof(__u64[2])))
739 goto out;
740
741 ret = -ERANGE;
742 if (range[1] > i_size_read(inode->i_sb->s_bdev->bd_inode))
743 goto out;
744
745 segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize;
746
747 minseg = range[0] + segbytes - 1;
748 do_div(minseg, segbytes);
749 maxseg = NILFS_SB2_OFFSET_BYTES(range[1]);
750 do_div(maxseg, segbytes);
751 maxseg--;
752
753 ret = nilfs_sufile_set_alloc_range(nilfs->ns_sufile, minseg, maxseg);
754out:
755 return ret;
756}
757
701static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, 758static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp,
702 unsigned int cmd, void __user *argp, 759 unsigned int cmd, void __user *argp,
703 size_t membsz, 760 size_t membsz,
@@ -763,6 +820,10 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
763 return nilfs_ioctl_clean_segments(inode, filp, cmd, argp); 820 return nilfs_ioctl_clean_segments(inode, filp, cmd, argp);
764 case NILFS_IOCTL_SYNC: 821 case NILFS_IOCTL_SYNC:
765 return nilfs_ioctl_sync(inode, filp, cmd, argp); 822 return nilfs_ioctl_sync(inode, filp, cmd, argp);
823 case NILFS_IOCTL_RESIZE:
824 return nilfs_ioctl_resize(inode, filp, argp);
825 case NILFS_IOCTL_SET_ALLOC_RANGE:
826 return nilfs_ioctl_set_alloc_range(inode, argp);
766 default: 827 default:
767 return -ENOTTY; 828 return -ENOTTY;
768 } 829 }
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index a649b05f7069..800e8d78a83b 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -66,7 +66,7 @@ nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block,
66 kunmap_atomic(kaddr, KM_USER0); 66 kunmap_atomic(kaddr, KM_USER0);
67 67
68 set_buffer_uptodate(bh); 68 set_buffer_uptodate(bh);
69 nilfs_mark_buffer_dirty(bh); 69 mark_buffer_dirty(bh);
70 nilfs_mdt_mark_dirty(inode); 70 nilfs_mdt_mark_dirty(inode);
71 return 0; 71 return 0;
72} 72}
@@ -355,7 +355,7 @@ int nilfs_mdt_mark_block_dirty(struct inode *inode, unsigned long block)
355 err = nilfs_mdt_read_block(inode, block, 0, &bh); 355 err = nilfs_mdt_read_block(inode, block, 0, &bh);
356 if (unlikely(err)) 356 if (unlikely(err))
357 return err; 357 return err;
358 nilfs_mark_buffer_dirty(bh); 358 mark_buffer_dirty(bh);
359 nilfs_mdt_mark_dirty(inode); 359 nilfs_mdt_mark_dirty(inode);
360 brelse(bh); 360 brelse(bh);
361 return 0; 361 return 0;
@@ -450,9 +450,9 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode,
450 450
451 INIT_LIST_HEAD(&shadow->frozen_buffers); 451 INIT_LIST_HEAD(&shadow->frozen_buffers);
452 address_space_init_once(&shadow->frozen_data); 452 address_space_init_once(&shadow->frozen_data);
453 nilfs_mapping_init(&shadow->frozen_data, bdi); 453 nilfs_mapping_init(&shadow->frozen_data, inode, bdi);
454 address_space_init_once(&shadow->frozen_btnodes); 454 address_space_init_once(&shadow->frozen_btnodes);
455 nilfs_mapping_init(&shadow->frozen_btnodes, bdi); 455 nilfs_mapping_init(&shadow->frozen_btnodes, inode, bdi);
456 mi->mi_shadow = shadow; 456 mi->mi_shadow = shadow;
457 return 0; 457 return 0;
458} 458}
diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index ed68563ec708..ab20a4baa50f 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -64,11 +64,6 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode)
64 return inode->i_private; 64 return inode->i_private;
65} 65}
66 66
67static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode)
68{
69 return inode->i_sb->s_fs_info;
70}
71
72/* Default GFP flags using highmem */ 67/* Default GFP flags using highmem */
73#define NILFS_MDT_GFP (__GFP_WAIT | __GFP_IO | __GFP_HIGHMEM) 68#define NILFS_MDT_GFP (__GFP_WAIT | __GFP_IO | __GFP_HIGHMEM)
74 69
@@ -93,8 +88,6 @@ int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh);
93struct buffer_head *nilfs_mdt_get_frozen_buffer(struct inode *inode, 88struct buffer_head *nilfs_mdt_get_frozen_buffer(struct inode *inode,
94 struct buffer_head *bh); 89 struct buffer_head *bh);
95 90
96#define nilfs_mdt_mark_buffer_dirty(bh) nilfs_mark_buffer_dirty(bh)
97
98static inline void nilfs_mdt_mark_dirty(struct inode *inode) 91static inline void nilfs_mdt_mark_dirty(struct inode *inode)
99{ 92{
100 if (!test_bit(NILFS_I_DIRTY, &NILFS_I(inode)->i_state)) 93 if (!test_bit(NILFS_I_DIRTY, &NILFS_I(inode)->i_state))
@@ -108,7 +101,7 @@ static inline void nilfs_mdt_clear_dirty(struct inode *inode)
108 101
109static inline __u64 nilfs_mdt_cno(struct inode *inode) 102static inline __u64 nilfs_mdt_cno(struct inode *inode)
110{ 103{
111 return NILFS_I_NILFS(inode)->ns_cno; 104 return ((struct the_nilfs *)inode->i_sb->s_fs_info)->ns_cno;
112} 105}
113 106
114#define nilfs_mdt_bgl_lock(inode, bg) \ 107#define nilfs_mdt_bgl_lock(inode, bg) \
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index a8dd344303cb..a9c6a531f80c 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -80,12 +80,6 @@ static inline struct inode *NILFS_BTNC_I(struct address_space *btnc)
80 return &ii->vfs_inode; 80 return &ii->vfs_inode;
81} 81}
82 82
83static inline struct inode *NILFS_AS_I(struct address_space *mapping)
84{
85 return (mapping->host) ? :
86 container_of(mapping, struct inode, i_data);
87}
88
89/* 83/*
90 * Dynamic state flags of NILFS on-memory inode (i_state) 84 * Dynamic state flags of NILFS on-memory inode (i_state)
91 */ 85 */
@@ -298,6 +292,7 @@ struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb,
298 int flip); 292 int flip);
299int nilfs_commit_super(struct super_block *sb, int flag); 293int nilfs_commit_super(struct super_block *sb, int flag);
300int nilfs_cleanup_super(struct super_block *sb); 294int nilfs_cleanup_super(struct super_block *sb);
295int nilfs_resize_fs(struct super_block *sb, __u64 newsize);
301int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt, 296int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
302 struct nilfs_root **root); 297 struct nilfs_root **root);
303int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno); 298int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno);
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 1168059c7efd..65221a04c6f0 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -37,8 +37,7 @@
37 37
38#define NILFS_BUFFER_INHERENT_BITS \ 38#define NILFS_BUFFER_INHERENT_BITS \
39 ((1UL << BH_Uptodate) | (1UL << BH_Mapped) | (1UL << BH_NILFS_Node) | \ 39 ((1UL << BH_Uptodate) | (1UL << BH_Mapped) | (1UL << BH_NILFS_Node) | \
40 (1UL << BH_NILFS_Volatile) | (1UL << BH_NILFS_Allocated) | \ 40 (1UL << BH_NILFS_Volatile) | (1UL << BH_NILFS_Checked))
41 (1UL << BH_NILFS_Checked))
42 41
43static struct buffer_head * 42static struct buffer_head *
44__nilfs_get_page_block(struct page *page, unsigned long block, pgoff_t index, 43__nilfs_get_page_block(struct page *page, unsigned long block, pgoff_t index,
@@ -59,19 +58,6 @@ __nilfs_get_page_block(struct page *page, unsigned long block, pgoff_t index,
59 return bh; 58 return bh;
60} 59}
61 60
62/*
63 * Since the page cache of B-tree node pages or data page cache of pseudo
64 * inodes does not have a valid mapping->host pointer, calling
65 * mark_buffer_dirty() for their buffers causes a NULL pointer dereference;
66 * it calls __mark_inode_dirty(NULL) through __set_page_dirty().
67 * To avoid this problem, the old style mark_buffer_dirty() is used instead.
