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Btrfs: Add ACCESS_ONCE() to transaction->abort accesses
authorMiao Xie <miaox@cn.fujitsu.com>
Tue, 15 Jan 2013 06:27:25 +0000 (06:27 +0000)
committerJosef Bacik <jbacik@fusionio.com>
Thu, 24 Jan 2013 17:51:23 +0000 (12:51 -0500)
commit8d25a086eb104297e3ba1fdd180b04cfaaa84797
tree075e3a0e731b08a418ad65dfd4e0bb53818a40c1tree | snapshot (tar.gz zip)
parente58dd74bccb4317e39e4b675bf9c6cd133608faccommit | diff
Btrfs: Add ACCESS_ONCE() to transaction->abort accesses

We may access and update transaction->aborted on the different CPUs without
lock, so we need ACCESS_ONCE() wrapper to prevent the compiler from creating
unsolicited accesses and make sure we can get the right value.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
fs/btrfs/super.c diff | blob | blame | history
fs/btrfs/transaction.c diff | blob | blame | history