btrfs: define compression levels statically

The maximum and default levels do not change and can be defined
directly. The set_level callback was a temporary solution and will be
removed.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-08-09 16:25:34 +02:00
parent efad8a853a
commit e18333a7cb
4 changed files with 10 additions and 0 deletions

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@ -162,6 +162,10 @@ struct btrfs_compress_op {
* if the level is out of bounds or the default if 0 is passed in.
*/
unsigned int (*set_level)(unsigned int level);
/* Maximum level supported by the compression algorithm */
unsigned int max_level;
unsigned int default_level;
};
/* The heuristic workspaces are managed via the 0th workspace manager */

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@ -523,4 +523,6 @@ const struct btrfs_compress_op btrfs_lzo_compress = {
.decompress_bio = lzo_decompress_bio,
.decompress = lzo_decompress,
.set_level = lzo_set_level,
.max_level = 1,
.default_level = 1,
};

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@ -437,4 +437,6 @@ const struct btrfs_compress_op btrfs_zlib_compress = {
.decompress_bio = zlib_decompress_bio,
.decompress = zlib_decompress,
.set_level = zlib_set_level,
.max_level = 9,
.default_level = BTRFS_ZLIB_DEFAULT_LEVEL,
};

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@ -729,4 +729,6 @@ const struct btrfs_compress_op btrfs_zstd_compress = {
.decompress_bio = zstd_decompress_bio,
.decompress = zstd_decompress,
.set_level = zstd_set_level,
.max_level = ZSTD_BTRFS_MAX_LEVEL,
.default_level = ZSTD_BTRFS_DEFAULT_LEVEL,
};