]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
epoll: simplify ep_poll_safewake() for CONFIG_DEBUG_LOCK_ALLOC
authorJason Baron <jbaron@akamai.com>
Thu, 5 Dec 2019 00:52:12 +0000 (16:52 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 5 Dec 2019 03:44:13 +0000 (19:44 -0800)
commitf6520c520842c532059c380d7a5b30b6e0e72ced
tree9108154e662d305cec3c7494110147299e07c826
parentcd28b119047b9928ddae914dd747f032ab929cc6
epoll: simplify ep_poll_safewake() for CONFIG_DEBUG_LOCK_ALLOC

Currently, ep_poll_safewake() in the CONFIG_DEBUG_LOCK_ALLOC case uses
ep_call_nested() in order to pass the correct subclass argument to
spin_lock_irqsave_nested().  However, ep_call_nested() adds unnecessary
checks for epoll depth and loops that are already verified when doing
EPOLL_CTL_ADD.  This mirrors a conversion that was done for
!CONFIG_DEBUG_LOCK_ALLOC in: commit 37b5e5212a44 ("epoll: remove
ep_call_nested() from ep_eventpoll_poll()")

Link: http://lkml.kernel.org/r/1567628549-11501-1-git-send-email-jbaron@akamai.com
Signed-off-by: Jason Baron <jbaron@akamai.com>
Reviewed-by: Roman Penyaev <rpenyaev@suse.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/eventpoll.c