]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
overlayfs, locking: Remove smp_mb__before_spinlock() usage
authorPeter Zijlstra <peterz@infradead.org>
Wed, 7 Jun 2017 15:43:46 +0000 (17:43 +0200)
committerIngo Molnar <mingo@kernel.org>
Thu, 10 Aug 2017 10:29:02 +0000 (12:29 +0200)
commitff7a5fb0f1d510997a845e0d227f30831ff38d9d
tree0dd4a272103f78b133f240c7c554f7942c9c042d
parent8b1b436dd1ccc8a1770af6e56eec047ad4920659
overlayfs, locking: Remove smp_mb__before_spinlock() usage

While we could replace the smp_mb__before_spinlock() with the new
smp_mb__after_spinlock(), the normal pattern is to use
smp_store_release() to publish an object that is used for
lockless_dereference() -- and mirrors the regular rcu_assign_pointer()
/ rcu_dereference() patterns.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
fs/overlayfs/readdir.c