diff options
| author |   Minchan Kim <minchan@kernel.org> | 2017-02-24 14:56:47 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-24 17:46:54 -0800 |
| commit | a09759acaacf6cf738e1bc6c66d41485c87fd371 (patch) | |
| tree | 0ffdb1ead5874b09ebbbb13cccc819ff9b3d68a5 /drivers/block/zram/zram_drv.h | |
| parent | mm: fix comments for mmap_init() (diff) | |
| download | linux-dev-a09759acaacf6cf738e1bc6c66d41485c87fd371.tar.xz linux-dev-a09759acaacf6cf738e1bc6c66d41485c87fd371.zip | |
zram: remove waitqueue for IO done
zram_reset_device() waits for ongoing writepage pages to be completed by
zram->refcount logic. However, it's pointless because before the reset,
we prevent further opening of zram by zram->claim and flush all of
pending IO by fsync_bdev so there should be no pending IO at the
zram_reset_device().
So let's remove that code which is even broken due to the lack of
wake_up elsewhere.
Link: http://lkml.kernel.org/r/1485145031-11661-1-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/block/zram/zram_drv.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index 74fcf10da374..2692554b7737 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -106,9 +106,6 @@ struct zram { unsigned long limit_pages; struct zram_stats stats; - atomic_t refcount; /* refcount for zram_meta */ - /* wait all IO under all of cpu are done */ - wait_queue_head_t io_done; /* * This is the limit on amount of *uncompressed* worth of data * we can store in a disk. |