linux-toradex.git/drivers/md/bcache/writeback.h, branch v3.11 Linux kernel for Apalis and Colibri modules bcache: Write out full stripes 2013-06-27T04:58:04+00:00 Kent Overstreet koverstreet@google.com 2013-06-05T13:24:39+00:00 72c270612bd33192fa836ad0f2939af1ca218292 Now that we're tracking dirty data per stripe, we can add two optimizations for raid5/6: * If a stripe is already dirty, force writes to that stripe to writeback mode - to help build up full stripes of dirty data * When flushing dirty data, preferentially write out full stripes first if there are any. Signed-off-by: Kent Overstreet <koverstreet@google.com> 
Now that we're tracking dirty data per stripe, we can add two
optimizations for raid5/6:

 * If a stripe is already dirty, force writes to that stripe to
   writeback mode - to help build up full stripes of dirty data

 * When flushing dirty data, preferentially write out full stripes first
   if there are any.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
bcache: Track dirty data by stripe 2013-06-27T04:57:23+00:00 Kent Overstreet koverstreet@google.com 2013-06-05T13:21:07+00:00 279afbad4e54acbd61bf88a54a73af3bbfdeb5dd To make background writeback aware of raid5/6 stripes, we first need to track the amount of dirty data within each stripe - we do this by breaking up the existing sectors_dirty into per stripe atomic_ts Signed-off-by: Kent Overstreet <koverstreet@google.com> 
To make background writeback aware of raid5/6 stripes, we first need to
track the amount of dirty data within each stripe - we do this by
breaking up the existing sectors_dirty into per stripe atomic_ts

Signed-off-by: Kent Overstreet <koverstreet@google.com>