[PATCH] ufs2 write: block allocation update

Patch adds ability to work with 64bit metadata, this made by replacing work
with 32bit pointers by inline functions.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 117 insertions, 80 deletions

diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 638f4c585e89..0e97a4f79c31 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -4,6 +4,8 @@
  * Copyright (C) 1998
  * Daniel Pirkl <daniel.pirkl@email.cz>
  * Charles University, Faculty of Mathematics and Physics
+ *
+ * UFS2 write support Evgeniy Dushistov <dushistov@mail.ru>, 2007
  */
 
 #include <linux/fs.h>
@@ -21,38 +23,42 @@
 #include "swab.h"
 #include "util.h"
 
-static unsigned ufs_add_fragments (struct inode *, unsigned, unsigned, unsigned, int *);
-static unsigned ufs_alloc_fragments (struct inode *, unsigned, unsigned, unsigned, int *);
-static unsigned ufs_alloccg_block (struct inode *, struct ufs_cg_private_info *, unsigned, int *);
-static unsigned ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, unsigned, unsigned);
+#define INVBLOCK ((u64)-1L)
+
+static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned, int *);
+static u64 ufs_alloc_fragments(struct inode *, unsigned, u64, unsigned, int *);
+static u64 ufs_alloccg_block(struct inode *, struct ufs_cg_private_info *, u64, int *);
+static u64 ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, u64, unsigned);
 static unsigned char ufs_fragtable_8fpb[], ufs_fragtable_other[];
 static void ufs_clusteracct(struct super_block *, struct ufs_cg_private_info *, unsigned, int);
 
 /*
  * Free 'count' fragments from fragment number 'fragment'
  */
-void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
+void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
         struct ufs_cg_private_info * ucpi;
         struct ufs_cylinder_group * ucg;
-        unsigned cgno, bit, end_bit, bbase, blkmap, i, blkno, cylno;
+        unsigned cgno, bit, end_bit, bbase, blkmap, i;
+        u64 blkno;
         
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
         usb1 = ubh_get_usb_first(uspi);
         
-        UFSD("ENTER, fragment %u, count %u\n", fragment, count);
+        UFSD("ENTER, fragment %llu, count %u\n",
+             (unsigned long long)fragment, count);
         
         if (ufs_fragnum(fragment) + count > uspi->s_fpg)
                 ufs_error (sb, "ufs_free_fragments", "internal error");
         
         lock_super(sb);
         
-        cgno = ufs_dtog(fragment);
-        bit = ufs_dtogd(fragment);
+        cgno = ufs_dtog(uspi, fragment);
+        bit = ufs_dtogd(uspi, fragment);
         if (cgno >= uspi->s_ncg) {
                 ufs_panic (sb, "ufs_free_fragments", "freeing blocks are outside device");
                 goto failed;
@@ -101,9 +107,13 @@ void ufs_free_fragments(struct inode *inode, unsigned fragment, unsigned count)
                 fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
                 uspi->cs_total.cs_nbfree++;
                 fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
-                cylno = ufs_cbtocylno (bbase);
-                fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(bbase)), 1);
-                fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+                if (uspi->fs_magic != UFS2_MAGIC) {
+                        unsigned cylno = ufs_cbtocylno (bbase);
+
+                        fs16_add(sb, &ubh_cg_blks(ucpi, cylno,
+                                                  ufs_cbtorpos(bbase)), 1);
+                        fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+                }
         }
         
         ubh_mark_buffer_dirty (USPI_UBH(uspi));
@@ -127,24 +137,27 @@ failed:
 /*
  * Free 'count' fragments from fragment number 'fragment' (free whole blocks)
  */
-void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
+void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
         struct ufs_cg_private_info * ucpi;
         struct ufs_cylinder_group * ucg;
-        unsigned overflow, cgno, bit, end_bit, blkno, i, cylno;
+        unsigned overflow, cgno, bit, end_bit, i;
+        u64 blkno;
         
