Weijie Yang c406515239 zram: avoid kunmap_atomic() of a NULL pointer ... zram could kunmap_atomic() a NULL pointer in a rare situation: a zram page becomes a full-zeroed page after a partial write io. The current code doesn't handle this case and performs kunmap_atomic() on a NULL pointer, which panics the kernel. This patch fixes this issue. Signed-off-by: Weijie Yang <weijie.yang@samsung.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Weijie Yang <weijie.yang.kh@gmail.com> Acked-by: Jerome Marchand <jmarchan@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-11-13 16:17:05 -08:00
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Kconfig	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
Makefile	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
zcomp_lz4.c	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
zcomp_lz4.h	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
zcomp_lzo.c	zram: introduce compressing backend abstraction	2014-04-07 16:36:01 -07:00
zcomp_lzo.h	zram: introduce compressing backend abstraction	2014-04-07 16:36:01 -07:00
zcomp.c	zram: use scnprintf() in attrs show() methods	2014-04-07 16:36:02 -07:00
zcomp.h	zram: propagate error to user	2014-04-07 16:36:02 -07:00
zram_drv.c	zram: avoid kunmap_atomic() of a NULL pointer	2014-11-13 16:17:05 -08:00
zram_drv.h	zram: report maximum used memory	2014-10-09 22:26:02 -04:00