68 */
69void nilfs_mark_buffer_dirty(struct buffer_head *bh)
70{
71 if (!buffer_dirty(bh) && !test_set_buffer_dirty(bh))
72 __set_page_dirty_nobuffers(bh->b_page);
73}
74
75struct buffer_head *nilfs_grab_buffer(struct inode *inode, 61struct buffer_head *nilfs_grab_buffer(struct inode *inode,
76 struct address_space *mapping, 62 struct address_space *mapping,
77 unsigned long blkoff, 63 unsigned long blkoff,
@@ -183,7 +169,7 @@ int nilfs_page_buffers_clean(struct page *page)
183void nilfs_page_bug(struct page *page) 169void nilfs_page_bug(struct page *page)
184{ 170{
185 struct address_space *m; 171 struct address_space *m;
186 unsigned long ino = 0; 172 unsigned long ino;
187 173
188 if (unlikely(!page)) { 174 if (unlikely(!page)) {
189 printk(KERN_CRIT "NILFS_PAGE_BUG(NULL)\n"); 175 printk(KERN_CRIT "NILFS_PAGE_BUG(NULL)\n");
@@ -191,11 +177,8 @@ void nilfs_page_bug(struct page *page)
191 } 177 }
192 178
193 m = page->mapping; 179 m = page->mapping;
194 if (m) { 180 ino = m ? m->host->i_ino : 0;
195 struct inode *inode = NILFS_AS_I(m); 181
196 if (inode != NULL)
197 ino = inode->i_ino;
198 }
199 printk(KERN_CRIT "NILFS_PAGE_BUG(%p): cnt=%d index#=%llu flags=0x%lx " 182 printk(KERN_CRIT "NILFS_PAGE_BUG(%p): cnt=%d index#=%llu flags=0x%lx "
200 "mapping=%p ino=%lu\n", 183 "mapping=%p ino=%lu\n",
201 page, atomic_read(&page->_count), 184 page, atomic_read(&page->_count),
@@ -217,56 +200,6 @@ void nilfs_page_bug(struct page *page)
217} 200}
218 201
219/** 202/**
220 * nilfs_alloc_private_page - allocate a private page with buffer heads
221 *
222 * Return Value: On success, a pointer to the allocated page is returned.
223 * On error, NULL is returned.
224 */
225struct page *nilfs_alloc_private_page(struct block_device *bdev, int size,
226 unsigned long state)
227{
228 struct buffer_head *bh, *head, *tail;
229 struct page *page;
230
231 page = alloc_page(GFP_NOFS); /* page_count of the returned page is 1 */
232 if (unlikely(!page))
233 return NULL;
234
235 lock_page(page);
236 head = alloc_page_buffers(page, size, 0);
237 if (unlikely(!head)) {
238 unlock_page(page);
239 __free_page(page);
240 return NULL;
241 }
242
243 bh = head;
244 do {
245 bh->b_state = (1UL << BH_NILFS_Allocated) | state;
246 tail = bh;
247 bh->b_bdev = bdev;
248 bh = bh->b_this_page;
249 } while (bh);
250
251 tail->b_this_page = head;
252 attach_page_buffers(page, head);
253
254 return page;
255}
256
257void nilfs_free_private_page(struct page *page)
258{
259 BUG_ON(!PageLocked(page));
260 BUG_ON(page->mapping);
261
262 if (page_has_buffers(page) && !try_to_free_buffers(page))
263 NILFS_PAGE_BUG(page, "failed to free page");
264
265 unlock_page(page);
266 __free_page(page);
267}
268
269/**
270 * nilfs_copy_page -- copy the page with buffers 203 * nilfs_copy_page -- copy the page with buffers
271 * @dst: destination page 204 * @dst: destination page
272 * @src: source page 205 * @src: source page
@@ -492,10 +425,10 @@ unsigned nilfs_page_count_clean_buffers(struct page *page,
492 return nc; 425 return nc;
493} 426}
494 427
495void nilfs_mapping_init(struct address_space *mapping, 428void nilfs_mapping_init(struct address_space *mapping, struct inode *inode,
496 struct backing_dev_info *bdi) 429 struct backing_dev_info *bdi)
497{ 430{
498 mapping->host = NULL; 431 mapping->host = inode;
499 mapping->flags = 0; 432 mapping->flags = 0;
500 mapping_set_gfp_mask(mapping, GFP_NOFS); 433 mapping_set_gfp_mask(mapping, GFP_NOFS);
501 mapping->assoc_mapping = NULL; 434 mapping->assoc_mapping = NULL;
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h
index f06b79ad7493..fb7de71605a0 100644
--- a/fs/nilfs2/page.h
+++ b/fs/nilfs2/page.h
@@ -38,14 +38,12 @@ enum {
38 BH_NILFS_Redirected, 38 BH_NILFS_Redirected,
39}; 39};
40 40
41BUFFER_FNS(NILFS_Allocated, nilfs_allocated) /* nilfs private buffers */
42BUFFER_FNS(NILFS_Node, nilfs_node) /* nilfs node buffers */ 41BUFFER_FNS(NILFS_Node, nilfs_node) /* nilfs node buffers */
43BUFFER_FNS(NILFS_Volatile, nilfs_volatile) 42BUFFER_FNS(NILFS_Volatile, nilfs_volatile)
44BUFFER_FNS(NILFS_Checked, nilfs_checked) /* buffer is verified */ 43BUFFER_FNS(NILFS_Checked, nilfs_checked) /* buffer is verified */
45BUFFER_FNS(NILFS_Redirected, nilfs_redirected) /* redirected to a copy */ 44BUFFER_FNS(NILFS_Redirected, nilfs_redirected) /* redirected to a copy */
46 45
47 46
48void nilfs_mark_buffer_dirty(struct buffer_head *bh);
49int __nilfs_clear_page_dirty(struct page *); 47int __nilfs_clear_page_dirty(struct page *);
50 48
51struct buffer_head *nilfs_grab_buffer(struct inode *, struct address_space *, 49struct buffer_head *nilfs_grab_buffer(struct inode *, struct address_space *,
@@ -54,14 +52,11 @@ void nilfs_forget_buffer(struct buffer_head *);
54void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *); 52void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *);
55int nilfs_page_buffers_clean(struct page *); 53int nilfs_page_buffers_clean(struct page *);
56void nilfs_page_bug(struct page *); 54void nilfs_page_bug(struct page *);
57struct page *nilfs_alloc_private_page(struct block_device *, int,
58 unsigned long);
59void nilfs_free_private_page(struct page *);
60 55
61int nilfs_copy_dirty_pages(struct address_space *, struct address_space *); 56int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
62void nilfs_copy_back_pages(struct address_space *, struct address_space *); 57void nilfs_copy_back_pages(struct address_space *, struct address_space *);
63void nilfs_clear_dirty_pages(struct address_space *); 58void nilfs_clear_dirty_pages(struct address_space *);
64void nilfs_mapping_init(struct address_space *mapping, 59void nilfs_mapping_init(struct address_space *mapping, struct inode *inode,
65 struct backing_dev_info *bdi); 60 struct backing_dev_info *bdi);
66unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned); 61unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned);
67unsigned long nilfs_find_uncommitted_extent(struct inode *inode, 62unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index ba4a64518f38..a604ac0331b2 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -387,9 +387,9 @@ static int nilfs_scan_dsync_log(struct the_nilfs *nilfs, sector_t start_blocknr,
387static void dispose_recovery_list(struct list_head *head) 387static void dispose_recovery_list(struct list_head *head)
388{ 388{
389 while (!list_empty(head)) { 389 while (!list_empty(head)) {
390 struct nilfs_recovery_block *rb 390 struct nilfs_recovery_block *rb;
391 = list_entry(head->next, 391
392 struct nilfs_recovery_block, list); 392 rb = list_first_entry(head, struct nilfs_recovery_block, list);
393 list_del(&rb->list); 393 list_del(&rb->list);
394 kfree(rb); 394 kfree(rb);
395 } 395 }
@@ -416,9 +416,9 @@ static int nilfs_segment_list_add(struct list_head *head, __u64 segnum)
416void nilfs_dispose_segment_list(struct list_head *head) 416void nilfs_dispose_segment_list(struct list_head *head)
417{ 417{
418 while (!list_empty(head)) { 418 while (!list_empty(head)) {
419 struct nilfs_segment_entry *ent 419 struct nilfs_segment_entry *ent;
420 = list_entry(head->next, 420
421 struct nilfs_segment_entry, list); 421 ent = list_first_entry(head, struct nilfs_segment_entry, list);
422 list_del(&ent->list); 422 list_del(&ent->list);
423 kfree(ent); 423 kfree(ent);
424 } 424 }
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 2853ff20f85a..850a7c0228fb 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -239,12 +239,15 @@ nilfs_segbuf_fill_in_super_root_crc(struct nilfs_segment_buffer *segbuf,
239 u32 seed) 239 u32 seed)
240{ 240{
241 struct nilfs_super_root *raw_sr; 241 struct nilfs_super_root *raw_sr;
242 struct the_nilfs *nilfs = segbuf->sb_super->s_fs_info;
243 unsigned srsize;