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
         usb1 = ubh_get_usb_first(uspi);
 
-        UFSD("ENTER, fragment %u, count %u\n", fragment, count);
+        UFSD("ENTER, fragment %llu, count %u\n",
+             (unsigned long long)fragment, count);
         
         if ((fragment & uspi->s_fpbmask) || (count & uspi->s_fpbmask)) {
                 ufs_error (sb, "ufs_free_blocks", "internal error, "
-                        "fragment %u, count %u\n", fragment, count);
+                           "fragment %llu, count %u\n",
+                           (unsigned long long)fragment, count);
                 goto failed;
         }
 
@@ -152,8 +165,8 @@ void ufs_free_blocks(struct inode *inode, unsigned fragment, unsigned count)
         
 do_more:
         overflow = 0;
-        cgno = ufs_dtog (fragment);
-        bit = ufs_dtogd (fragment);
+        cgno = ufs_dtog(uspi, fragment);
+        bit = ufs_dtogd(uspi, fragment);
         if (cgno >= uspi->s_ncg) {
                 ufs_panic (sb, "ufs_free_blocks", "freeing blocks are outside device");
                 goto failed_unlock;
@@ -187,9 +200,14 @@ do_more:
                 fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
                 uspi->cs_total.cs_nbfree++;
                 fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1);
-                cylno = ufs_cbtocylno(i);
-                fs16_add(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(i)), 1);
-                fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+
+                if (uspi->fs_magic != UFS2_MAGIC) {
+                        unsigned cylno = ufs_cbtocylno(i);
+
+                        fs16_add(sb, &ubh_cg_blks(ucpi, cylno,
+                                                  ufs_cbtorpos(i)), 1);
+                        fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+                }
         }
 
         ubh_mark_buffer_dirty (USPI_UBH(uspi));
@@ -308,15 +326,19 @@ static void ufs_clear_frags(struct inode *inode, sector_t beg, unsigned int n,
         }
 }
 
-unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
-                           unsigned goal, unsigned count, int * err, struct page *locked_page)
+u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
+                           u64 goal, unsigned count, int *err,
+                           struct page *locked_page)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
-        unsigned cgno, oldcount, newcount, tmp, request, result;
+        unsigned cgno, oldcount, newcount;
+        u64 tmp, request, result;
         
-        UFSD("ENTER, ino %lu, fragment %u, goal %u, count %u\n", inode->i_ino, fragment, goal, count);
+        UFSD("ENTER, ino %lu, fragment %llu, goal %llu, count %u\n",
+             inode->i_ino, (unsigned long long)fragment,
+             (unsigned long long)goal, count);
         
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
@@ -324,11 +346,12 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
         *err = -ENOSPC;
 
         lock_super (sb);
-        
-        tmp = fs32_to_cpu(sb, *p);
+        tmp = ufs_data_ptr_to_cpu(sb, p);
+
         if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
-                ufs_warning (sb, "ufs_new_fragments", "internal warning"
-                        " fragment %u, count %u", fragment, count);
+                ufs_warning(sb, "ufs_new_fragments", "internal warning"
+                            " fragment %llu, count %u",
+                            (unsigned long long)fragment, count);
                 count = uspi->s_fpb - ufs_fragnum(fragment); 
         }
         oldcount = ufs_fragnum (fragment);
@@ -339,10 +362,12 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
          */
         if (oldcount) {
                 if (!tmp) {
-                        ufs_error (sb, "ufs_new_fragments", "internal error, "
-                                "fragment %u, tmp %u\n", fragment, tmp);
-                        unlock_super (sb);
-                        return (unsigned)-1;
+                        ufs_error(sb, "ufs_new_fragments", "internal error, "
+                                  "fragment %llu, tmp %llu\n",
+                                  (unsigned long long)fragment,
+                                  (unsigned long long)tmp);
+                        unlock_super(sb);
+                        return INVBLOCK;
                 }
                 if (fragment < UFS_I(inode)->i_lastfrag) {
                         UFSD("EXIT (ALREADY ALLOCATED)\n");
@@ -372,7 +397,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
         if (goal == 0) 
                 cgno = ufs_inotocg (inode->i_ino);
         else
-                cgno = ufs_dtog (goal);
+                cgno = ufs_dtog(uspi, goal);
          
