dm mpath: use atomic_t for counting members of 'struct multipath'

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The use of atomic_t for nr_valid_paths, pg_init_in_progress and
pg_init_count will allow relaxing the use of the m->lock spinlock.

Suggested-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Mike Snitzer 2016-03-17 17:10:15 -04:00

parent 518257b132

commit 91e968aa60

1 changed files with 33 additions and 28 deletions

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61

drivers/md/dm-mpath.c

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