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[GFS2] possible null pointer dereference fixup

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gfs2_alloc_get may fail so we have to check it to prevent
NULL pointer dereference.

Signed-off-by: Cyrill Gorcunov <gorcunov@gamil.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Cyrill Gorcunov
2008-03-03 21:54:21 +03:00
committed by Steven Whitehouse
parent 105284970b
commit 182fe5abd8
7 changed files with 44 additions and 8 deletions
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5
fs/gfs2/bmap.c
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@@ -900,6 +900,8 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
int error;
al = gfs2_alloc_get(ip);
if (!al)
return -ENOMEM;
error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
@@ -1081,7 +1083,8 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
find_metapath(sdp, lblock, &mp, ip->i_height);
gfs2_alloc_get(ip);
if (!gfs2_alloc_get(ip))
return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)