         /*
          * allocate new fragment
@@ -380,14 +405,16 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
         if (oldcount == 0) {
                 result = ufs_alloc_fragments (inode, cgno, goal, count, err);
                 if (result) {
-                        *p = cpu_to_fs32(sb, result);
+                        ufs_cpu_to_data_ptr(sb, p, result);
                         *err = 0;
-                        UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
-                        ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
-                                        locked_page != NULL);
+                        UFS_I(inode)->i_lastfrag =
+                                max_t(u32, UFS_I(inode)->i_lastfrag,
+                                      fragment + count);
+                        ufs_clear_frags(inode, result + oldcount,
+                                        newcount - oldcount, locked_page != NULL);
                 }
                 unlock_super(sb);
-                UFSD("EXIT, result %u\n", result);
+                UFSD("EXIT, result %llu\n", (unsigned long long)result);
                 return result;
         }
 
@@ -401,7 +428,7 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
                 ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
                                 locked_page != NULL);
                 unlock_super(sb);
-                UFSD("EXIT, result %u\n", result);
+                UFSD("EXIT, result %llu\n", (unsigned long long)result);
                 return result;
         }
 
@@ -433,15 +460,14 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
                                 locked_page != NULL);
                 ufs_change_blocknr(inode, fragment - oldcount, oldcount, tmp,
                                    result, locked_page);
-
-                *p = cpu_to_fs32(sb, result);
+                ufs_cpu_to_data_ptr(sb, p, result);
                 *err = 0;
                 UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
                 unlock_super(sb);
                 if (newcount < request)
                         ufs_free_fragments (inode, result + newcount, request - newcount);
                 ufs_free_fragments (inode, tmp, oldcount);
-                UFSD("EXIT, result %u\n", result);
+                UFSD("EXIT, result %llu\n", (unsigned long long)result);
                 return result;
         }
 
@@ -450,9 +476,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment,
         return 0;
 }               
 
-static unsigned
-ufs_add_fragments (struct inode * inode, unsigned fragment,
-                   unsigned oldcount, unsigned newcount, int * err)
+static u64 ufs_add_fragments(struct inode *inode, u64 fragment,
+                             unsigned oldcount, unsigned newcount, int *err)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
@@ -461,14 +486,15 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
         struct ufs_cylinder_group * ucg;
         unsigned cgno, fragno, fragoff, count, fragsize, i;
         
-        UFSD("ENTER, fragment %u, oldcount %u, newcount %u\n", fragment, oldcount, newcount);
+        UFSD("ENTER, fragment %llu, oldcount %u, newcount %u\n",
+             (unsigned long long)fragment, oldcount, newcount);
         
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
         usb1 = ubh_get_usb_first (uspi);
         count = newcount - oldcount;
         
-        cgno = ufs_dtog(fragment);
+        cgno = ufs_dtog(uspi, fragment);
         if (fs32_to_cpu(sb, UFS_SB(sb)->fs_cs(cgno).cs_nffree) < count)
                 return 0;
         if ((ufs_fragnum (fragment) + newcount) > uspi->s_fpb)
@@ -483,7 +509,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
                 return 0;
         }
 
-        fragno = ufs_dtogd (fragment);
+        fragno = ufs_dtogd(uspi, fragment);
         fragoff = ufs_fragnum (fragno);
         for (i = oldcount; i < newcount; i++)
                 if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i))
@@ -521,7 +547,7 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
         }
         sb->s_dirt = 1;
 
