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[GFS2] Fix double locking problem in rename

Browse source 
The rename inode operation was trying to lock the same
inode twice in the case of renaming with the source
and destination directories the same. We now test for
this and just lock once.

Signed-off-by: Steven Whitehouse <[email protected]>
This commit is contained in:
Steven Whitehouse 2006-06-21 15:38:17 -04:00
commit d9d1ca3050
1 changed files with 11 additions and 5 deletions
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16
fs/gfs2/ops_inode.c
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@ -615,13 +615,19 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
goto out_gunlock_r;
}
num_gh = 1;
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
num_gh = 3;
if (odip != ndip) {
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
num_gh++;
}
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
num_gh++;
if (nip)
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
if (nip) {
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
num_gh++;
}
error = gfs2_glock_nq_m(num_gh, ghs);
if (error)