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authorMinchan Kim <minchan@kernel.org>2014-01-31 03:46:01 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-31 04:56:55 +0400
commit874e3cddc33f0c0f9cc08ad2b73fa0cbe7dfaa63 (patch)
treefe3e17b75de97c458a254fc6fc1df16587ea71ae /drivers
parent9b353db16d18f87242337e3e61a948c023505a65 (diff)
downloadlinux-874e3cddc33f0c0f9cc08ad2b73fa0cbe7dfaa63.tar.xz
zram: remove unnecessary free
Commit a0c516cbfc74 ("zram: don't grab mutex in zram_slot_free_noity") introduced pending zram slot free in zram's write path in case of missing slot free by memory allocation failure in zram_slot_free_notify but it is not necessary because we have already freed the slot right before overwriting. Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Jerome Marchand <jmarchan@redhat.com> Tested-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')
-rw-r--r--drivers/block/zram/zram_drv.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d87c7e98fb11..ebfddd852272 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -441,14 +441,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec, u32 index,
goto out;
}
- /*
- * zram_slot_free_notify could miss free so that let's
- * double check.
- */
- if (unlikely(meta->table[index].handle ||
- zram_test_flag(meta, index, ZRAM_ZERO)))
- zram_free_page(zram, index);
-
ret = lzo1x_1_compress(uncmem, PAGE_SIZE, src, &clen,
meta->compress_workmem);