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| author | Mark Brown <broonie@kernel.org> | 2018-01-08 15:54:50 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-01-08 15:54:50 +0000 |
| commit | 498495dba268b20e8eadd7fe93c140c68b6cc9d2 (patch) | |
| tree | 00d1562049d8bc2194fddd9ba0cbbe0812ad6f68 /fs/btrfs/zlib.c | |
| parent | d5cc0a1fcbb5ddbef9fdd4c4a978da3254ddbf37 (diff) | |
| parent | 5c256045b87b8aa8e5bc9d2e2fdc0802351c1f99 (diff) | |
| download | linux-stable-498495dba268b20e8eadd7fe93c140c68b6cc9d2.tar.gz linux-stable-498495dba268b20e8eadd7fe93c140c68b6cc9d2.tar.bz2 linux-stable-498495dba268b20e8eadd7fe93c140c68b6cc9d2.zip | |
Merge branch 'fix/intel' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel
Diffstat (limited to 'fs/btrfs/zlib.c')
| -rw-r--r-- | fs/btrfs/zlib.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index c248f9286366..2b52950dc2c6 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -37,6 +37,7 @@ struct workspace { z_stream strm; char *buf; struct list_head list; + int level; }; static void zlib_free_workspace(struct list_head *ws) @@ -96,7 +97,7 @@ static int zlib_compress_pages(struct list_head *ws, *total_out = 0; *total_in = 0; - if (Z_OK != zlib_deflateInit(&workspace->strm, 3)) { + if (Z_OK != zlib_deflateInit(&workspace->strm, workspace->level)) { pr_warn("BTRFS: deflateInit failed\n"); ret = -EIO; goto out; @@ -402,10 +403,22 @@ next: return ret; } +static void zlib_set_level(struct list_head *ws, unsigned int type) +{ + struct workspace *workspace = list_entry(ws, struct workspace, list); + unsigned level = (type & 0xF0) >> 4; + + if (level > 9) + level = 9; + + workspace->level = level > 0 ? level : 3; +} + const struct btrfs_compress_op btrfs_zlib_compress = { .alloc_workspace = zlib_alloc_workspace, .free_workspace = zlib_free_workspace, .compress_pages = zlib_compress_pages, .decompress_bio = zlib_decompress_bio, .decompress = zlib_decompress, + .set_level = zlib_set_level, }; |