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(parent: 215752f) | patch
acct: get rid of acct_lock for acct->count
authorAl Viro <viro@zeniv.linux.org.uk>
Thu, 7 Aug 2014 11:04:28 +0000 (07:04 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Thu, 7 Aug 2014 18:40:08 +0000 (14:40 -0400)
commit2798d4ce61601808b965253d60624bbf201b51b0
treee938df0fd8040a69da38a277c753aac42272c292tree | snapshot
parent215752fce31c80f3b3a1530bc7cddb3ba6a69b3acommit | diff
acct: get rid of acct_lock for acct->count

* make acct->count atomic and acct freeing - rcu-delayed.
* instead of grabbing acct_lock around the places where we take a reference,
do that under rcu_read_lock() with atomic_long_inc_not_zero().
* have the new acct locked before making ns->bacct point to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
kernel/acct.c diff | blob | history
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