242 u32 crc; 244 u32 crc;
243 245
244 raw_sr = (struct nilfs_super_root *)segbuf->sb_super_root->b_data; 246 raw_sr = (struct nilfs_super_root *)segbuf->sb_super_root->b_data;
247 srsize = NILFS_SR_BYTES(nilfs->ns_inode_size);
245 crc = crc32_le(seed, 248 crc = crc32_le(seed,
246 (unsigned char *)raw_sr + sizeof(raw_sr->sr_sum), 249 (unsigned char *)raw_sr + sizeof(raw_sr->sr_sum),
247 NILFS_SR_BYTES - sizeof(raw_sr->sr_sum)); 250 srsize - sizeof(raw_sr->sr_sum));
248 raw_sr->sr_sum = cpu_to_le32(crc); 251 raw_sr->sr_sum = cpu_to_le32(crc);
249} 252}
250 253
@@ -254,18 +257,6 @@ static void nilfs_release_buffers(struct list_head *list)
254 257
255 list_for_each_entry_safe(bh, n, list, b_assoc_buffers) { 258 list_for_each_entry_safe(bh, n, list, b_assoc_buffers) {
256 list_del_init(&bh->b_assoc_buffers); 259 list_del_init(&bh->b_assoc_buffers);
257 if (buffer_nilfs_allocated(bh)) {
258 struct page *clone_page = bh->b_page;
259
260 /* remove clone page */
261 brelse(bh);
262 page_cache_release(clone_page); /* for each bh */
263 if (page_count(clone_page) <= 2) {
264 lock_page(clone_page);
265 nilfs_free_private_page(clone_page);
266 }
267 continue;
268 }
269 brelse(bh); 260 brelse(bh);
270 } 261 }
271} 262}
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index afe4f2183454..141646e88fb5 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -655,13 +655,10 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
655 if (unlikely(page->index > last)) 655 if (unlikely(page->index > last))
656 break; 656 break;
657 657
658 if (mapping->host) { 658 lock_page(page);
659 lock_page(page); 659 if (!page_has_buffers(page))
660 if (!page_has_buffers(page)) 660 create_empty_buffers(page, 1 << inode->i_blkbits, 0);
661 create_empty_buffers(page, 661 unlock_page(page);
662 1 << inode->i_blkbits, 0);
663 unlock_page(page);
664 }
665 662
666 bh = head = page_buffers(page); 663 bh = head = page_buffers(page);
667 do { 664 do {
@@ -809,7 +806,7 @@ static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci)
809 /* The following code is duplicated with cpfile. But, it is 806 /* The following code is duplicated with cpfile. But, it is
810 needed to collect the checkpoint even if it was not newly 807 needed to collect the checkpoint even if it was not newly
811 created */ 808 created */
812 nilfs_mdt_mark_buffer_dirty(bh_cp); 809 mark_buffer_dirty(bh_cp);
813 nilfs_mdt_mark_dirty(nilfs->ns_cpfile); 810 nilfs_mdt_mark_dirty(nilfs->ns_cpfile);
814 nilfs_cpfile_put_checkpoint( 811 nilfs_cpfile_put_checkpoint(
815 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); 812 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp);
@@ -889,12 +886,14 @@ static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci,
889{ 886{
890 struct buffer_head *bh_sr; 887 struct buffer_head *bh_sr;
891 struct nilfs_super_root *raw_sr; 888 struct nilfs_super_root *raw_sr;
892 unsigned isz = nilfs->ns_inode_size; 889 unsigned isz, srsz;
893 890
894 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; 891 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root;
895 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; 892 raw_sr = (struct nilfs_super_root *)bh_sr->b_data;
893 isz = nilfs->ns_inode_size;
894 srsz = NILFS_SR_BYTES(isz);
896 895
897 raw_sr->sr_bytes = cpu_to_le16(NILFS_SR_BYTES); 896 raw_sr->sr_bytes = cpu_to_le16(srsz);
898 raw_sr->sr_nongc_ctime 897 raw_sr->sr_nongc_ctime
899 = cpu_to_le64(nilfs_doing_gc() ? 898 = cpu_to_le64(nilfs_doing_gc() ?
900 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); 899 nilfs->ns_nongc_ctime : sci->sc_seg_ctime);
@@ -906,6 +905,7 @@ static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci,
906 NILFS_SR_CPFILE_OFFSET(isz), 1); 905 NILFS_SR_CPFILE_OFFSET(isz), 1);
907 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + 906 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr +
908 NILFS_SR_SUFILE_OFFSET(isz), 1); 907 NILFS_SR_SUFILE_OFFSET(isz), 1);
908 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz);
909} 909}
910 910
911static void nilfs_redirty_inodes(struct list_head *head) 911static void nilfs_redirty_inodes(struct list_head *head)
@@ -954,8 +954,8 @@ static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci,
954 954
955 dispose_buffers: 955 dispose_buffers:
956 while (!list_empty(listp)) { 956 while (!list_empty(listp)) {
957 bh = list_entry(listp->next, struct buffer_head, 957 bh = list_first_entry(listp, struct buffer_head,
958 b_assoc_buffers); 958 b_assoc_buffers);
959 list_del_init(&bh->b_assoc_buffers); 959 list_del_init(&bh->b_assoc_buffers);
960 brelse(bh); 960 brelse(bh);
961 } 961 }
@@ -1500,10 +1500,7 @@ nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci,
1500 nblocks = le32_to_cpu(finfo->fi_nblocks); 1500 nblocks = le32_to_cpu(finfo->fi_nblocks);
1501 ndatablk = le32_to_cpu(finfo->fi_ndatablk); 1501 ndatablk = le32_to_cpu(finfo->fi_ndatablk);
1502 1502
1503 if (buffer_nilfs_node(bh)) 1503 inode = bh->b_page->mapping->host;
1504 inode = NILFS_BTNC_I(bh->b_page->mapping);
1505 else
1506 inode = NILFS_AS_I(bh->b_page->mapping);
1507 1504
1508 if (mode == SC_LSEG_DSYNC) 1505 if (mode == SC_LSEG_DSYNC)
1509 sc_op = &nilfs_sc_dsync_ops; 1506 sc_op = &nilfs_sc_dsync_ops;
@@ -1556,83 +1553,24 @@ static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode)
1556 return 0; 1553 return 0;
1557} 1554}
1558 1555
1559static int 1556static void nilfs_begin_page_io(struct page *page)
1560nilfs_copy_replace_page_buffers(struct page *page, struct list_head *out)
1561{
1562 struct page *clone_page;
1563 struct buffer_head *bh, *head, *bh2;
1564 void *kaddr;
1565
1566 bh = head = page_buffers(page);
1567
1568 clone_page = nilfs_alloc_private_page(bh->b_bdev, bh->b_size, 0);
1569 if (unlikely(!clone_page))
1570 return -ENOMEM;
1571
1572 bh2 = page_buffers(clone_page);
1573 kaddr = kmap_atomic(page, KM_USER0);
1574 do {
1575 if (list_empty(&bh->b_assoc_buffers))
1576 continue;
1577 get_bh(bh2);
1578 page_cache_get(clone_page); /* for each bh */
1579 memcpy(bh2->b_data, kaddr + bh_offset(bh), bh2->b_size);
1580 bh2->b_blocknr = bh->b_blocknr;
1581 list_replace(&bh->b_assoc_buffers, &bh2->b_assoc_buffers);
1582 list_add_tail(&bh->b_assoc_buffers, out);
1583 } while (bh = bh->b_this_page, bh2 = bh2->b_this_page, bh != head);
1584 kunmap_atomic(kaddr, KM_USER0);
1585
1586 if (!TestSetPageWriteback(clone_page))
1587 account_page_writeback(clone_page);
1588 unlock_page(clone_page);
1589
1590 return 0;
1591}
1592
1593static int nilfs_test_page_to_be_frozen(struct page *page)
1594{
1595 struct address_space *mapping = page->mapping;
1596
1597 if (!mapping || !mapping->host || S_ISDIR(mapping->host->i_mode))
1598 return 0;
1599
1600 if (page_mapped(page)) {
1601 ClearPageChecked(page);
1602 return 1;
1603 }
1604 return PageChecked(page);
1605}
1606
1607static int nilfs_begin_page_io(struct page *page, struct list_head *out)
1608{ 1557{
1609 if (!page || PageWriteback(page)) 1558 if (!page || PageWriteback(page))
1610 /* For split b-tree node pages, this function may be called 1559 /* For split b-tree node pages, this function may be called
1611 twice. We ignore the 2nd or later calls by this check. */ 1560 twice. We ignore the 2nd or later calls by this check. */
1612 return 0; 1561 return;
1613 1562
1614 lock_page(page); 1563 lock_page(page);
1615 clear_page_dirty_for_io(page); 1564 clear_page_dirty_for_io(page);
1616 set_page_writeback(page); 1565 set_page_writeback(page);
1617 unlock_page(page); 1566 unlock_page(page);
1618
1619 if (nilfs_test_page_to_be_frozen(page)) {
1620 int err = nilfs_copy_replace_page_buffers(page, out);
1621 if (unlikely(err))
1622 return err;
1623 }
1624 return 0;
1625} 1567}
1626 1568
