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[XFS] Fix realtime subvolume expansion, a porting bug b0rked it. Coverity 

made me look at this code (bug id #344). We only return with
XFS_ERROR(EINVAL) if mp->m_rtdev_targp is valid and pass it otherwise to
xfs_read_buf() where some function calls later it gets dereferenced by an
assert.

SGI-PV: 954266
SGI-Modid: xfs-linux-melb:xfs-kern:26363a

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Eric Sesterhenn 2006-06-28 08:42:26 +10:00 committed by Nathan Scott
parent 97dfd70c89
commit 73024cf115
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/xfs_rtalloc.c
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@ -1929,7 +1929,7 @@ xfs_growfs_rt(
/*
* Initial error checking.
*/
if (mp->m_rtdev_targp || mp->m_rbmip == NULL ||
if (mp->m_rtdev_targp == NULL || mp->m_rbmip == NULL ||
(nrblocks = in->newblocks) <= sbp->sb_rblocks ||
(sbp->sb_rblocks && (in->extsize != sbp->sb_rextsize)))
return XFS_ERROR(EINVAL);