Commit-ID: dc5d4afbb0bf7b7746ff5e56e1a5688ad7f29b32
Gitweb: https://git.kernel.org/tip/dc5d4afbb0bf7b7746ff5e56e1a5688ad7f29b32
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Thu, 15 Mar 2018 11:43:43 +0100
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 20 Mar 2018 08:23:21 +0100
sched/wait, fs/fscache: Convert wait_on_atomic_t() usage to the new wait_var_event() API
The old wait_on_atomic_t() is going to get removed, use the more
flexible wait_var_event() API instead.
No change in functionality.
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
fs/fscache/cookie.c | 7 ++++---
include/linux/fscache-cache.h | 2 +-
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index ff84258132bb..d705125665f0 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -557,9 +557,10 @@ void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate)
* n_active reaches 0). This makes sure outstanding reads and writes
* have completed.
*/
- if (!atomic_dec_and_test(&cookie->n_active))
- wait_on_atomic_t(&cookie->n_active, atomic_t_wait,
- TASK_UNINTERRUPTIBLE);
+ if (!atomic_dec_and_test(&cookie->n_active)) {
+ wait_var_event(&cookie->n_active,
+ !atomic_read(&cookie->n_active));
+ }
/* Make sure any pending writes are cancelled. */
if (cookie->def->type != FSCACHE_COOKIE_TYPE_INDEX)
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 4c467ef50159..3b03e29e2f1a 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -496,7 +496,7 @@ static inline bool __fscache_unuse_cookie(struct fscache_cookie *cookie)
static inline void __fscache_wake_unused_cookie(struct fscache_cookie *cookie)
{
- wake_up_atomic_t(&cookie->n_active);
+ wake_up_var(&cookie->n_active);
}
/**
--
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