Subject: + epoll-do-not-take-global-epmutex-for-simple-topologies-fix.patch added to -mm tree
To: akpm@xxxxxxxxxxxxxxxxxxxx,davidel@xxxxxxxxxxxxxxx,jbaron@xxxxxxxxxx,nelhage@xxxxxxxxxxx,normalperson@xxxxxxxx,nzimmer@xxxxxxx,paulmck@xxxxxxxxxx,viro@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 03 Oct 2013 14:52:13 -0700
The patch titled
Subject: epoll-do-not-take-global-epmutex-for-simple-topologies-fix
has been added to the -mm tree. Its filename is
epoll-do-not-take-global-epmutex-for-simple-topologies-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/epoll-do-not-take-global-epmutex-for-simple-topologies-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/epoll-do-not-take-global-epmutex-for-simple-topologies-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: epoll-do-not-take-global-epmutex-for-simple-topologies-fix
- use `bool' for boolean variables
- remove unneeded/undesirable cast of void*
- add missed ep_scan_ready_list() kerneldoc
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Davide Libenzi <davidel@xxxxxxxxxxxxxxx>
Cc: Eric Wong <normalperson@xxxxxxxx>
Cc: Jason Baron <jbaron@xxxxxxxxxx>
Cc: Nathan Zimmer <nzimmer@xxxxxxx>
Cc: Nelson Elhage <nelhage@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/eventpoll.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff -puN fs/eventpoll.c~epoll-do-not-take-global-epmutex-for-simple-topologies-fix fs/eventpoll.c
--- a/fs/eventpoll.c~epoll-do-not-take-global-epmutex-for-simple-topologies-fix
+++ a/fs/eventpoll.c
@@ -589,13 +589,14 @@ static inline void ep_pm_stay_awake_rcu(
* @sproc: Pointer to the scan callback.
* @priv: Private opaque data passed to the @sproc callback.
* @depth: The current depth of recursive f_op->poll calls.
+ * @ep_locked: caller already holds ep->mtx
*
* Returns: The same integer error code returned by the @sproc callback.
*/
static int ep_scan_ready_list(struct eventpoll *ep,
int (*sproc)(struct eventpoll *,
struct list_head *, void *),
- void *priv, int depth, int ep_locked)
+ void *priv, int depth, bool ep_locked)
{
int error, pwake = 0;
unsigned long flags;
@@ -836,12 +837,12 @@ static void ep_ptable_queue_proc(struct
struct readyevents_arg {
struct eventpoll *ep;
- int locked;
+ bool locked;
};
static int ep_poll_readyevents_proc(void *priv, void *cookie, int call_nests)
{
- struct readyevents_arg *arg = (struct readyevents_arg *)priv;
+ struct readyevents_arg *arg = priv;
return ep_scan_ready_list(arg->ep, ep_read_events_proc, NULL,
call_nests + 1, arg->locked);
@@ -857,7 +858,7 @@ static unsigned int ep_eventpoll_poll(st
* During ep_insert() we already hold the ep->mtx for the tfile.
* Prevent re-aquisition.
*/
- arg.locked = ((wait && (wait->_qproc == ep_ptable_queue_proc)) ? 1 : 0);
+ arg.locked = wait && (wait->_qproc == ep_ptable_queue_proc);
arg.ep = ep;
/* Insert inside our poll wait queue */
@@ -1563,7 +1564,7 @@ static int ep_send_events(struct eventpo
esed.maxevents = maxevents;
esed.events = events;
- return ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, 0);
+ return ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0, false);
}
static inline struct timespec ep_set_mstimeout(long ms)
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
i-need-old-gcc.patch
ipc-update-locking-scheme-comments-fix.patch
kernel-time-tick-commonc-document-tick_do_timer_cpu.patch
makefile-enable-werror=implicit-int-and-werror=strict-prototypes-by-default.patch
mm-readaheadc-do_readhead-dont-check-for-readpage.patch
mm.patch
mm-thp-khugepaged-add-policy-for-finding-target-node-fix.patch
kernel-printk-printkc-convert-to-pr_foo.patch
checkpatch-extend-camelcase-types-and-ignore-existing-camelcase-uses-in-a-patch.patch
checkpatch-add-test-for-defines-of-arch_has_foo.patch
epoll-do-not-take-global-epmutex-for-simple-topologies-fix.patch
binfmt_elfc-use-get_random_int-to-fix-entropy-depleting.patch
fat-additions-to-support-fat_fallocate.patch
fat-additions-to-support-fat_fallocate-v6-checkpatch-fixes.patch
gcov-add-support-for-gcc-47-gcov-format-fix.patch
gcov-add-support-for-gcc-47-gcov-format-fix-fix.patch
gcov-add-support-for-gcc-47-gcov-format-checkpatch-fixes.patch
kernel-modulec-use-pr_foo.patch
kernel-gcov-fsc-use-pr_warn.patch
linux-next.patch
linux-next-git-rejects.patch
mm-drop-actor-argument-of-do_generic_file_read-fix.patch
debugging-keep-track-of-page-owners-fix-2-fix.patch
debugging-keep-track-of-page-owners-fix-2-fix-fix-fix.patch
journal_add_journal_head-debug.patch
kernel-forkc-export-kernel_thread-to-modules.patch
mutex-subsystem-synchro-test-module.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
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