diff options
-rw-r--r-- | fs/gfs2/glock.c | 27 | ||||
-rw-r--r-- | fs/gfs2/glock.h | 2 | ||||
-rw-r--r-- | fs/gfs2/log.c | 2 | ||||
-rw-r--r-- | fs/gfs2/super.c | 4 |
4 files changed, 21 insertions, 14 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 34540f9d011c..ed90033b9c72 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -285,14 +285,6 @@ static void __gfs2_glock_put(struct gfs2_glock *gl) sdp->sd_lockstruct.ls_ops->lm_put_lock(gl); } -/* - * Cause the glock to be put in work queue context. - */ -void gfs2_glock_queue_put(struct gfs2_glock *gl) -{ - gfs2_glock_queue_work(gl, 0); -} - /** * gfs2_glock_put() - Decrement reference count on glock * @gl: The glock to put @@ -307,6 +299,22 @@ void gfs2_glock_put(struct gfs2_glock *gl) __gfs2_glock_put(gl); } +/* + * gfs2_glock_put_async - Decrement reference count without sleeping + * @gl: The glock to put + * + * Decrement the reference count on glock immediately unless it is the last + * reference. Defer putting the last reference to work queue context. + */ +void gfs2_glock_put_async(struct gfs2_glock *gl) +{ + if (lockref_put_or_lock(&gl->gl_lockref)) + return; + + __gfs2_glock_queue_work(gl, 0); + spin_unlock(&gl->gl_lockref.lock); +} + /** * may_grant - check if it's ok to grant a new lock * @gl: The glock @@ -2529,8 +2537,7 @@ static void gfs2_glock_iter_next(struct gfs2_glock_iter *gi, loff_t n) if (gl) { if (n == 0) return; - if (!lockref_put_not_zero(&gl->gl_lockref)) - gfs2_glock_queue_put(gl); + gfs2_glock_put_async(gl); } for (;;) { gl = rhashtable_walk_next(&gi->hti); diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 0114f3e0ebe0..2c697674a86f 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -172,7 +172,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, int create, struct gfs2_glock **glp); struct gfs2_glock *gfs2_glock_hold(struct gfs2_glock *gl); void gfs2_glock_put(struct gfs2_glock *gl); -void gfs2_glock_queue_put(struct gfs2_glock *gl); +void gfs2_glock_put_async(struct gfs2_glock *gl); void __gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, u16 flags, struct gfs2_holder *gh, diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index a6dd68b458ce..6ee6013fb825 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -786,7 +786,7 @@ void gfs2_glock_remove_revoke(struct gfs2_glock *gl) { if (atomic_dec_return(&gl->gl_revokes) == 0) { clear_bit(GLF_LFLUSH, &gl->gl_flags); - gfs2_glock_queue_put(gl); + gfs2_glock_put_async(gl); } } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 9de789b78bc5..d481db9510ac 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1049,7 +1049,7 @@ static int gfs2_drop_inode(struct inode *inode) gfs2_glock_hold(gl); if (!gfs2_queue_try_to_evict(gl)) - gfs2_glock_queue_put(gl); + gfs2_glock_put_async(gl); return 0; } @@ -1255,7 +1255,7 @@ out_qs: static void gfs2_glock_put_eventually(struct gfs2_glock *gl) { if (current->flags & PF_MEMALLOC) - gfs2_glock_queue_put(gl); + gfs2_glock_put_async(gl); else gfs2_glock_put(gl); } |