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This patch enables write IO to transfer data to backing device. For that, it implements write_to_bdev function which creates new bio and chaining with parent bio to make the parent bio asynchrnous. For rw_page which don't have parent bio, it submit owned bio and handle IO completion by zram_page_end_io. Also, this patch defines new flag ZRAM_WB to mark written page for later read IO. [xieyisheng1@huawei.com: fix typo in comment] Link: http://lkml.kernel.org/r/1502707447-6944-2-git-send-email-xieyisheng1@huawei.com Link: http://lkml.kernel.org/r/1498459987-24562-8-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com> Cc: Juneho Choi <juno.choi@lge.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kconfig | ||
Makefile | ||
zcomp.c | ||
zcomp.h | ||
zram_drv.c | ||
zram_drv.h |