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| author | Dave Airlie <airlied@redhat.com> | 2010-09-24 15:37:33 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-09-24 15:37:33 +1000 |
| commit | 4a445f291ac3faa08f56eaeb6e44856b6b72b74c (patch) | |
| tree | b66cc93311dc4c623113a87aa9b40730a21ac18e /fs/xfs/xfs_vnodeops.c | |
| parent | cbc60ca04b342a4e1f2a1086a7277c077f07dbed (diff) | |
| parent | a850ea30374ebed32a0724742601861853fde869 (diff) | |
| download | kernel_goldelico_gta04-4a445f291ac3faa08f56eaeb6e44856b6b72b74c.zip kernel_goldelico_gta04-4a445f291ac3faa08f56eaeb6e44856b6b72b74c.tar.gz kernel_goldelico_gta04-4a445f291ac3faa08f56eaeb6e44856b6b72b74c.tar.bz2 | |
Merge remote branch 'origin/master' of /home/airlied/kernel//linux-2.6 into drm-core-next
Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 66d585c..4c7c7bf 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -2299,15 +2299,22 @@ xfs_alloc_file_space( e = allocatesize_fsb; } + /* + * The transaction reservation is limited to a 32-bit block + * count, hence we need to limit the number of blocks we are + * trying to reserve to avoid an overflow. We can't allocate + * more than @nimaps extents, and an extent is limited on disk + * to MAXEXTLEN (21 bits), so use that to enforce the limit. + */ + resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps)); if (unlikely(rt)) { - resrtextents = qblocks = (uint)(e - s); + resrtextents = qblocks = resblks; resrtextents /= mp->m_sb.sb_rextsize; resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); quota_flag = XFS_QMOPT_RES_RTBLKS; } else { resrtextents = 0; - resblks = qblocks = \ - XFS_DIOSTRAT_SPACE_RES(mp, (uint)(e - s)); + resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks); quota_flag = XFS_QMOPT_RES_REGBLKS; } |