tree 9629389f89d3086a6428ec6a8e47bc59ddfcf3ec
parent fe8eb122c82b2049c460fc6df6e8583a2f935cff
author Sergey Senozhatsky <sergey.senozhatsky@gmail.com> 1396910297 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1396913761 -0700

zram: make compression algorithm selection possible

Add and document `comp_algorithm' device attribute.  This attribute allows
to show supported compression and currently selected compression
algorithms:

	cat /sys/block/zram0/comp_algorithm
	[lzo] lz4

and change selected compression algorithm:
	echo lzo > /sys/block/zram0/comp_algorithm

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>