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jfs: fix diAllocExt error in resizing filesystem 

Resizing the filesystem would result in an diAllocExt error in some
instances because changes in bmp->db_agsize would not get noticed if
goto extendBmap was called.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: jfs-discussion@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org
This commit is contained in:
Bill Pemberton 2010-04-16 08:01:20 -05:00 committed by Dave Kleikamp
parent d7eecb483c
commit 2b0b39517d
1 changed files with 5 additions and 1 deletions
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6
fs/jfs/resize.c
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@ -81,6 +81,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
struct inode *iplist[1];
struct jfs_superblock *j_sb, *j_sb2;
uint old_agsize;
int agsizechanged = 0;
struct buffer_head *bh, *bh2;
/* If the volume hasn't grown, get out now */
@ -333,6 +334,9 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
*/
if ((rc = dbExtendFS(ipbmap, XAddress, nblocks)))
goto error_out;
agsizechanged |= (bmp->db_agsize != old_agsize);
/*
* the map now has extended to cover additional nblocks:
* dn_mapsize = oldMapsize + nblocks;
@ -432,7 +436,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
* will correctly identify the new ag);
*/
/* if new AG size the same as old AG size, done! */
if (bmp->db_agsize != old_agsize) {
if (agsizechanged) {
if ((rc = diExtendFS(ipimap, ipbmap)))
goto error_out;