Minchan Kim 7e5a5104c6 zram: Fix deadlock bug in partial read/write ... Now zram allocates new page with GFP_KERNEL in zram I/O path if IO is partial. Unfortunately, It may cause deadlock with reclaim path like below. write_page from fs fs_lock allocation(GFP_KERNEL) reclaim pageout write_page from fs fs_lock <-- deadlock This patch fixes it by using GFP_NOIO. In read path, we reorganize code flow so that kmap_atomic is called after the GFP_NOIO allocation. Cc: stable@vger.kernel.org Acked-by: Jerome Marchand <jmarchand@redhat.com> Acked-by: Nitin Gupta <ngupta@vflare.org> [ penberg@kernel.org: don't use GFP_ATOMIC ] Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-02-03 17:52:49 -08:00
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Kconfig	staging: Add angle bracket before and after the URL	2013-01-07 14:56:04 -08:00
Makefile
zram_drv.c	zram: Fix deadlock bug in partial read/write	2013-02-03 17:52:49 -08:00
zram_drv.h	staging: zram: correct obsolete comment on max_zpage_size	2012-10-22 13:43:46 -07:00
zram_sysfs.c	staging: zram: handle mem suffixes in disk size zram_sysfs parameter	2012-10-31 14:49:09 -07:00
zram.txt