From: David Chinner <dgc@sgi.com>
Date: Fri, 2 Sep 2005 06:40:47 +0000 (+1000)
Subject: [XFS] Prevent the incore superblock sb_fdblocks count from leaking when we
X-Git-Tag: v2.6.14-rc1~526^2~29
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3bdbfb104e53b367892cc9510e6722346dfb656b;p=linux-2.6

[XFS] Prevent the incore superblock sb_fdblocks count from leaking when we
are getting ENOSPC errors on writes. When we fail to allocate space for
indirect blocks in xfs_bmapi() make sure we release the direct block
allocation before returning.

SGI-PV: 938502
SGI-Modid: xfs-linux:xfs-kern:22986a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
---

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 6f5d283888..3e76def128 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -4754,10 +4754,20 @@ xfs_bmapi(
 					error = xfs_mod_incore_sb(mp,
 							XFS_SBS_FDBLOCKS,
 							-(alen), rsvd);
-				if (!error)
+				if (!error) {
 					error = xfs_mod_incore_sb(mp,
 							XFS_SBS_FDBLOCKS,
 							-(indlen), rsvd);
+					if (error && rt) {
+						xfs_mod_incore_sb(ip->i_mount,
+							XFS_SBS_FREXTENTS,
+							extsz, rsvd);
+					} else if (error) {
+						xfs_mod_incore_sb(ip->i_mount,
+							XFS_SBS_FDBLOCKS,
+							alen, rsvd);
+					}
+				}
 
 				if (error) {
 					if (XFS_IS_QUOTA_ON(ip->i_mount))