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md: delay notification of 'active_idle' to the recovery thread 

sysfs_notify might sleep, so do not call it from md_safemode_timeout.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-07-23 13:09:48 -07:00
parent 2339788376
commit d8e64406a0
2 changed files with 5 additions and 1 deletions
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5
drivers/md/md.c
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@ -3483,7 +3483,7 @@ static void md_safemode_timeout(unsigned long data)
if (!atomic_read(&mddev->writes_pending)) {
mddev->safemode = 1;
if (mddev->external)
sysfs_notify(&mddev->kobj, NULL, "array_state");
set_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags);
}
md_wakeup_thread(mddev->thread);
}
@ -6051,6 +6051,9 @@ void md_check_recovery(mddev_t *mddev)
if (mddev->bitmap)
bitmap_daemon_work(mddev->bitmap);
if (test_and_clear_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags))
sysfs_notify(&mddev->kobj, NULL, "array_state");
if (mddev->ro)
return;

1
include/linux/raid/md_k.h
View File

@ -128,6 +128,7 @@ struct mddev_s
#define MD_CHANGE_DEVS 0 /* Some device status has changed */
#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */
#define MD_CHANGE_PENDING 2 /* superblock update in progress */
#define MD_NOTIFY_ARRAY_STATE 3 /* atomic context wants to notify userspace */
int ro;