The patch titled
md: notify userspace on 'write-pending' changes to array_state
has been removed from the -mm tree. Its filename was
md-notify-userspace-on-write-pending-changes-to-array_state.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: md: notify userspace on 'write-pending' changes to array_state
From: NeilBrown <neilb@xxxxxxx>
When an array enters write pending, 'array_state' changes, so we must be
sure to sysfs_notify.
Also, when waiting for user-space to acknowledge 'write-pending' by
marking the metadata as dirty, we don't want to wait for MD_CHANGE_DEVS to
be cleared as that might not happen. So explicity test for the bits that
we are really interested in.
Signed-off-by: Neil Brown <neilb@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/md/md.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff -puN drivers/md/md.c~md-notify-userspace-on-write-pending-changes-to-array_state drivers/md/md.c
--- a/drivers/md/md.c~md-notify-userspace-on-write-pending-changes-to-array_state
+++ a/drivers/md/md.c
@@ -5435,8 +5435,11 @@ void md_write_start(mddev_t *mddev, stru
md_wakeup_thread(mddev->thread);
}
spin_unlock_irq(&mddev->write_lock);
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
}
- wait_event(mddev->sb_wait, mddev->flags==0);
+ wait_event(mddev->sb_wait,
+ !test_bit(MD_CHANGE_CLEAN, &mddev->flags) &&
+ !test_bit(MD_CHANGE_PENDING, &mddev->flags));
}
void md_write_end(mddev_t *mddev)
@@ -5471,6 +5474,12 @@ void md_allow_write(mddev_t *mddev)
mddev->safemode = 1;
spin_unlock_irq(&mddev->write_lock);
md_update_sb(mddev, 0);
+
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
+ /* wait for the dirty state to be recorded in the metadata */
+ wait_event(mddev->sb_wait,
+ !test_bit(MD_CHANGE_CLEAN, &mddev->flags) &&
+ !test_bit(MD_CHANGE_PENDING, &mddev->flags));
} else
spin_unlock_irq(&mddev->write_lock);
}
_
Patches currently in -mm which might be from neilb@xxxxxxx are
md-fix-prexor-vs-sync_request-race.patch
md-fix-uninitialized-use-of-mddev-recovery_wait.patch
md-do-not-compute-parity-unless-it-is-on-a-failed-drive.patch
linux-next.patch
fix-soft-lock-up-at-nfs-mount-by-per-sb-lru-list-of-unused-dentries.patch
fix-soft-lock-up-at-nfs-mount-by-per-sb-lru-list-of-unused-dentries-fix.patch
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