1627static int nilfs_segctor_prepare_write(struct nilfs_sc_info *sci, 1569static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci)
1628 struct page **failed_page)
1629{ 1570{
1630 struct nilfs_segment_buffer *segbuf; 1571 struct nilfs_segment_buffer *segbuf;
1631 struct page *bd_page = NULL, *fs_page = NULL; 1572 struct page *bd_page = NULL, *fs_page = NULL;
1632 struct list_head *list = &sci->sc_copied_buffers;
1633 int err;
1634 1573
1635 *failed_page = NULL;
1636 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { 1574 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) {
1637 struct buffer_head *bh; 1575 struct buffer_head *bh;
1638 1576
@@ -1662,11 +1600,7 @@ static int nilfs_segctor_prepare_write(struct nilfs_sc_info *sci,
1662 break; 1600 break;
1663 } 1601 }
1664 if (bh->b_page != fs_page) { 1602 if (bh->b_page != fs_page) {
1665 err = nilfs_begin_page_io(fs_page, list); 1603 nilfs_begin_page_io(fs_page);
1666 if (unlikely(err)) {
1667 *failed_page = fs_page;
1668 goto out;
1669 }
1670 fs_page = bh->b_page; 1604 fs_page = bh->b_page;
1671 } 1605 }
1672 } 1606 }
@@ -1677,11 +1611,7 @@ static int nilfs_segctor_prepare_write(struct nilfs_sc_info *sci,
1677 set_page_writeback(bd_page); 1611 set_page_writeback(bd_page);
1678 unlock_page(bd_page); 1612 unlock_page(bd_page);
1679 } 1613 }
1680 err = nilfs_begin_page_io(fs_page, list); 1614 nilfs_begin_page_io(fs_page);
1681 if (unlikely(err))
1682 *failed_page = fs_page;
1683 out:
1684 return err;
1685} 1615}
1686 1616
1687static int nilfs_segctor_write(struct nilfs_sc_info *sci, 1617static int nilfs_segctor_write(struct nilfs_sc_info *sci,
@@ -1694,24 +1624,6 @@ static int nilfs_segctor_write(struct nilfs_sc_info *sci,
1694 return ret; 1624 return ret;
1695} 1625}
1696 1626
1697static void __nilfs_end_page_io(struct page *page, int err)
1698{
1699 if (!err) {
1700 if (!nilfs_page_buffers_clean(page))
1701 __set_page_dirty_nobuffers(page);
1702 ClearPageError(page);
1703 } else {
1704 __set_page_dirty_nobuffers(page);
1705 SetPageError(page);
1706 }
1707
1708 if (buffer_nilfs_allocated(page_buffers(page))) {
1709 if (TestClearPageWriteback(page))
1710 dec_zone_page_state(page, NR_WRITEBACK);
1711 } else
1712 end_page_writeback(page);
1713}
1714
1715static void nilfs_end_page_io(struct page *page, int err) 1627static void nilfs_end_page_io(struct page *page, int err)
1716{ 1628{
1717 if (!page) 1629 if (!page)
@@ -1738,40 +1650,19 @@ static void nilfs_end_page_io(struct page *page, int err)
1738 return; 1650 return;
1739 } 1651 }
1740 1652
1741 __nilfs_end_page_io(page, err); 1653 if (!err) {
1742} 1654 if (!nilfs_page_buffers_clean(page))
1743 1655 __set_page_dirty_nobuffers(page);
1744static void nilfs_clear_copied_buffers(struct list_head *list, int err) 1656 ClearPageError(page);
1745{ 1657 } else {
1746 struct buffer_head *bh, *head; 1658 __set_page_dirty_nobuffers(page);
1747 struct page *page; 1659 SetPageError(page);
1748
1749 while (!list_empty(list)) {
1750 bh = list_entry(list->next, struct buffer_head,
1751 b_assoc_buffers);
1752 page = bh->b_page;
1753 page_cache_get(page);
1754 head = bh = page_buffers(page);
1755 do {
1756 if (!list_empty(&bh->b_assoc_buffers)) {
1757 list_del_init(&bh->b_assoc_buffers);
1758 if (!err) {
1759 set_buffer_uptodate(bh);
1760 clear_buffer_dirty(bh);
1761 clear_buffer_delay(bh);
1762 clear_buffer_nilfs_volatile(bh);
1763 }
1764 brelse(bh); /* for b_assoc_buffers */
1765 }
1766 } while ((bh = bh->b_this_page) != head);
1767
1768 __nilfs_end_page_io(page, err);
1769 page_cache_release(page);
1770 } 1660 }
1661
1662 end_page_writeback(page);
1771} 1663}
1772 1664
1773static void nilfs_abort_logs(struct list_head *logs, struct page *failed_page, 1665static void nilfs_abort_logs(struct list_head *logs, int err)
1774 int err)
1775{ 1666{
1776 struct nilfs_segment_buffer *segbuf; 1667 struct nilfs_segment_buffer *segbuf;
1777 struct page *bd_page = NULL, *fs_page = NULL; 1668 struct page *bd_page = NULL, *fs_page = NULL;
@@ -1801,8 +1692,6 @@ static void nilfs_abort_logs(struct list_head *logs, struct page *failed_page,
1801 } 1692 }
1802 if (bh->b_page != fs_page) { 1693 if (bh->b_page != fs_page) {
1803 nilfs_end_page_io(fs_page, err); 1694 nilfs_end_page_io(fs_page, err);
1804 if (fs_page && fs_page == failed_page)
1805 return;
1806 fs_page = bh->b_page; 1695 fs_page = bh->b_page;
1807 } 1696 }
1808 } 1697 }
@@ -1821,12 +1710,11 @@ static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci,
1821 1710
1822 list_splice_tail_init(&sci->sc_write_logs, &logs); 1711 list_splice_tail_init(&sci->sc_write_logs, &logs);
1823 ret = nilfs_wait_on_logs(&logs); 1712 ret = nilfs_wait_on_logs(&logs);
1824 nilfs_abort_logs(&logs, NULL, ret ? : err); 1713 nilfs_abort_logs(&logs, ret ? : err);
1825 1714
1826 list_splice_tail_init(&sci->sc_segbufs, &logs); 1715 list_splice_tail_init(&sci->sc_segbufs, &logs);
1827 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); 1716 nilfs_cancel_segusage(&logs, nilfs->ns_sufile);
1828 nilfs_free_incomplete_logs(&logs, nilfs); 1717 nilfs_free_incomplete_logs(&logs, nilfs);
1829 nilfs_clear_copied_buffers(&sci->sc_copied_buffers, err);
1830 1718
1831 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { 1719 if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
1832 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, 1720 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile,
@@ -1920,8 +1808,6 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
1920 1808
1921 nilfs_end_page_io(fs_page, 0); 1809 nilfs_end_page_io(fs_page, 0);
1922 1810
1923 nilfs_clear_copied_buffers(&sci->sc_copied_buffers, 0);
1924
1925 nilfs_drop_collected_inodes(&sci->sc_dirty_files); 1811 nilfs_drop_collected_inodes(&sci->sc_dirty_files);
1926 1812
1927 if (nilfs_doing_gc()) 1813 if (nilfs_doing_gc())
@@ -1979,7 +1865,7 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
1979 "failed to get inode block.\n"); 1865 "failed to get inode block.\n");
1980 return err; 1866 return err;
1981 } 1867 }
1982 nilfs_mdt_mark_buffer_dirty(ibh); 1868 mark_buffer_dirty(ibh);
1983 nilfs_mdt_mark_dirty(ifile); 1869 nilfs_mdt_mark_dirty(ifile);
1984 spin_lock(&nilfs->ns_inode_lock); 1870 spin_lock(&nilfs->ns_inode_lock);
1985 if (likely(!ii->i_bh)) 1871 if (likely(!ii->i_bh))
@@ -1991,8 +1877,7 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
1991 1877
1992 clear_bit(NILFS_I_QUEUED, &ii->i_state); 1878 clear_bit(NILFS_I_QUEUED, &ii->i_state);
1993 set_bit(NILFS_I_BUSY, &ii->i_state); 1879 set_bit(NILFS_I_BUSY, &ii->i_state);
1994 list_del(&ii->i_dirty); 1880 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files);
1995 list_add_tail(&ii->i_dirty, &sci->sc_dirty_files);
1996 } 1881 }
1997 spin_unlock(&nilfs->ns_inode_lock); 1882 spin_unlock(&nilfs->ns_inode_lock);
1998 1883
@@ -2014,8 +1899,7 @@ static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
2014 clear_bit(NILFS_I_BUSY, &ii->i_state); 1899 clear_bit(NILFS_I_BUSY, &ii->i_state);
2015 brelse(ii->i_bh); 1900 brelse(ii->i_bh);
2016 ii->i_bh = NULL; 1901 ii->i_bh = NULL;
2017 list_del(&ii->i_dirty); 1902 list_move_tail(&ii->i_dirty, &ti->ti_garbage);
2018 list_add_tail(&ii->i_dirty, &ti->ti_garbage);
2019 } 1903 }
2020 spin_unlock(&nilfs->ns_inode_lock); 1904 spin_unlock(&nilfs->ns_inode_lock);
2021} 1905}
@@ -2026,7 +1910,6 @@ static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
2026static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) 1910static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
2027{ 1911{
2028 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; 1912 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
2029 struct page *failed_page;
2030 int err; 1913 int err;
2031 1914
