ocfs2: Free block to the right block group.

In case the block we are going to free is allocated from
a discontiguous block group, we have to use suballoc_loc
to be the right group.

Signed-off-by: Tao Ma <tao.ma@oracle.com>

6 files changed, 28 insertions, 10 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 479d2ecae34..af2d1bd00d0 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -6203,6 +6203,7 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb)
  */
 struct ocfs2_cached_block_free {
         struct ocfs2_cached_block_free          *free_next;
+        u64                                     free_bg;
         u64                                     free_blk;
         unsigned int                            free_bit;
 };
@@ -6249,8 +6250,11 @@ static int ocfs2_free_cached_blocks(struct ocfs2_super *osb,
         }
 
         while (head) {
-                bg_blkno = ocfs2_which_suballoc_group(head->free_blk,
-                                                      head->free_bit);
+                if (head->free_bg)
+                        bg_blkno = head->free_bg;
+                else
+                        bg_blkno = ocfs2_which_suballoc_group(head->free_blk,
+                                                              head->free_bit);
                 mlog(0, "Free bit: (bit %u, blkno %llu)\n",
                      head->free_bit, (unsigned long long)head->free_blk);
 
@@ -6298,7 +6302,7 @@ int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
         int ret = 0;
         struct ocfs2_cached_block_free *item;
 
-        item = kmalloc(sizeof(*item), GFP_NOFS);
+        item = kzalloc(sizeof(*item), GFP_NOFS);
         if (item == NULL) {
                 ret = -ENOMEM;
                 mlog_errno(ret);
@@ -6438,8 +6442,8 @@ ocfs2_find_per_slot_free_list(int type,
 }
 
 int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
-                              int type, int slot, u64 blkno,
-                              unsigned int bit)
+                              int type, int slot, u64 suballoc,
+                              u64 blkno, unsigned int bit)
 {
         int ret;
         struct ocfs2_per_slot_free_list *fl;
@@ -6452,7 +6456,7 @@ int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
                 goto out;
         }
 
-        item = kmalloc(sizeof(*item), GFP_NOFS);
+        item = kzalloc(sizeof(*item), GFP_NOFS);
         if (item == NULL) {
                 ret = -ENOMEM;
                 mlog_errno(ret);
@@ -6462,6 +6466,7 @@ int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
         mlog(0, "Insert: (type %d, slot %u, bit %u, blk %llu)\n",
              type, slot, bit, (unsigned long long)blkno);
 
+        item->free_bg = suballoc;
         item->free_blk = blkno;
         item->free_bit = bit;
         item->free_next = fl->f_first;
@@ -6478,6 +6483,7 @@ static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt,
 {
         return ocfs2_cache_block_dealloc(ctxt, EXTENT_ALLOC_SYSTEM_INODE,
                                          le16_to_cpu(eb->h_suballoc_slot),
+                                         le64_to_cpu(eb->h_suballoc_loc),
                                          le64_to_cpu(eb->h_blkno),
                                          le16_to_cpu(eb->h_suballoc_bit));
 }
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 1db4359ccb9..fc28d64398c 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -209,7 +209,7 @@ static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
 int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
                                 u64 blkno, unsigned int bit);
 int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
-                              int type, int slot, u64 blkno,
+                              int type, int slot, u64 suballoc, u64 blkno,
                               unsigned int bit);
 static inline int ocfs2_dealloc_has_cluster(struct ocfs2_cached_dealloc_ctxt *c)
 {
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 341bb8f811e..3fea52d0efd 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -4466,7 +4466,10 @@ static int ocfs2_dx_dir_remove_index(struct inode *dir,
 
         blk = le64_to_cpu(dx_root->dr_blkno);
         bit = le16_to_cpu(dx_root->dr_suballoc_bit);
-        bg_blkno = ocfs2_which_suballoc_group(blk, bit);
+        if (dx_root->dr_suballoc_loc)
+                bg_blkno = le64_to_cpu(dx_root->dr_suballoc_loc);
+        else
+                bg_blkno = ocfs2_which_suballoc_group(blk, bit);
         ret = ocfs2_free_suballoc_bits(handle, dx_alloc_inode, dx_alloc_bh,
                                        bit, bg_blkno, 1);
         if (ret)
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 275920e8a40..b3470298422 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -792,7 +792,10 @@ int ocfs2_remove_refcount_tree(struct inode *inode, struct buffer_head *di_bh)
         if (le32_to_cpu(rb->rf_count) == 1) {
                 blk = le64_to_cpu(rb->rf_blkno);
                 bit = le16_to_cpu(rb->rf_suballoc_bit);
-                bg_blkno = ocfs2_which_suballoc_group(blk, bit);
+                if (rb->rf_suballoc_loc)
+                        bg_blkno = le64_to_cpu(rb->rf_suballoc_loc);
+                else
+                        bg_blkno = ocfs2_which_suballoc_group(blk, bit);
 
                 alloc_inode = ocfs2_get_system_file_inode(osb,
                                         EXTENT_ALLOC_SYSTEM_INODE,
@@ -2108,6 +2111,7 @@ static int ocfs2_remove_refcount_extent(handle_t *handle,
          */
         ret = ocfs2_cache_block_dealloc(dealloc, EXTENT_ALLOC_SYSTEM_INODE,
                                         le16_to_cpu(rb->rf_suballoc_slot),
+                                        le64_to_cpu(rb->rf_suballoc_loc),
                                         le64_to_cpu(rb->rf_blkno),
                                         le16_to_cpu(rb->rf_suballoc_bit));
         if (ret) {
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 6f39da4a9a1..0c08353fdda 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -2349,6 +2349,8 @@ int ocfs2_free_dinode(handle_t *handle,
         u16 bit = le16_to_cpu(di->i_suballoc_bit);
         u64 bg_blkno = ocfs2_which_suballoc_group(blk, bit);
 
+        if (di->i_suballoc_loc)
+                bg_blkno = le64_to_cpu(di->i_suballoc_loc);
         return ocfs2_free_suballoc_bits(handle, inode_alloc_inode,
                                         inode_alloc_bh, bit, bg_blkno, 1);
 }
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 805167e226c..a1cf195935c 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2466,7 +2466,10 @@ static int ocfs2_xattr_free_block(struct inode *inode,
         xb = (struct ocfs2_xattr_block *)blk_bh->b_data;
         blk = le64_to_cpu(xb->xb_blkno);
         bit = le16_to_cpu(xb->xb_suballoc_bit);
-        bg_blkno = ocfs2_which_suballoc_group(blk, bit);
+        if (xb->xb_suballoc_loc)
+                bg_blkno = le64_to_cpu(xb->xb_suballoc_loc);
+        else
+                bg_blkno = ocfs2_which_suballoc_group(blk, bit);
 
         xb_alloc_inode = ocfs2_get_system_file_inode(osb,
                                 EXTENT_ALLOC_SYSTEM_INODE,