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(parent: 83f1261) | patch
md/raid10: add rcu protection in raid10_status.
authorNeilBrown <neilb@suse.com>
Thu, 2 Jun 2016 06:19:52 +0000 (16:19 +1000)
committerShaohua Li <shli@fb.com>
Mon, 13 Jun 2016 18:54:14 +0000 (11:54 -0700)
commitd44b0a928fa9925fb453d7acc42a48c79de2c6f7
tree24351c0d633aeec643c7f39ef6642096d4255dc3tree | snapshot
parent83f1261f5e5516d7cf58a04b97e4e63e747a9157commit | diff
md/raid10: add rcu protection in raid10_status.

mirrors[].rdev can become NULL at any point unless:
 - a counted reference is held
 - ->reconfig_mutex is held, or
 - rcu_read_lock() is held

raid10_status holds none of these.  So add rcu_read_lock()
protection.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
drivers/md/raid10.c diff | blob | history
Beck SC1x5 Kernel