2032 sci->sc_stage.scnt = NILFS_ST_INIT; 1915 sci->sc_stage.scnt = NILFS_ST_INIT;
@@ -2081,11 +1964,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
2081 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); 1964 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile);
2082 1965
2083 /* Write partial segments */ 1966 /* Write partial segments */
2084 err = nilfs_segctor_prepare_write(sci, &failed_page); 1967 nilfs_segctor_prepare_write(sci);
2085 if (err) {
2086 nilfs_abort_logs(&sci->sc_segbufs, failed_page, err);
2087 goto failed_to_write;
2088 }
2089 1968
2090 nilfs_add_checksums_on_logs(&sci->sc_segbufs, 1969 nilfs_add_checksums_on_logs(&sci->sc_segbufs,
2091 nilfs->ns_crc_seed); 1970 nilfs->ns_crc_seed);
@@ -2687,7 +2566,6 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
2687 INIT_LIST_HEAD(&sci->sc_segbufs); 2566 INIT_LIST_HEAD(&sci->sc_segbufs);
2688 INIT_LIST_HEAD(&sci->sc_write_logs); 2567 INIT_LIST_HEAD(&sci->sc_write_logs);
2689 INIT_LIST_HEAD(&sci->sc_gc_inodes); 2568 INIT_LIST_HEAD(&sci->sc_gc_inodes);
2690 INIT_LIST_HEAD(&sci->sc_copied_buffers);
2691 init_timer(&sci->sc_timer); 2569 init_timer(&sci->sc_timer);
2692 2570
2693 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; 2571 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT;
@@ -2741,8 +2619,6 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
2741 if (flag || !nilfs_segctor_confirm(sci)) 2619 if (flag || !nilfs_segctor_confirm(sci))
2742 nilfs_segctor_write_out(sci); 2620 nilfs_segctor_write_out(sci);
2743 2621
2744 WARN_ON(!list_empty(&sci->sc_copied_buffers));
2745
2746 if (!list_empty(&sci->sc_dirty_files)) { 2622 if (!list_empty(&sci->sc_dirty_files)) {
2747 nilfs_warning(sci->sc_super, __func__, 2623 nilfs_warning(sci->sc_super, __func__,
2748 "dirty file(s) after the final construction\n"); 2624 "dirty file(s) after the final construction\n");
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index 6c02a86745fb..38a1d0013314 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -92,7 +92,6 @@ struct nilfs_segsum_pointer {
92 * @sc_nblk_inc: Block count of current generation 92 * @sc_nblk_inc: Block count of current generation
93 * @sc_dirty_files: List of files to be written 93 * @sc_dirty_files: List of files to be written
94 * @sc_gc_inodes: List of GC inodes having blocks to be written 94 * @sc_gc_inodes: List of GC inodes having blocks to be written
95 * @sc_copied_buffers: List of copied buffers (buffer heads) to freeze data
96 * @sc_freesegs: array of segment numbers to be freed 95 * @sc_freesegs: array of segment numbers to be freed
97 * @sc_nfreesegs: number of segments on @sc_freesegs 96 * @sc_nfreesegs: number of segments on @sc_freesegs
98 * @sc_dsync_inode: inode whose data pages are written for a sync operation 97 * @sc_dsync_inode: inode whose data pages are written for a sync operation
@@ -136,7 +135,6 @@ struct nilfs_sc_info {
136 135
137 struct list_head sc_dirty_files; 136 struct list_head sc_dirty_files;
138 struct list_head sc_gc_inodes; 137 struct list_head sc_gc_inodes;
139 struct list_head sc_copied_buffers;
140 138
141 __u64 *sc_freesegs; 139 __u64 *sc_freesegs;
142 size_t sc_nfreesegs; 140 size_t sc_nfreesegs;
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index 1d6f488ccae8..0a0aba617d8a 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -33,7 +33,9 @@
33 33
34struct nilfs_sufile_info { 34struct nilfs_sufile_info {
35 struct nilfs_mdt_info mi; 35 struct nilfs_mdt_info mi;
36 unsigned long ncleansegs; 36 unsigned long ncleansegs;/* number of clean segments */
37 __u64 allocmin; /* lower limit of allocatable segment range */
38 __u64 allocmax; /* upper limit of allocatable segment range */
37}; 39};
38 40
39static inline struct nilfs_sufile_info *NILFS_SUI(struct inode *sufile) 41static inline struct nilfs_sufile_info *NILFS_SUI(struct inode *sufile)
@@ -96,6 +98,13 @@ nilfs_sufile_get_segment_usage_block(struct inode *sufile, __u64 segnum,
96 create, NULL, bhp); 98 create, NULL, bhp);
97} 99}
98 100
101static int nilfs_sufile_delete_segment_usage_block(struct inode *sufile,
102 __u64 segnum)
103{
104 return nilfs_mdt_delete_block(sufile,
105 nilfs_sufile_get_blkoff(sufile, segnum));
106}
107
99static void nilfs_sufile_mod_counter(struct buffer_head *header_bh, 108static void nilfs_sufile_mod_counter(struct buffer_head *header_bh,
100 u64 ncleanadd, u64 ndirtyadd) 109 u64 ncleanadd, u64 ndirtyadd)
101{ 110{
@@ -108,7 +117,7 @@ static void nilfs_sufile_mod_counter(struct buffer_head *header_bh,
108 le64_add_cpu(&header->sh_ndirtysegs, ndirtyadd); 117 le64_add_cpu(&header->sh_ndirtysegs, ndirtyadd);
109 kunmap_atomic(kaddr, KM_USER0); 118 kunmap_atomic(kaddr, KM_USER0);
110 119
111 nilfs_mdt_mark_buffer_dirty(header_bh); 120 mark_buffer_dirty(header_bh);
112} 121}
113 122
114/** 123/**
@@ -248,6 +257,35 @@ int nilfs_sufile_update(struct inode *sufile, __u64 segnum, int create,
248} 257}
249 258
250/** 259/**
260 * nilfs_sufile_set_alloc_range - limit range of segment to be allocated
261 * @sufile: inode of segment usage file
262 * @start: minimum segment number of allocatable region (inclusive)
263 * @end: maximum segment number of allocatable region (inclusive)
264 *
265 * Return Value: On success, 0 is returned. On error, one of the
266 * following negative error codes is returned.
267 *
268 * %-ERANGE - invalid segment region
269 */
270int nilfs_sufile_set_alloc_range(struct inode *sufile, __u64 start, __u64 end)
271{
272 struct nilfs_sufile_info *sui = NILFS_SUI(sufile);
273 __u64 nsegs;
274 int ret = -ERANGE;
275
276 down_write(&NILFS_MDT(sufile)->mi_sem);
277 nsegs = nilfs_sufile_get_nsegments(sufile);
278
279 if (start <= end && end < nsegs) {
280 sui->allocmin = start;
281 sui->allocmax = end;
282 ret = 0;
283 }
284 up_write(&NILFS_MDT(sufile)->mi_sem);
285 return ret;
286}
287
288/**
251 * nilfs_sufile_alloc - allocate a segment 289 * nilfs_sufile_alloc - allocate a segment
252 * @sufile: inode of segment usage file 290 * @sufile: inode of segment usage file
253 * @segnump: pointer to segment number 291 * @segnump: pointer to segment number
@@ -269,11 +307,12 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
269 struct buffer_head *header_bh, *su_bh; 307 struct buffer_head *header_bh, *su_bh;
270 struct nilfs_sufile_header *header; 308 struct nilfs_sufile_header *header;
271 struct nilfs_segment_usage *su; 309 struct nilfs_segment_usage *su;
310 struct nilfs_sufile_info *sui = NILFS_SUI(sufile);
272 size_t susz = NILFS_MDT(sufile)->mi_entry_size; 311 size_t susz = NILFS_MDT(sufile)->mi_entry_size;
273 __u64 segnum, maxsegnum, last_alloc; 312 __u64 segnum, maxsegnum, last_alloc;
274 void *kaddr; 313 void *kaddr;
275 unsigned long nsegments, ncleansegs, nsus; 314 unsigned long nsegments, ncleansegs, nsus, cnt;
276 int ret, i, j; 315 int ret, j;
277 316
278 down_write(&NILFS_MDT(sufile)->mi_sem); 317 down_write(&NILFS_MDT(sufile)->mi_sem);
279 318
@@ -287,13 +326,31 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
287 kunmap_atomic(kaddr, KM_USER0); 326 kunmap_atomic(kaddr, KM_USER0);
288 327
289 nsegments = nilfs_sufile_get_nsegments(sufile); 328 nsegments = nilfs_sufile_get_nsegments(sufile);
329 maxsegnum = sui->allocmax;
290 segnum = last_alloc + 1; 330 segnum = last_alloc + 1;
291 maxsegnum = nsegments - 1; 331 if (segnum < sui->allocmin || segnum > sui->allocmax)
292 for (i = 0; i < nsegments; i += nsus) { 332 segnum = sui->allocmin;
293 if (segnum >= nsegments) { 333
294 /* wrap around */ 334 for (cnt = 0; cnt < nsegments; cnt += nsus) {
295 segnum = 0; 335 if (segnum > maxsegnum) {
296 maxsegnum = last_alloc; 336 if (cnt < sui->allocmax - sui->allocmin + 1) {
337 /*
338 * wrap around in the limited region.
