diff options
Diffstat (limited to 'fs/sysfs/file.c')
-rw-r--r-- | fs/sysfs/file.c | 31 |
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 | ||
456 | void 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 | } | ||
470 | EXPORT_SYMBOL_GPL(sysfs_notify_dirent); | ||
471 | |||
456 | void sysfs_notify(struct kobject *k, char *dir, char *attr) | 472 | void 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 | } |