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xfs: remove log space waitqueues

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The tic->t_wait waitqueues can never have more than a single waiter
on them, so we can easily replace them with a task_struct pointer
and wake_up_process.

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>
This commit is contained in:
Christoph Hellwig
2012-02-20 02:31:24 +00:00
committed by Ben Myers
parent cfb7cdca0a
commit 14a7235fba
2 changed files with 18 additions and 12 deletions
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2
fs/xfs/xfs_log_priv.h
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@@ -239,8 +239,8 @@ typedef struct xlog_res {
} xlog_res_t;
typedef struct xlog_ticket {
wait_queue_head_t t_wait; /* ticket wait queue */
struct list_head t_queue; /* reserve/write queue */
struct task_struct *t_task; /* task that owns this ticket */
xlog_tid_t t_tid; /* transaction identifier : 4 */
atomic_t t_ref; /* ticket reference count : 4 */
int t_curr_res; /* current reservation in bytes : 4 */