339 * if allocation started from
340 * sui->allocmin, this never happens.
341 */
342 segnum = sui->allocmin;
343 maxsegnum = last_alloc;
344 } else if (segnum > sui->allocmin &&
345 sui->allocmax + 1 < nsegments) {
346 segnum = sui->allocmax + 1;
347 maxsegnum = nsegments - 1;
348 } else if (sui->allocmin > 0) {
349 segnum = 0;
350 maxsegnum = sui->allocmin - 1;
351 } else {
352 break; /* never happens */
353 }
297 } 354 }
298 ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 1, 355 ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 1,
299 &su_bh); 356 &su_bh);
@@ -319,9 +376,9 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
319 header->sh_last_alloc = cpu_to_le64(segnum); 376 header->sh_last_alloc = cpu_to_le64(segnum);
320 kunmap_atomic(kaddr, KM_USER0); 377 kunmap_atomic(kaddr, KM_USER0);
321 378
322 NILFS_SUI(sufile)->ncleansegs--; 379 sui->ncleansegs--;
323 nilfs_mdt_mark_buffer_dirty(header_bh); 380 mark_buffer_dirty(header_bh);
324 nilfs_mdt_mark_buffer_dirty(su_bh); 381 mark_buffer_dirty(su_bh);
325 nilfs_mdt_mark_dirty(sufile); 382 nilfs_mdt_mark_dirty(sufile);
326 brelse(su_bh); 383 brelse(su_bh);
327 *segnump = segnum; 384 *segnump = segnum;
@@ -364,7 +421,7 @@ void nilfs_sufile_do_cancel_free(struct inode *sufile, __u64 segnum,
364 nilfs_sufile_mod_counter(header_bh, -1, 1); 421 nilfs_sufile_mod_counter(header_bh, -1, 1);
365 NILFS_SUI(sufile)->ncleansegs--; 422 NILFS_SUI(sufile)->ncleansegs--;
366 423
367 nilfs_mdt_mark_buffer_dirty(su_bh); 424 mark_buffer_dirty(su_bh);
368 nilfs_mdt_mark_dirty(sufile); 425 nilfs_mdt_mark_dirty(sufile);
369} 426}
370 427
@@ -395,7 +452,7 @@ void nilfs_sufile_do_scrap(struct inode *sufile, __u64 segnum,
395 nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1); 452 nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1);
396 NILFS_SUI(sufile)->ncleansegs -= clean; 453 NILFS_SUI(sufile)->ncleansegs -= clean;
397 454
398 nilfs_mdt_mark_buffer_dirty(su_bh); 455 mark_buffer_dirty(su_bh);
399 nilfs_mdt_mark_dirty(sufile); 456 nilfs_mdt_mark_dirty(sufile);
400} 457}
401 458
@@ -421,7 +478,7 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum,
421 sudirty = nilfs_segment_usage_dirty(su); 478 sudirty = nilfs_segment_usage_dirty(su);
422 nilfs_segment_usage_set_clean(su); 479 nilfs_segment_usage_set_clean(su);
423 kunmap_atomic(kaddr, KM_USER0); 480 kunmap_atomic(kaddr, KM_USER0);
424 nilfs_mdt_mark_buffer_dirty(su_bh); 481 mark_buffer_dirty(su_bh);
425 482
426 nilfs_sufile_mod_counter(header_bh, 1, sudirty ? (u64)-1 : 0); 483 nilfs_sufile_mod_counter(header_bh, 1, sudirty ? (u64)-1 : 0);
427 NILFS_SUI(sufile)->ncleansegs++; 484 NILFS_SUI(sufile)->ncleansegs++;
@@ -441,7 +498,7 @@ int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum)
441 498
442 ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh); 499 ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh);
443 if (!ret) { 500 if (!ret) {
444 nilfs_mdt_mark_buffer_dirty(bh); 501 mark_buffer_dirty(bh);
445 nilfs_mdt_mark_dirty(sufile); 502 nilfs_mdt_mark_dirty(sufile);
446 brelse(bh); 503 brelse(bh);
447 } 504 }
@@ -476,7 +533,7 @@ int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum,
476 su->su_nblocks = cpu_to_le32(nblocks); 533 su->su_nblocks = cpu_to_le32(nblocks);
477 kunmap_atomic(kaddr, KM_USER0); 534 kunmap_atomic(kaddr, KM_USER0);
478 535
479 nilfs_mdt_mark_buffer_dirty(bh); 536 mark_buffer_dirty(bh);
480 nilfs_mdt_mark_dirty(sufile); 537 nilfs_mdt_mark_dirty(sufile);
481 brelse(bh); 538 brelse(bh);
482 539
@@ -505,7 +562,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat)
505{ 562{
506 struct buffer_head *header_bh; 563 struct buffer_head *header_bh;
507 struct nilfs_sufile_header *header; 564 struct nilfs_sufile_header *header;
508 struct the_nilfs *nilfs = NILFS_I_NILFS(sufile); 565 struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
509 void *kaddr; 566 void *kaddr;
510 int ret; 567 int ret;
511 568
@@ -555,11 +612,183 @@ void nilfs_sufile_do_set_error(struct inode *sufile, __u64 segnum,
555 nilfs_sufile_mod_counter(header_bh, -1, 0); 612 nilfs_sufile_mod_counter(header_bh, -1, 0);
556 NILFS_SUI(sufile)->ncleansegs--; 613 NILFS_SUI(sufile)->ncleansegs--;
557 } 614 }
558 nilfs_mdt_mark_buffer_dirty(su_bh); 615 mark_buffer_dirty(su_bh);
559 nilfs_mdt_mark_dirty(sufile); 616 nilfs_mdt_mark_dirty(sufile);
560} 617}
561 618
562/** 619/**
620 * nilfs_sufile_truncate_range - truncate range of segment array
621 * @sufile: inode of segment usage file
622 * @start: start segment number (inclusive)
623 * @end: end segment number (inclusive)
624 *
625 * Return Value: On success, 0 is returned. On error, one of the
626 * following negative error codes is returned.
627 *
628 * %-EIO - I/O error.
629 *
630 * %-ENOMEM - Insufficient amount of memory available.
