kernel/linux.git/drivers/md/bcache/alloc.c, branch v3.11.1

bcache: Allocation kthread fixes

2013-07-12T07:22:49+00:00

The alloc kthread should've been using try_to_freeze() - and also there was the potential for the alloc kthread to get woken up after it had shut down, which would have been bad. Signed-off-by: Kent Overstreet

bcache: Fix/revamp tracepoints

2013-06-27T00:09:15+00:00

The tracepoints were reworked to be more sensible, and fixed a null pointer deref in one of the tracepoints. Converted some of the pr_debug()s to tracepoints - this is partly a performance optimization; it used to be that with DEBUG or CONFIG_DYNAMIC_DEBUG pr_debug() was an empty macro; but at some point it was changed to an empty inline function. Some of the pr_debug() statements had rather expensive function calls as part of the arguments, so this code was getting run unnecessarily even on non debug kernels - in some fast paths, too. Signed-off-by: Kent Overstreet

bcache: Convert allocator thread to kthread

2013-06-27T00:09:13+00:00

Using a workqueue when we just want a single thread is a bit silly. Signed-off-by: Kent Overstreet

bcache: Allocator cleanup/fixes

2013-05-01T02:14:40+00:00

The main fix is that bch_allocator_thread() wasn't waiting on garbage collection to finish (if invalidate_buckets had set ca->invalidate_needs_gc); we need that to make sure the allocator doesn't spin and potentially block gc from finishing. Signed-off-by: Kent Overstreet

bcache: Style/checkpatch fixes

2013-03-25T19:06:13+00:00

Took out some nested functions, and fixed some more checkpatch complaints. Signed-off-by: Kent Overstreet Cc: linux-bcache@vger.kernel.org Signed-off-by: Jens Axboe

bcache: A block layer cache

2013-03-23T23:11:31+00:00

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