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Diffstat (limited to 'fs/gfs2/glock.c')
-rw-r--r--fs/gfs2/glock.c43
1 files changed, 38 insertions, 5 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index f041a89e1ab..8b674b1f3a5 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -63,6 +63,7 @@ static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int
static DECLARE_RWSEM(gfs2_umount_flush_sem);
static struct dentry *gfs2_root;
static struct workqueue_struct *glock_workqueue;
+struct workqueue_struct *gfs2_delete_workqueue;
static LIST_HEAD(lru_list);
static atomic_t lru_count = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(lru_lock);
@@ -167,7 +168,7 @@ static void glock_free(struct gfs2_glock *gl)
*
*/
-static void gfs2_glock_hold(struct gfs2_glock *gl)
+void gfs2_glock_hold(struct gfs2_glock *gl)
{
GLOCK_BUG_ON(gl, atomic_read(&gl->gl_ref) == 0);
atomic_inc(&gl->gl_ref);
@@ -222,7 +223,7 @@ static void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
* to the glock, in addition to the one it is dropping.
*/
-static void gfs2_glock_put_nolock(struct gfs2_glock *gl)
+void gfs2_glock_put_nolock(struct gfs2_glock *gl)
{
if (atomic_dec_and_test(&gl->gl_ref))
GLOCK_BUG_ON(gl, 1);
@@ -679,6 +680,29 @@ out_unlock:
goto out;
}
+static void delete_work_func(struct work_struct *work)
+{
+ struct gfs2_glock *gl = container_of(work, struct gfs2_glock, gl_delete);
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ struct gfs2_inode *ip = NULL;
+ struct inode *inode;
+ u64 no_addr = 0;
+
+ spin_lock(&gl->gl_spin);
+ ip = (struct gfs2_inode *)gl->gl_object;
+ if (ip)
+ no_addr = ip->i_no_addr;
+ spin_unlock(&gl->gl_spin);
+ if (ip) {
+ inode = gfs2_ilookup(sdp->sd_vfs, no_addr);
+ if (inode) {
+ d_prune_aliases(inode);
+ iput(inode);
+ }
+ }
+ gfs2_glock_put(gl);
+}
+
static void glock_work_func(struct work_struct *work)
{
unsigned long delay = 0;
@@ -757,6 +781,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
gl->gl_sbd = sdp;
gl->gl_aspace = NULL;
INIT_DELAYED_WORK(&gl->gl_work, glock_work_func);
+ INIT_WORK(&gl->gl_delete, delete_work_func);
/* If this glock protects actual on-disk data or metadata blocks,
create a VFS inode to manage the pages/buffers holding them. */
@@ -898,6 +923,8 @@ static void handle_callback(struct gfs2_glock *gl, unsigned int state,
gl->gl_demote_state != state) {
gl->gl_demote_state = LM_ST_UNLOCKED;
}
+ if (gl->gl_ops->go_callback)
+ gl->gl_ops->go_callback(gl);
trace_gfs2_demote_rq(gl);
}
@@ -1344,14 +1371,14 @@ static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
spin_unlock(&lru_lock);
spin_lock(&gl->gl_spin);
may_demote = demote_ok(gl);
- spin_unlock(&gl->gl_spin);
- clear_bit(GLF_LOCK, &gl->gl_flags);
if (may_demote) {
handle_callback(gl, LM_ST_UNLOCKED, 0);
nr--;
}
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
- gfs2_glock_put(gl);
+ gfs2_glock_put_nolock(gl);
+ spin_unlock(&gl->gl_spin);
+ clear_bit(GLF_LOCK, &gl->gl_flags);
spin_lock(&lru_lock);
continue;
}
@@ -1738,6 +1765,11 @@ int __init gfs2_glock_init(void)
glock_workqueue = create_workqueue("glock_workqueue");
if (IS_ERR(glock_workqueue))
return PTR_ERR(glock_workqueue);
+ gfs2_delete_workqueue = create_workqueue("delete_workqueue");
+ if (IS_ERR(gfs2_delete_workqueue)) {
+ destroy_workqueue(glock_workqueue);
+ return PTR_ERR(gfs2_delete_workqueue);
+ }
register_shrinker(&glock_shrinker);
@@ -1748,6 +1780,7 @@ void gfs2_glock_exit(void)
{
unregister_shrinker(&glock_shrinker);
destroy_workqueue(glock_workqueue);
+ destroy_workqueue(gfs2_delete_workqueue);
}
static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi)