user/sven/linux.git/drivers/md/bcache/writeback.c, branch v3.10.61

bcache: Fix a dumb CPU spinning bug in writeback

2013-10-05T14:13:09Z

commit 79e3dab90d9f826ceca67c7890e048ac9169de49 upstream. schedule_timeout() != schedule_timeout_uninterruptible() Signed-off-by: Kent Overstreet Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

bcache: Fix a writeback performance regression

2013-10-05T14:13:09Z

commit c2a4f3183a1248f615a695fbd8905da55ad11bba upstream. Background writeback works by scanning the btree for dirty data and adding those keys into a fixed size buffer, then for each dirty key in the keybuf writing it to the backing device. When read_dirty() finishes and it's time to scan for more dirty data, we need to wait for the outstanding writeback IO to finish - they still take up slots in the keybuf (so that foreground writes can check for them to avoid races) - without that wait, we'll continually rescan when we'll be able to add at most a key or two to the keybuf, and that takes locks that starves foreground IO. Doh. Signed-off-by: Kent Overstreet Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

bcache: Fix error handling in init code

2013-05-15T07:48:14Z

This code appears to have rotted... fix various bugs and do some refactoring. Signed-off-by: Kent Overstreet

bcache: Don't export utility code, prefix with bch_

2013-03-28T18:50:55Z

Signed-off-by: Kent Overstreet Cc: linux-bcache@vger.kernel.org Signed-off-by: Jens Axboe

bcache: A block layer cache

2013-03-23T23:11:31Z

Does writethrough and writeback caching, handles unclean shutdown, and has a bunch of other nifty features motivated by real world usage. See the wiki at http://bcache.evilpiepirate.org for more. Signed-off-by: Kent Overstreet