The patch titled
Subject: wait: add wait_event_lock_irq() interface
has been added to the -mm tree. Its filename is
wait-add-wait_event_lock_irq-interface-v3.patch
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------------------------------------------------------
From: Lukas Czerner <lczerner@xxxxxxxxxx>
Subject: wait: add wait_event_lock_irq() interface
v3: swap cmd and schedule so we call cmd before schedule
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Cc: Neil Brown <neilb@xxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/wait.h | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff -puN include/linux/wait.h~wait-add-wait_event_lock_irq-interface-v3 include/linux/wait.h
--- a/include/linux/wait.h~wait-add-wait_event_lock_irq-interface-v3
+++ a/include/linux/wait.h
@@ -555,14 +555,13 @@ do { \
do { \
DEFINE_WAIT(__wait); \
\
- cmd; \
for (;;) { \
prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); \
if (condition) \
break; \
spin_unlock_irq(&lock); \
- schedule(); \
cmd; \
+ schedule(); \
spin_lock_irq(&lock); \
} \
finish_wait(&wq, &__wait); \
@@ -575,8 +574,8 @@ do { \
* taken.
* @wq: the waitqueue to wait on
* @condition: a C expression for the event to wait for
- * @lock: a locked spinlock_t, which will be released before schedule()
- * and cmd reacquired afterwards.
+ * @lock: a locked spinlock_t, which will be released before cmd
+ * and schedule() and reacquired afterwards.
* @cmd: a command which is invoked outside the critical section before
* sleep
*
@@ -588,7 +587,7 @@ do { \
* change the result of the wait condition.
*
* This is supposed to be called while holding the lock. The lock is
- * dropped before going to sleep and invoking the cmd and is reacquired
+ * dropped before invoking the cmd and going to sleep and is reacquired
* afterwards.
*/
#define wait_event_lock_irq_cmd(wq, condition, lock, cmd) \
@@ -631,7 +630,6 @@ do { \
do { \
DEFINE_WAIT(__wait); \
\
- cmd; \
for (;;) { \
prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \
if (condition) \
@@ -641,8 +639,8 @@ do { \
break; \
} \
spin_unlock_irq(&lock); \
- schedule(); \
cmd; \
+ schedule(); \
spin_lock_irq(&lock); \
} \
finish_wait(&wq, &__wait); \
@@ -654,8 +652,8 @@ do { \
* be called with the lock taken.
* @wq: the waitqueue to wait on
* @condition: a C expression for the event to wait for
- * @lock: a locked spinlock_t, which will be released before schedule()
- * and cmd reacquired afterwards.
+ * @lock: a locked spinlock_t, which will be released before cmd and
+ * schedule() and reacquired afterwards.
* @cmd: a command which is invoked outside the critical section before
* sleep
*
@@ -667,7 +665,7 @@ do { \
* change the result of the wait condition.
*
* This is supposed to be called while holding the lock. The lock is
- * dropped before going to sleep and invoking the cmd and is reacquired
+ * dropped before invoking the cmd and going to sleep and is reacquired
* afterwards.
*
* The macro will return -ERESTARTSYS if it was interrupted by a signal
_
Patches currently in -mm which might be from lczerner@xxxxxxxxxx are
linux-next.patch
wait-add-wait_event_lock_irq-interface.patch
wait-add-wait_event_lock_irq-interface-fix.patch
wait-add-wait_event_lock_irq-interface-v3.patch
loop-limit-the-number-of-requests-in-the-bio-list.patch
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