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Diffstat (limited to 'fs/sysfs/file.c')
-rw-r--r--fs/sysfs/file.c31
1 files changed, 18 insertions, 13 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index ce8339c70a4b..d0d79e6b6d11 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -453,6 +453,22 @@ static unsigned int sysfs_poll(struct file *filp, poll_table *wait)
453 return POLLERR|POLLPRI; 453 return POLLERR|POLLPRI;
454} 454}
455 455
456void sysfs_notify_dirent(struct sysfs_dirent *sd)
457{
458 struct sysfs_open_dirent *od;
459
460 spin_lock(&sysfs_open_dirent_lock);
461
462 od = sd->s_attr.open;
463 if (od) {
464 atomic_inc(&od->event);
465 wake_up_interruptible(&od->poll);
466 }
467
468 spin_unlock(&sysfs_open_dirent_lock);
469}
470EXPORT_SYMBOL_GPL(sysfs_notify_dirent);
471
456void sysfs_notify(struct kobject *k, char *dir, char *attr) 472void sysfs_notify(struct kobject *k, char *dir, char *attr)
457{ 473{
458 struct sysfs_dirent *sd = k->sd; 474 struct sysfs_dirent *sd = k->sd;
@@ -463,19 +479,8 @@ void sysfs_notify(struct kobject *k, char *dir, char *attr)
463 sd = sysfs_find_dirent(sd, dir); 479 sd = sysfs_find_dirent(sd, dir);
464 if (sd && attr) 480 if (sd && attr)
465 sd = sysfs_find_dirent(sd, attr); 481 sd = sysfs_find_dirent(sd, attr);
466 if (sd) { 482 if (sd)
467 struct sysfs_open_dirent *od; 483 sysfs_notify_dirent(sd);
468
469 spin_lock(&sysfs_open_dirent_lock);
470
471 od = sd->s_attr.open;
472 if (od) {
473 atomic_inc(&od->event);
474 wake_up_interruptible(&od->poll);
475 }
476
477 spin_unlock(&sysfs_open_dirent_lock);
478 }
479 484
480 mutex_unlock(&sysfs_mutex); 485 mutex_unlock(&sysfs_mutex);
481} 486}