-        UFSD("EXIT, fragment %u\n", fragment);
+        UFSD("EXIT, fragment %llu\n", (unsigned long long)fragment);
         
         return fragment;
 }
@@ -534,17 +560,19 @@ ufs_add_fragments (struct inode * inode, unsigned fragment,
                 if (fs32_to_cpu(sb, ucg->cg_frsum[k])) \
                         goto cg_found; 
 
-static unsigned ufs_alloc_fragments (struct inode * inode, unsigned cgno,
-        unsigned goal, unsigned count, int * err)
+static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno,
+                               u64 goal, unsigned count, int *err)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
         struct ufs_cg_private_info * ucpi;
         struct ufs_cylinder_group * ucg;
-        unsigned oldcg, i, j, k, result, allocsize;
+        unsigned oldcg, i, j, k, allocsize;
+        u64 result;
         
-        UFSD("ENTER, ino %lu, cgno %u, goal %u, count %u\n", inode->i_ino, cgno, goal, count);
+        UFSD("ENTER, ino %lu, cgno %u, goal %llu, count %u\n",
+             inode->i_ino, cgno, (unsigned long long)goal, count);
 
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
@@ -593,7 +621,7 @@ cg_found:
 
         if (count == uspi->s_fpb) {
                 result = ufs_alloccg_block (inode, ucpi, goal, err);
-                if (result == (unsigned)-1)
+                if (result == INVBLOCK)
                         return 0;
                 goto succed;
         }
@@ -604,9 +632,9 @@ cg_found:
         
         if (allocsize == uspi->s_fpb) {
                 result = ufs_alloccg_block (inode, ucpi, goal, err);
-                if (result == (unsigned)-1)
+                if (result == INVBLOCK)
                         return 0;
-                goal = ufs_dtogd (result);
+                goal = ufs_dtogd(uspi, result);
                 for (i = count; i < uspi->s_fpb; i++)
                         ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
                 i = uspi->s_fpb - count;
@@ -620,7 +648,7 @@ cg_found:
         }
 
         result = ufs_bitmap_search (sb, ucpi, goal, allocsize);
-        if (result == (unsigned)-1)
+        if (result == INVBLOCK)
                 return 0;
         if(DQUOT_ALLOC_BLOCK(inode, count)) {
                 *err = -EDQUOT;
@@ -647,20 +675,21 @@ succed:
         sb->s_dirt = 1;
 
         result += cgno * uspi->s_fpg;
-        UFSD("EXIT3, result %u\n", result);
+        UFSD("EXIT3, result %llu\n", (unsigned long long)result);
         return result;
 }
 
-static unsigned ufs_alloccg_block (struct inode * inode,
-        struct ufs_cg_private_info * ucpi, unsigned goal, int * err)
+static u64 ufs_alloccg_block(struct inode *inode,
+                             struct ufs_cg_private_info *ucpi,
+                             u64 goal, int *err)
 {
         struct super_block * sb;
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
         struct ufs_cylinder_group * ucg;
-        unsigned result, cylno, blkno;
+        u64 result, blkno;
 
-        UFSD("ENTER, goal %u\n", goal);
+        UFSD("ENTER, goal %llu\n", (unsigned long long)goal);
 
         sb = inode->i_sb;
         uspi = UFS_SB(sb)->s_uspi;
@@ -672,7 +701,7 @@ static unsigned ufs_alloccg_block (struct inode * inode,
                 goto norot;
         }
         goal = ufs_blknum (goal);
-        goal = ufs_dtogd (goal);
+        goal = ufs_dtogd(uspi, goal);
         
