diff options
| author | Nathan Scott <nscott@aconex.com> | 2007-05-14 18:24:02 +1000 |
|---|---|---|
| committer | Tim Shimmin <tes@chook.melbourne.sgi.com> | 2007-07-14 15:21:29 +1000 |
| commit | 4cc929ee305c69573cb842aade059dbe2a93940c (patch) | |
| tree | bf6cee68d7ca81296864576f27e68900e122d04f /fs/xfs/xfs_rtalloc.c | |
| parent | 1fa40b01ae4d1b00e366d4949edcc230f5cd6d99 (diff) | |
[XFS] Don't grow filesystems past the size they can index.
When growing a filesystem we don't check to see if the new size overflows
the page cache index range, so we can do silly things like grow a
filesystem page 16TB on a 32bit. Check new filesystem sizes against the
limits the kernel can support.
SGI-PV: 957886
SGI-Modid: xfs-linux-melb:xfs-kern:28563a
Signed-Off-By: Nathan Scott <nscott@aconex.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index b3a5f07bd07..47082c01872 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -1882,11 +1882,13 @@ xfs_growfs_rt( (nrblocks = in->newblocks) <= sbp->sb_rblocks || (sbp->sb_rblocks && (in->extsize != sbp->sb_rextsize))) return XFS_ERROR(EINVAL); + if ((error = xfs_sb_validate_fsb_count(sbp, nrblocks))) + return error; /* * Read in the last block of the device, make sure it exists. */ error = xfs_read_buf(mp, mp->m_rtdev_targp, - XFS_FSB_TO_BB(mp, in->newblocks - 1), + XFS_FSB_TO_BB(mp, nrblocks - 1), XFS_FSB_TO_BB(mp, 1), 0, &bp); if (error) return error; |