Commits
Nitin Gupta committed b3a27d0529c
swap: Add swap slot free callback to block_device_operations This callback is required when RAM based devices are used as swap disks. One such device is ramzswap which is used as compressed in-memory swap disk. For such devices, we need a callback as soon as a swap slot is no longer used to allow freeing memory allocated for this slot. Without this callback, stale data can quickly accumulate in memory defeating the whole purpose of such devices. Signed-off-by: Nitin Gupta <ngupta@vflare.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Nigel Cunningham <nigel@tuxonice.net> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>