631 *
632 * %-EINVAL - Invalid number of segments specified
633 *
634 * %-EBUSY - Dirty or active segments are present in the range
635 */
636static int nilfs_sufile_truncate_range(struct inode *sufile,
637 __u64 start, __u64 end)
638{
639 struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
640 struct buffer_head *header_bh;
641 struct buffer_head *su_bh;
642 struct nilfs_segment_usage *su, *su2;
643 size_t susz = NILFS_MDT(sufile)->mi_entry_size;
644 unsigned long segusages_per_block;
645 unsigned long nsegs, ncleaned;
646 __u64 segnum;
647 void *kaddr;
648 ssize_t n, nc;
649 int ret;
650 int j;
651
652 nsegs = nilfs_sufile_get_nsegments(sufile);
653
654 ret = -EINVAL;
655 if (start > end || start >= nsegs)
656 goto out;
657
658 ret = nilfs_sufile_get_header_block(sufile, &header_bh);
659 if (ret < 0)
660 goto out;
661
662 segusages_per_block = nilfs_sufile_segment_usages_per_block(sufile);
663 ncleaned = 0;
664
665 for (segnum = start; segnum <= end; segnum += n) {
666 n = min_t(unsigned long,
667 segusages_per_block -
668 nilfs_sufile_get_offset(sufile, segnum),
669 end - segnum + 1);
670 ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0,
671 &su_bh);
672 if (ret < 0) {
673 if (ret != -ENOENT)
674 goto out_header;
675 /* hole */
676 continue;
677 }
678 kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
679 su = nilfs_sufile_block_get_segment_usage(
680 sufile, segnum, su_bh, kaddr);
681 su2 = su;
682 for (j = 0; j < n; j++, su = (void *)su + susz) {
683 if ((le32_to_cpu(su->su_flags) &
684 ~(1UL << NILFS_SEGMENT_USAGE_ERROR)) ||
685 nilfs_segment_is_active(nilfs, segnum + j)) {
686 ret = -EBUSY;
687 kunmap_atomic(kaddr, KM_USER0);
688 brelse(su_bh);
689 goto out_header;
690 }
691 }
692 nc = 0;
693 for (su = su2, j = 0; j < n; j++, su = (void *)su + susz) {
694 if (nilfs_segment_usage_error(su)) {
695 nilfs_segment_usage_set_clean(su);
696 nc++;
697 }
698 }
699 kunmap_atomic(kaddr, KM_USER0);
700 if (nc > 0) {
701 mark_buffer_dirty(su_bh);
702 ncleaned += nc;
703 }
704 brelse(su_bh);
705
706 if (n == segusages_per_block) {
707 /* make hole */
708 nilfs_sufile_delete_segment_usage_block(sufile, segnum);
709 }
710 }
711 ret = 0;
712
713out_header:
714 if (ncleaned > 0) {
715 NILFS_SUI(sufile)->ncleansegs += ncleaned;
716 nilfs_sufile_mod_counter(header_bh, ncleaned, 0);
717 nilfs_mdt_mark_dirty(sufile);
718 }
719 brelse(header_bh);
720out:
721 return ret;
722}
723
724/**
725 * nilfs_sufile_resize - resize segment array
726 * @sufile: inode of segment usage file
727 * @newnsegs: new number of segments
728 *
729 * Return Value: On success, 0 is returned. On error, one of the
730 * following negative error codes is returned.
731 *
732 * %-EIO - I/O error.
733 *
734 * %-ENOMEM - Insufficient amount of memory available.
735 *
736 * %-ENOSPC - Enough free space is not left for shrinking
737 *
738 * %-EBUSY - Dirty or active segments exist in the region to be truncated
739 */
740int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs)
741{
742 struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
743 struct buffer_head *header_bh;
744 struct nilfs_sufile_header *header;
745 struct nilfs_sufile_info *sui = NILFS_SUI(sufile);
746 void *kaddr;
747 unsigned long nsegs, nrsvsegs;
748 int ret = 0;
749
750 down_write(&NILFS_MDT(sufile)->mi_sem);
751
752 nsegs = nilfs_sufile_get_nsegments(sufile);
753 if (nsegs == newnsegs)
754 goto out;
755
756 ret = -ENOSPC;
757 nrsvsegs = nilfs_nrsvsegs(nilfs, newnsegs);
758 if (newnsegs < nsegs && nsegs - newnsegs + nrsvsegs > sui->ncleansegs)
759 goto out;
760
761 ret = nilfs_sufile_get_header_block(sufile, &header_bh);
762 if (ret < 0)
763 goto out;
764
765 if (newnsegs > nsegs) {
766 sui->ncleansegs += newnsegs - nsegs;
767 } else /* newnsegs < nsegs */ {
768 ret = nilfs_sufile_truncate_range(sufile, newnsegs, nsegs - 1);
769 if (ret < 0)
770 goto out_header;
771
772 sui->ncleansegs -= nsegs - newnsegs;
773 }
774
775 kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
776 header = kaddr + bh_offset(header_bh);
777 header->sh_ncleansegs = cpu_to_le64(sui->ncleansegs);
778 kunmap_atomic(kaddr, KM_USER0);
779
780 mark_buffer_dirty(header_bh);
781 nilfs_mdt_mark_dirty(sufile);
782 nilfs_set_nsegments(nilfs, newnsegs);
783
784out_header:
785 brelse(header_bh);
786out:
787 up_write(&NILFS_MDT(sufile)->mi_sem);
788 return ret;
789}
790
791/**
563 * nilfs_sufile_get_suinfo - 792 * nilfs_sufile_get_suinfo -
564 * @sufile: inode of segment usage file 793 * @sufile: inode of segment usage file
565 * @segnum: segment number to start looking 794 * @segnum: segment number to start looking
@@ -583,7 +812,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf,
583 struct nilfs_segment_usage *su; 812 struct nilfs_segment_usage *su;
584 struct nilfs_suinfo *si = buf; 813 struct nilfs_suinfo *si = buf;
585 size_t susz = NILFS_MDT(sufile)->mi_entry_size; 814 size_t susz = NILFS_MDT(sufile)->mi_entry_size;
586 struct the_nilfs *nilfs = NILFS_I_NILFS(sufile); 815 struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
587 void *kaddr; 816 void *kaddr;
588 unsigned long nsegs, segusages_per_block; 817 unsigned long nsegs, segusages_per_block;
589 ssize_t n; 818 ssize_t n;
@@ -679,6 +908,9 @@ int nilfs_sufile_read(struct super_block *sb, size_t susize,
679 kunmap_atomic(kaddr, KM_USER0); 908 kunmap_atomic(kaddr, KM_USER0);
680 brelse(header_bh); 909 brelse(header_bh);
681 910
911 sui->allocmax = nilfs_sufile_get_nsegments(sufile) - 1;
912 sui->allocmin = 0;
913
682 unlock_new_inode(sufile); 914 unlock_new_inode(sufile);
683 out: 915 out:
684 *inodep = sufile; 916 *inodep = sufile;
diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h
index a943fbacb45b..e84bc5b51fc1 100644
--- a/fs/nilfs2/sufile.h
+++ b/fs/nilfs2/sufile.h
@@ -31,11 +31,12 @@
31 31
32static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) 32static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile)
33{ 33{
34 return NILFS_I_NILFS(sufile)->ns_nsegments; 34 return ((struct the_nilfs *)sufile->i_sb->s_fs_info)->ns_nsegments;
35} 35}
36 36
37unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); 37unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile);
38 38
39int nilfs_sufile_set_alloc_range(struct inode *sufile, __u64 start, __u64 end);
39int nilfs_sufile_alloc(struct inode *, __u64 *); 40int nilfs_sufile_alloc(struct inode *, __u64 *);
40int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum); 41int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum);
41int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, 42int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum,
@@ -61,6 +62,7 @@ void nilfs_sufile_do_cancel_free(struct inode *, __u64, struct buffer_head *,
61void nilfs_sufile_do_set_error(struct inode *, __u64, struct buffer_head *, 62void nilfs_sufile_do_set_error(struct inode *, __u64, struct buffer_head *,
62 struct buffer_head *); 63 struct buffer_head *);
63 64
65int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs);
64int nilfs_sufile_read(struct super_block *sb, size_t susize, 66int nilfs_sufile_read(struct super_block *sb, size_t susize,
65 struct nilfs_inode *raw_inode, struct inode **inodep); 67 struct nilfs_inode *raw_inode, struct inode **inodep);
66 68
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 062cca065195..8351c44a7320 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -56,6 +56,7 @@
56#include "btnode.h" 56#include "btnode.h"
57#include "page.h" 57#include "page.h"
58#include "cpfile.h" 58#include "cpfile.h"
59#include "sufile.h" /* nilfs_sufile_resize(), nilfs_sufile_set_alloc_range() */
59#include "ifile.h" 60#include "ifile.h"
60#include "dat.h" 61#include "dat.h"
61#include "segment.h" 62#include "segment.h"
@@ -165,7 +166,7 @@ struct inode *nilfs_alloc_inode(struct super_block *sb)
165 ii->i_state = 0; 166 ii->i_state = 0;
166 ii->i_cno = 0; 167 ii->i_cno = 0;
167 ii->vfs_inode.i_version = 1; 168 ii->vfs_inode.i_version = 1;
168 nilfs_btnode_cache_init(&ii->i_btnode_cache, sb->s_bdi); 169 nilfs_mapping_init(&ii->i_btnode_cache, &ii->vfs_inode, sb->s_bdi);
169 return &ii->vfs_inode; 170 return &ii->vfs_inode;
170} 171}
171 172
@@ -347,6 +348,134 @@ int nilfs_cleanup_super(struct super_block *sb)
347 return ret; 348 return ret;
348} 349}
349 350
351/**
352 * nilfs_move_2nd_super - relocate secondary super block
353 * @sb: super block instance
