The patch titled
Subject: kernel/async.c: fix wrong waiting condition of wait_event
has been removed from the -mm tree. Its filename was
kernel-async-fixed-the-wrong-waitting-condition-of-wait_event.patch
This patch was dropped because it had testing failures
------------------------------------------------------
From: Yonghui Yang <mark.yang@xxxxxxxxxxxxxx>
Subject: kernel/async.c: fix wrong waiting condition of wait_event
Change the waitting condition of wait_event in
async_synchronize_cookie_domain().
This function waits until all asynchronous function calls for the certain
domain have been done.
But, lowest_in_progress() returns the lowest *pending* entry's cookie.
So we should make sure that the return value of lowest_in_progress(domain)
must be larger than @cookie.
Signed-off-by: Yonghui Yang <mark.yang@xxxxxxxxxxxxxx>
Signed-off-by: Geng Ren <geng.ren@xxxxxxxxxxxxxx>
Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxxxxxx>
Tested-by: Wei Qiao <wei.qiao@xxxxxxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/async.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/async.c~kernel-async-fixed-the-wrong-waitting-condition-of-wait_event kernel/async.c
--- a/kernel/async.c~kernel-async-fixed-the-wrong-waitting-condition-of-wait_event
+++ a/kernel/async.c
@@ -267,7 +267,7 @@ EXPORT_SYMBOL_GPL(async_unregister_domai
*/
void async_synchronize_full_domain(struct async_domain *domain)
{
- async_synchronize_cookie_domain(ASYNC_COOKIE_MAX, domain);
+ async_synchronize_cookie_domain(ASYNC_COOKIE_MAX-1, domain);
}
EXPORT_SYMBOL_GPL(async_synchronize_full_domain);
@@ -289,7 +289,7 @@ void async_synchronize_cookie_domain(asy
starttime = ktime_get();
}
- wait_event(async_done, lowest_in_progress(domain) >= cookie);
+ wait_event(async_done, lowest_in_progress(domain) > cookie);
if (initcall_debug && system_state == SYSTEM_BOOTING) {
endtime = ktime_get();
_
Patches currently in -mm which might be from mark.yang@xxxxxxxxxxxxxx are
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