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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2016-01-15 00:22:35 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 20:40:52 +0100 |
| commit | e02d238c9852a91b30da9ea32ce36d1416cdc683 (patch) | |
| tree | 71086a6b6dfef99f3d446d477fe0d1124e860916 /drivers/block | |
| parent | zram: pass gfp from zcomp frontend to backend (diff) | |
| download | linux-e02d238c9852a91b30da9ea32ce36d1416cdc683.tar.xz linux-e02d238c9852a91b30da9ea32ce36d1416cdc683.zip | |
zram/zcomp: do not zero out zcomp private pages
Do not __GFP_ZERO allocated zcomp ->private pages. We keep allocated
streams around and use them for read/write requests, so we supply a
zeroed out ->private to compression algorithm as a scratch buffer only
once -- the first time we use that stream. For the rest of IO requests
served by this stream ->private usually contains some temporarily data
from the previous requests.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/zram/zcomp_lz4.c | 4 | ||||
| -rw-r--r-- | drivers/block/zram/zcomp_lzo.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/block/zram/zcomp_lz4.c b/drivers/block/zram/zcomp_lz4.c index dc2338d5258c..0110086accba 100644 --- a/drivers/block/zram/zcomp_lz4.c +++ b/drivers/block/zram/zcomp_lz4.c @@ -19,10 +19,10 @@ static void *zcomp_lz4_create(gfp_t flags) { void *ret; - ret = kzalloc(LZ4_MEM_COMPRESS, flags); + ret = kmalloc(LZ4_MEM_COMPRESS, flags); if (!ret) ret = __vmalloc(LZ4_MEM_COMPRESS, - flags | __GFP_ZERO | __GFP_HIGHMEM, + flags | __GFP_HIGHMEM, PAGE_KERNEL); return ret; } diff --git a/drivers/block/zram/zcomp_lzo.c b/drivers/block/zram/zcomp_lzo.c index 0ab6fce8abe4..ed7a1f0549ec 100644 --- a/drivers/block/zram/zcomp_lzo.c +++ b/drivers/block/zram/zcomp_lzo.c @@ -19,10 +19,10 @@ static void *lzo_create(gfp_t flags) { void *ret; - ret = kzalloc(LZO1X_MEM_COMPRESS, flags); + ret = kmalloc(LZO1X_MEM_COMPRESS, flags); if (!ret) ret = __vmalloc(LZO1X_MEM_COMPRESS, - flags | __GFP_ZERO | __GFP_HIGHMEM, + flags | __GFP_HIGHMEM, PAGE_KERNEL); return ret; } |