The patch titled
Subject: userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key
has been removed from the -mm tree. Its filename was
userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key
userfaultfd needs to wake all waitqueues (pass 0 as nr parameter), instead
of the current hardcoded 1 (that would wake just the first waitqueue in
the head list).
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Acked-by: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Sanidhya Kashyap <sanidhya.gatech@xxxxxxxxx>
Cc: zhang.zhanghailiang@xxxxxxxxxx
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Andres Lagar-Cavilla <andreslc@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Peter Feiner <pfeiner@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: "Huangpeng (Peter)" <peter.huangpeng@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/wait.h | 5 +++--
kernel/sched/wait.c | 7 ++++---
net/sunrpc/sched.c | 2 +-
3 files changed, 8 insertions(+), 6 deletions(-)
diff -puN include/linux/wait.h~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key include/linux/wait.h
--- a/include/linux/wait.h~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key
+++ a/include/linux/wait.h
@@ -147,7 +147,8 @@ __remove_wait_queue(wait_queue_head_t *h
typedef int wait_bit_action_f(struct wait_bit_key *);
void __wake_up(wait_queue_head_t *q, unsigned int mode, int nr, void *key);
-void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, void *key);
+void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, int nr,
+ void *key);
void __wake_up_sync_key(wait_queue_head_t *q, unsigned int mode, int nr, void *key);
void __wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr);
void __wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr);
@@ -179,7 +180,7 @@ wait_queue_head_t *bit_waitqueue(void *,
#define wake_up_poll(x, m) \
__wake_up(x, TASK_NORMAL, 1, (void *) (m))
#define wake_up_locked_poll(x, m) \
- __wake_up_locked_key((x), TASK_NORMAL, (void *) (m))
+ __wake_up_locked_key((x), TASK_NORMAL, 1, (void *) (m))
#define wake_up_interruptible_poll(x, m) \
__wake_up(x, TASK_INTERRUPTIBLE, 1, (void *) (m))
#define wake_up_interruptible_sync_poll(x, m) \
diff -puN kernel/sched/wait.c~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key kernel/sched/wait.c
--- a/kernel/sched/wait.c~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key
+++ a/kernel/sched/wait.c
@@ -106,9 +106,10 @@ void __wake_up_locked(wait_queue_head_t
}
EXPORT_SYMBOL_GPL(__wake_up_locked);
-void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, void *key)
+void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, int nr,
+ void *key)
{
- __wake_up_common(q, mode, 1, 0, key);
+ __wake_up_common(q, mode, nr, 0, key);
}
EXPORT_SYMBOL_GPL(__wake_up_locked_key);
@@ -283,7 +284,7 @@ void abort_exclusive_wait(wait_queue_hea
if (!list_empty(&wait->task_list))
list_del_init(&wait->task_list);
else if (waitqueue_active(q))
- __wake_up_locked_key(q, mode, key);
+ __wake_up_locked_key(q, mode, 1, key);
spin_unlock_irqrestore(&q->lock, flags);
}
EXPORT_SYMBOL(abort_exclusive_wait);
diff -puN net/sunrpc/sched.c~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key net/sunrpc/sched.c
--- a/net/sunrpc/sched.c~userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key
+++ a/net/sunrpc/sched.c
@@ -297,7 +297,7 @@ static int rpc_complete_task(struct rpc_
clear_bit(RPC_TASK_ACTIVE, &task->tk_runstate);
ret = atomic_dec_and_test(&task->tk_count);
if (waitqueue_active(wq))
- __wake_up_locked_key(wq, TASK_NORMAL, &k);
+ __wake_up_locked_key(wq, TASK_NORMAL, 1, &k);
spin_unlock_irqrestore(&wq->lock, flags);
return ret;
}
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-selftest-update-userfaultfd-x86-32bit-syscall-number.patch
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