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btrfs: compression: replace set_level callbacks by a common helper

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The set_level callbacks do not do anything special and can be replaced
by a helper that uses the levels defined in the tables.

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 16:49:06 +02:00
parent e18333a7cb
commit b0c1fe1eaf
5 changed files with 20 additions and 33 deletions
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9
fs/btrfs/compression.h
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@@ -156,13 +156,6 @@ struct btrfs_compress_op {
unsigned long start_byte,
size_t srclen, size_t destlen);
/*
* This bounds the level set by the user to be within range of a
* particular compression type. It returns the level that will be used
* 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;
@@ -179,6 +172,8 @@ extern const struct btrfs_compress_op btrfs_zstd_compress;
const char* btrfs_compress_type2str(enum btrfs_compression_type type);
bool btrfs_compress_is_valid_type(const char *str, size_t len);
unsigned int btrfs_compress_set_level(int type, unsigned level);
int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end);
#endif