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authorMinchan Kim <minchan@kernel.org>2017-02-24 14:56:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-24 17:46:54 -0800
commita09759acaacf6cf738e1bc6c66d41485c87fd371 (patch)
tree0ffdb1ead5874b09ebbbb13cccc819ff9b3d68a5 /drivers/block/zram/zram_drv.h
parent3edf41d84587701db4650276262d1b71fdf20d9f (diff)
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 'drivers/block/zram/zram_drv.h')
-rw-r--r--drivers/block/zram/zram_drv.h3
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.