aboutsummaryrefslogtreecommitdiffstats
path: root/fs/gfs2/lock_dlm.c
diff options
context:
space:
mode:
authorSteven Whitehouse <swhiteho@redhat.com>2010-01-25 11:20:19 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2010-02-03 09:47:04 +0000
commite402746a945ceb9d0486a8e3d5917c9228fa4404 (patch)
treec2e6c4d619c1cf35e97b16a9849517871c15d97b /fs/gfs2/lock_dlm.c
parent1a45dcfe2525e9432cb4aba461d4994fc2befe42 (diff)
GFS2: Wait for unlock completion on umount
This patch adds a wait on umount between the point at which we dispose of all glocks and the point at which we unmount the lock protocol. This ensures that we've received all the replies to our unlock requests before we stop the locking. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Reported-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Diffstat (limited to 'fs/gfs2/lock_dlm.c')
-rw-r--r--fs/gfs2/lock_dlm.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 46df988323b..cdd0755d782 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -21,6 +21,7 @@ static void gdlm_ast(void *arg)
{
struct gfs2_glock *gl = arg;
unsigned ret = gl->gl_state;
+ struct gfs2_sbd *sdp = gl->gl_sbd;
BUG_ON(gl->gl_lksb.sb_flags & DLM_SBF_DEMOTED);
@@ -30,6 +31,8 @@ static void gdlm_ast(void *arg)
switch (gl->gl_lksb.sb_status) {
case -DLM_EUNLOCK: /* Unlocked, so glock can be freed */
kmem_cache_free(gfs2_glock_cachep, gl);
+ if (atomic_dec_and_test(&sdp->sd_glock_disposal))
+ wake_up(&sdp->sd_glock_wait);
return;
case -DLM_ECANCEL: /* Cancel while getting lock */
ret |= LM_OUT_CANCELED;
@@ -167,7 +170,8 @@ static unsigned int gdlm_lock(struct gfs2_glock *gl,
static void gdlm_put_lock(struct kmem_cache *cachep, void *ptr)
{
struct gfs2_glock *gl = ptr;
- struct lm_lockstruct *ls = &gl->gl_sbd->sd_lockstruct;
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ struct lm_lockstruct *ls = &sdp->sd_lockstruct;
int error;
if (gl->gl_lksb.sb_lkid == 0) {
@@ -183,6 +187,7 @@ static void gdlm_put_lock(struct kmem_cache *cachep, void *ptr)
(unsigned long long)gl->gl_name.ln_number, error);
return;
}
+ atomic_inc(&sdp->sd_glock_disposal);
}
static void gdlm_cancel(struct gfs2_glock *gl)