Commits
Christoph Hellwig committed 56fef7c6e02
raid5-cache: simplify state machine when caches flushes are not needed For devices without a volatile write cache we don't need to send a FLUSH command to ensure writes are stable on disk, and thus can avoid the whole step of batching up bios for processing by the MD thread. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Shaohua Li <shli@fb.com> Signed-off-by: NeilBrown <neilb@suse.com>