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GFS2: Don't cache iopen glocks 

This patch makes GFS2 immediately reclaim/delete all iopen glocks
as soon as they're dequeued. This allows deleters to get an
EXclusive lock on iopen so files are deleted properly instead of
being set as unlinked.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson 2013-05-29 11:51:52 -04:00 committed by Steven Whitehouse
parent e8830d8856
commit a6a4d98b01
2 changed files with 6 additions and 1 deletions
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1
fs/gfs2/inode.c
View File

@ -189,6 +189,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
return inode;
fail_refresh:
ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
ip->i_iopen_gh.gh_gl->gl_object = NULL;
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
fail_iopen:

6
fs/gfs2/super.c
View File

@ -1444,6 +1444,7 @@ static void gfs2_evict_inode(struct inode *inode)
/* Must not read inode block until block type has been verified */
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh);
if (unlikely(error)) {
ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
goto out;
}
@ -1514,8 +1515,10 @@ out_unlock:
if (gfs2_rs_active(ip->i_res))
gfs2_rs_deltree(ip->i_res);
if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags))
if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) {
ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
gfs2_glock_dq(&ip->i_iopen_gh);
}
gfs2_holder_uninit(&ip->i_iopen_gh);
gfs2_glock_dq_uninit(&gh);
if (error && error != GLR_TRYFAILED && error != -EROFS)
@ -1534,6 +1537,7 @@ out:
ip->i_gl = NULL;
if (ip->i_iopen_gh.gh_gl) {
ip->i_iopen_gh.gh_gl->gl_object = NULL;
ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
}
}