| commit | bdfd1140731a67c74fd74814f222c8078171adcd | [log] [tgz] |
|---|---|---|
| author | NeilBrown <neilb@suse.de> | Tue May 22 13:55:22 2012 +1000 |
| committer | NeilBrown <neilb@suse.de> | Tue May 22 13:55:22 2012 +1000 |
| tree | e244aa26d983b56c61fb8d53eb9a1a4105476a85 | |
| parent | fae7d326cd0905624c173337fdfcfe9b86b9e6e2 [diff] |
md/bitmap: make _page_attr bitops atomic. Using e.g. set_bit instead of __set_bit and using test_and_clear_bit allow us to remove some locking and contract other locked ranges. It is rare that we set or clear a lot of these bits, so gain should outweigh any cost. Signed-off-by: NeilBrown <neilb@suse.de>