354 * @sb2off: new offset of the secondary super block (in bytes)
355 */
356static int nilfs_move_2nd_super(struct super_block *sb, loff_t sb2off)
357{
358 struct the_nilfs *nilfs = sb->s_fs_info;
359 struct buffer_head *nsbh;
360 struct nilfs_super_block *nsbp;
361 sector_t blocknr, newblocknr;
362 unsigned long offset;
363 int sb2i = -1; /* array index of the secondary superblock */
364 int ret = 0;
365
366 /* nilfs->ns_sem must be locked by the caller. */
367 if (nilfs->ns_sbh[1] &&
368 nilfs->ns_sbh[1]->b_blocknr > nilfs->ns_first_data_block) {
369 sb2i = 1;
370 blocknr = nilfs->ns_sbh[1]->b_blocknr;
371 } else if (nilfs->ns_sbh[0]->b_blocknr > nilfs->ns_first_data_block) {
372 sb2i = 0;
373 blocknr = nilfs->ns_sbh[0]->b_blocknr;
374 }
375 if (sb2i >= 0 && (u64)blocknr << nilfs->ns_blocksize_bits == sb2off)
376 goto out; /* super block location is unchanged */
377
378 /* Get new super block buffer */
379 newblocknr = sb2off >> nilfs->ns_blocksize_bits;
380 offset = sb2off & (nilfs->ns_blocksize - 1);
381 nsbh = sb_getblk(sb, newblocknr);
382 if (!nsbh) {
383 printk(KERN_WARNING
384 "NILFS warning: unable to move secondary superblock "
385 "to block %llu\n", (unsigned long long)newblocknr);
386 ret = -EIO;
387 goto out;
388 }
389 nsbp = (void *)nsbh->b_data + offset;
390 memset(nsbp, 0, nilfs->ns_blocksize);
391
392 if (sb2i >= 0) {
393 memcpy(nsbp, nilfs->ns_sbp[sb2i], nilfs->ns_sbsize);
394 brelse(nilfs->ns_sbh[sb2i]);
395 nilfs->ns_sbh[sb2i] = nsbh;
396 nilfs->ns_sbp[sb2i] = nsbp;
397 } else if (nilfs->ns_sbh[0]->b_blocknr < nilfs->ns_first_data_block) {
398 /* secondary super block will be restored to index 1 */
399 nilfs->ns_sbh[1] = nsbh;
400 nilfs->ns_sbp[1] = nsbp;
401 } else {
402 brelse(nsbh);
403 }
404out:
405 return ret;
406}
407
408/**
409 * nilfs_resize_fs - resize the filesystem
410 * @sb: super block instance
411 * @newsize: new size of the filesystem (in bytes)
412 */
413int nilfs_resize_fs(struct super_block *sb, __u64 newsize)
414{
415 struct the_nilfs *nilfs = sb->s_fs_info;
416 struct nilfs_super_block **sbp;
417 __u64 devsize, newnsegs;
418 loff_t sb2off;
419 int ret;
420
421 ret = -ERANGE;
422 devsize = i_size_read(sb->s_bdev->bd_inode);
423 if (newsize > devsize)
424 goto out;
425
426 /*
427 * Write lock is required to protect some functions depending
428 * on the number of segments, the number of reserved segments,
429 * and so forth.
430 */
431 down_write(&nilfs->ns_segctor_sem);
432
433 sb2off = NILFS_SB2_OFFSET_BYTES(newsize);
434 newnsegs = sb2off >> nilfs->ns_blocksize_bits;
435 do_div(newnsegs, nilfs->ns_blocks_per_segment);
436
437 ret = nilfs_sufile_resize(nilfs->ns_sufile, newnsegs);
438 up_write(&nilfs->ns_segctor_sem);
439 if (ret < 0)
440 goto out;
441
442 ret = nilfs_construct_segment(sb);
443 if (ret < 0)
444 goto out;
445
446 down_write(&nilfs->ns_sem);
447 nilfs_move_2nd_super(sb, sb2off);
448 ret = -EIO;
449 sbp = nilfs_prepare_super(sb, 0);
450 if (likely(sbp)) {
451 nilfs_set_log_cursor(sbp[0], nilfs);
452 /*
453 * Drop NILFS_RESIZE_FS flag for compatibility with
454 * mount-time resize which may be implemented in a
455 * future release.
456 */
457 sbp[0]->s_state = cpu_to_le16(le16_to_cpu(sbp[0]->s_state) &
458 ~NILFS_RESIZE_FS);
459 sbp[0]->s_dev_size = cpu_to_le64(newsize);
460 sbp[0]->s_nsegments = cpu_to_le64(nilfs->ns_nsegments);
461 if (sbp[1])
462 memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
463 ret = nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL);
464 }
465 up_write(&nilfs->ns_sem);
466
467 /*
468 * Reset the range of allocatable segments last. This order
469 * is important in the case of expansion because the secondary
470 * superblock must be protected from log write until migration
471 * completes.
472 */
473 if (!ret)
474 nilfs_sufile_set_alloc_range(nilfs->ns_sufile, 0, newnsegs - 1);
475out:
476 return ret;
477}
478
350static void nilfs_put_super(struct super_block *sb) 479static void nilfs_put_super(struct super_block *sb)
351{ 480{
352 struct the_nilfs *nilfs = sb->s_fs_info; 481 struct the_nilfs *nilfs = sb->s_fs_info;
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index d2acd1a651f3..d32714094375 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -363,6 +363,24 @@ static unsigned long long nilfs_max_size(unsigned int blkbits)
363 return res; 363 return res;
364} 364}
365 365
366/**
367 * nilfs_nrsvsegs - calculate the number of reserved segments
368 * @nilfs: nilfs object
369 * @nsegs: total number of segments
370 */
371unsigned long nilfs_nrsvsegs(struct the_nilfs *nilfs, unsigned long nsegs)
372{
373 return max_t(unsigned long, NILFS_MIN_NRSVSEGS,
374 DIV_ROUND_UP(nsegs * nilfs->ns_r_segments_percentage,
375 100));
376}
377
378void nilfs_set_nsegments(struct the_nilfs *nilfs, unsigned long nsegs)
379{
380 nilfs->ns_nsegments = nsegs;
381 nilfs->ns_nrsvsegs = nilfs_nrsvsegs(nilfs, nsegs);
382}
383
366static int nilfs_store_disk_layout(struct the_nilfs *nilfs, 384static int nilfs_store_disk_layout(struct the_nilfs *nilfs,
367 struct nilfs_super_block *sbp) 385 struct nilfs_super_block *sbp)
368{ 386{
@@ -389,13 +407,9 @@ static int nilfs_store_disk_layout(struct the_nilfs *nilfs,
389 } 407 }
390 408
391 nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block); 409 nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block);
392 nilfs->ns_nsegments = le64_to_cpu(sbp->s_nsegments);
393 nilfs->ns_r_segments_percentage = 410 nilfs->ns_r_segments_percentage =
394 le32_to_cpu(sbp->s_r_segments_percentage); 411 le32_to_cpu(sbp->s_r_segments_percentage);
395 nilfs->ns_nrsvsegs = 412 nilfs_set_nsegments(nilfs, le64_to_cpu(sbp->s_nsegments));
396 max_t(unsigned long, NILFS_MIN_NRSVSEGS,
397 DIV_ROUND_UP(nilfs->ns_nsegments *
398 nilfs->ns_r_segments_percentage, 100));
399 nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed); 413 nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed);
400 return 0; 414 return 0;
401} 415}
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index f4968145c2a3..9992b11312ff 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -268,6 +268,8 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev);
268void destroy_nilfs(struct the_nilfs *nilfs); 268void destroy_nilfs(struct the_nilfs *nilfs);
269int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data); 269int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data);
270int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb); 270int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb);
271unsigned long nilfs_nrsvsegs(struct the_nilfs *nilfs, unsigned long nsegs);
272void nilfs_set_nsegments(struct the_nilfs *nilfs, unsigned long nsegs);
271int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t); 273int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t);
272int nilfs_count_free_blocks(struct the_nilfs *, sector_t *); 274int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
273struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno); 275struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno);
diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 8768c469e93e..7454ad7451b4 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -107,7 +107,7 @@ struct nilfs_super_root {
107#define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) 107#define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0)
108#define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) 108#define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1)
109#define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) 109#define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2)
110#define NILFS_SR_BYTES (sizeof(struct nilfs_super_root)) 110#define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3)
111 111
112/* 112/*
113 * Maximal mount counts 113 * Maximal mount counts
@@ -845,5 +845,7 @@ struct nilfs_bdesc {
845 _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64) 845 _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64)
846#define NILFS_IOCTL_RESIZE \ 846#define NILFS_IOCTL_RESIZE \
847 _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64) 847 _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64)
848#define NILFS_IOCTL_SET_ALLOC_RANGE \
849 _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2])
848 850
849#endif /* _LINUX_NILFS_FS_H */ 851#endif /* _LINUX_NILFS_FS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-19 21:06:14 -0400