md/raid1: add rcu protection to rdev in fix_read_error

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Since remove_and_add_spares() was added to hot_remove_disk() it has
been possible for an rdev to be hot-removed while fix_read_error()
was running, so we need to be more careful, and take a reference to
the rdev while performing IO.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

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NeilBrown 2016-06-02 16:19:52 +10:00 • committed by Shaohua Li

parent 854abd7584

commit 707a6a420c

1 changed files with 32 additions and 20 deletions

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drivers/md/raid1.c

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