[PATCHv2] btrfs compression: merge inflate and deflate z_streams

Hello, This patch reduces zlib compression memory usage by `merging' inflate and deflate streams into a single stream. -- v2: rebased-on linux-next rc4 20140707 Sergey Senozhatsky (1): btrfs compression: merge inflate and deflate z_streams fs/btrfs/zlib.c

[PATCHv2] btrfs compression: merge inflate and deflate z_streams

one of size: max(zlib_deflate_workspacesize(), zlib_inflate_workspacesize()) Reviewed-by: David Sterba Signed-off-by: Sergey Senozhatsky --- fs/btrfs/zlib.c | 138 1 file changed, 68 insertions(+), 70 deletions(-) diff --git a/fs/btrfs/zlib.c b/fs/

Re: [PATCH] btrfs compression: merge inflate and deflate z_streams

On (07/01/14 16:44), David Sterba wrote: > On Tue, Jul 01, 2014 at 12:32:10AM +0900, Sergey Senozhatsky wrote: > > `struct workspace' used for zlib compression contains two zlib > > z_stream-s: `def_strm' used in zlib_compress_pages(), and `inf_strm

[PATCH] btrfs compression: merge inflate and deflate z_streams

one of size: max(zlib_deflate_workspacesize(), zlib_inflate_workspacesize()) Signed-off-by: Sergey Senozhatsky --- fs/btrfs/zlib.c | 138 1 file changed, 68 insertions(+), 70 deletions(-) diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 4f19631..

[PATCH] btrfs compression: reuse recently used workspace

f address translations. p.s. This patch is theoretical, no testing has been performed in order to support this patch. Sergey Senozhatsky (1): btrfs compression: reuse recently used workspace fs/btrfs/compression.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.0.0.548.ge727dec -- To un

[PATCH] btrfs compression: reuse recently used workspace

Add compression `workspace' in free_workspace() to `idle_workspace' list head, instead of tail. So we have better chances to reuse most recently used `workspace'. Signed-off-by: Sergey Senozhatsky --- fs/btrfs/compression.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)