         /*
          * If the requested block is available, use it.
@@ -684,8 +713,8 @@ static unsigned ufs_alloccg_block (struct inode * inode,
         
 norot:  
         result = ufs_bitmap_search (sb, ucpi, goal, uspi->s_fpb);
-        if (result == (unsigned)-1)
-                return (unsigned)-1;
+        if (result == INVBLOCK)
+                return INVBLOCK;
         ucpi->c_rotor = result;
 gotit:
         blkno = ufs_fragstoblks(result);
@@ -694,17 +723,22 @@ gotit:
                 ufs_clusteracct (sb, ucpi, blkno, -1);
         if(DQUOT_ALLOC_BLOCK(inode, uspi->s_fpb)) {
                 *err = -EDQUOT;
-                return (unsigned)-1;
+                return INVBLOCK;
         }
 
         fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
         uspi->cs_total.cs_nbfree--;
         fs32_sub(sb, &UFS_SB(sb)->fs_cs(ucpi->c_cgx).cs_nbfree, 1);
-        cylno = ufs_cbtocylno(result);
-        fs16_sub(sb, &ubh_cg_blks(ucpi, cylno, ufs_cbtorpos(result)), 1);
-        fs32_sub(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+
+        if (uspi->fs_magic != UFS2_MAGIC) {
+                unsigned cylno = ufs_cbtocylno((unsigned)result);
+
+                fs16_sub(sb, &ubh_cg_blks(ucpi, cylno,
+                                          ufs_cbtorpos((unsigned)result)), 1);
+                fs32_sub(sb, &ubh_cg_blktot(ucpi, cylno), 1);
+        }
         
-        UFSD("EXIT, result %u\n", result);
+        UFSD("EXIT, result %llu\n", (unsigned long long)result);
 
         return result;
 }
@@ -744,9 +778,9 @@ static unsigned ubh_scanc(struct ufs_sb_private_info *uspi,
  * @goal: near which block we want find new one
  * @count: specified size
  */
-static unsigned ufs_bitmap_search(struct super_block *sb,
-                                  struct ufs_cg_private_info *ucpi,
-                                  unsigned goal, unsigned count)
+static u64 ufs_bitmap_search(struct super_block *sb,
+                             struct ufs_cg_private_info *ucpi,
+                             u64 goal, unsigned count)
 {
         /*
          * Bit patterns for identifying fragments in the block map
@@ -761,16 +795,18 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
         struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
         struct ufs_super_block_first *usb1;
         struct ufs_cylinder_group *ucg;
-        unsigned start, length, loc, result;
+        unsigned start, length, loc;
         unsigned pos, want, blockmap, mask, end;
+        u64 result;
 
-        UFSD("ENTER, cg %u, goal %u, count %u\n", ucpi->c_cgx, goal, count);
+        UFSD("ENTER, cg %u, goal %llu, count %u\n", ucpi->c_cgx,
+             (unsigned long long)goal, count);
 
         usb1 = ubh_get_usb_first (uspi);
         ucg = ubh_get_ucg(UCPI_UBH(ucpi));
 
         if (goal)
-                start = ufs_dtogd(goal) >> 3;
+                start = ufs_dtogd(uspi, goal) >> 3;
         else
                 start = ucpi->c_frotor >> 3;
                 
@@ -790,7 +826,7 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
                                   " length %u, count %u, freeoff %u\n",
                                   ucpi->c_cgx, start, length, count,
                                   ucpi->c_freeoff);
-                        return (unsigned)-1;
+                        return INVBLOCK;
                 }
                 start = 0;
         }
@@ -808,7 +844,8 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
                 want = want_arr[count];
                 for (pos = 0; pos <= uspi->s_fpb - count; pos++) {
                         if ((blockmap & mask) == want) {
-                                UFSD("EXIT, result %u\n", result);
+                                UFSD("EXIT, result %llu\n",
+                                     (unsigned long long)result);
                                 return result + pos;
                         }
                         mask <<= 1;
@@ -819,7 +856,7 @@ static unsigned ufs_bitmap_search(struct super_block *sb,
         ufs_error(sb, "ufs_bitmap_search", "block not in map on cg %u\n",
                   ucpi->c_cgx);
         UFSD("EXIT (FAILED)\n");
-        return (unsigned)-1;
+        return INVBLOCK;
 }
 
 static void ufs_clusteracct(struct super_block * sb,