[PATCH 043/102] xfs: add xlog_grant_head_wake_all

Dave Chinner
2012-08-23T05:03:32Z

From: Christoph Hellwig <hch@infradead.org>

Upstream commit: a79bf2d75b8f96bcdb6714138cd53cb3c358669c

Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
---
fs/xfs/xfs_log.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 6ef0264..eb19abf 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -159,6 +159,18 @@ xlog_grant_head_init(
spin_lock_init(&head->lock);
}

+STATIC void
+xlog_grant_head_wake_all(
+ struct xlog_grant_head *head)
+{
+ struct xlog_ticket *tic;
+
+ spin_lock(&head->lock);
+ list_for_each_entry(tic, &head->waiters, t_queue)
+ wake_up_process(tic->t_task);
+ spin_unlock(&head->lock);
+}
+
STATIC bool
xlog_reserveq_wake(
struct log *log,
@@ -3608,7 +3620,6 @@ xfs_log_force_umount(
struct xfs_mount *mp,
int logerror)
{
- xlog_ticket_t *tic;
xlog_t *log;
int retval;

@@ -3676,15 +3687,8 @@ xfs_log_force_umount(
* we don't enqueue anything once the SHUTDOWN flag is set, and this
* action is protected by the grant locks.
*/
- spin_lock(&log->l_reserve_head.lock);
- list_for_each_entry(tic, &log->l_reserve_head.waiters, t_queue)
- wake_up_process(tic->t_task);
- spin_unlock(&log->l_reserve_head.lock);
-
- spin_lock(&log->l_write_head.lock);
- list_for_each_entry(tic, &log->l_write_head.waiters, t_queue)
- wake_up_process(tic->t_task);
- spin_unlock(&log->l_write_head.lock);
+ xlog_grant_head_wake_all(&log->l_reserve_head);
+ xlog_grant_head_wake_all(&log->l_write_head);

if (!(log->l_iclog->ic_state & XLOG_STATE_IOERROR)) {
ASSERT(!logerror);