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| author | Eric Wong <normalperson@yhbt.net> | 2013-05-01 00:27:39 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 02:04:04 +0200 |
| commit | eea1d585917c538d90bc26fda5d8e53796feada2 (patch) | |
| tree | 2a0d05e84a0b036b6174b27d6359f11e89f56b46 /fs/configfs | |
| parent | epoll: trim epitem by one cache line (diff) | |
| download | linux-eea1d585917c538d90bc26fda5d8e53796feada2.tar.xz linux-eea1d585917c538d90bc26fda5d8e53796feada2.zip | |
epoll: use RCU to protect wakeup_source in epitem
This prevents wakeup_source destruction when a user hits the item with
EPOLL_CTL_MOD while ep_poll_callback is running.
Tested with CONFIG_SPARSE_RCU_POINTER=y and "make fs/eventpoll.o C=2"
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: NeilBrown <neilb@suse.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/configfs')
0 files changed, 0 insertions, 0 deletions