zram: report failed read and write stats

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zram accounted but did not report numbers of failed read and write
queries.  make these stats available as failed_reads and failed_writes
attrs.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Sergey Senozhatsky 2014-04-07 15:38:05 -07:00 • committed by Linus Torvalds

parent a68eb3b65e

commit 6444724939

1 changed files with 4 additions and 0 deletions

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drivers/block/zram/zram_drv.c

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