The set_level callbacks do not do anything special and can be replaced by a helper that uses the levels defined in the tables.
Signed-off-by: David Sterba <[email protected]> --- fs/btrfs/compression.c | 20 ++++++++++++++++++-- fs/btrfs/compression.h | 9 ++------- fs/btrfs/lzo.c | 6 ------ fs/btrfs/zlib.c | 9 --------- fs/btrfs/zstd.c | 9 --------- 5 files changed, 20 insertions(+), 33 deletions(-) diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 60c47b417a4b..53376c640f61 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -1039,7 +1039,7 @@ int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping, struct list_head *workspace; int ret; - level = btrfs_compress_op[type]->set_level(level); + level = btrfs_compress_set_level(type, level); workspace = get_workspace(type, level); ret = btrfs_compress_op[type]->compress_pages(workspace, mapping, start, pages, @@ -1611,7 +1611,23 @@ unsigned int btrfs_compress_str2level(unsigned int type, const char *str) level = 0; } - level = btrfs_compress_op[type]->set_level(level); + level = btrfs_compress_set_level(type, level); + + return level; +} + +/* + * Adjust @level according to the limits of the compression algorithm or + * fallback to default + */ +unsigned int btrfs_compress_get_level(int type, unsigned level) +{ + const struct btrfs_compress_op *ops = btrfs_compress_op[type]; + + if (level == 0) + level = ops->default_level; + else + level = min(level, ops->max_level); return level; } diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index cffd689adb6e..4cb8be9ff88b 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -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 diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index adac6cb30d65..acad4174f68d 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -507,11 +507,6 @@ static int lzo_decompress(struct list_head *ws, unsigned char *data_in, return ret; } -static unsigned int lzo_set_level(unsigned int level) -{ - return 0; -} - const struct btrfs_compress_op btrfs_lzo_compress = { .init_workspace_manager = lzo_init_workspace_manager, .cleanup_workspace_manager = lzo_cleanup_workspace_manager, @@ -522,7 +517,6 @@ const struct btrfs_compress_op btrfs_lzo_compress = { .compress_pages = lzo_compress_pages, .decompress_bio = lzo_decompress_bio, .decompress = lzo_decompress, - .set_level = lzo_set_level, .max_level = 1, .default_level = 1, }; diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 03d6c3683bd9..df1aace5df50 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -418,14 +418,6 @@ static int zlib_decompress(struct list_head *ws, unsigned char *data_in, return ret; } -static unsigned int zlib_set_level(unsigned int level) -{ - if (!level) - return BTRFS_ZLIB_DEFAULT_LEVEL; - - return min_t(unsigned int, level, 9); -} - const struct btrfs_compress_op btrfs_zlib_compress = { .init_workspace_manager = zlib_init_workspace_manager, .cleanup_workspace_manager = zlib_cleanup_workspace_manager, @@ -436,7 +428,6 @@ const struct btrfs_compress_op btrfs_zlib_compress = { .compress_pages = zlib_compress_pages, .decompress_bio = zlib_decompress_bio, .decompress = zlib_decompress, - .set_level = zlib_set_level, .max_level = 9, .default_level = BTRFS_ZLIB_DEFAULT_LEVEL, }; diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c index b2b23a6a497d..0af4a5cd4313 100644 --- a/fs/btrfs/zstd.c +++ b/fs/btrfs/zstd.c @@ -710,14 +710,6 @@ static int zstd_decompress(struct list_head *ws, unsigned char *data_in, return ret; } -static unsigned int zstd_set_level(unsigned int level) -{ - if (!level) - return ZSTD_BTRFS_DEFAULT_LEVEL; - - return min_t(unsigned int, level, ZSTD_BTRFS_MAX_LEVEL); -} - const struct btrfs_compress_op btrfs_zstd_compress = { .init_workspace_manager = zstd_init_workspace_manager, .cleanup_workspace_manager = zstd_cleanup_workspace_manager, @@ -728,7 +720,6 @@ const struct btrfs_compress_op btrfs_zstd_compress = { .compress_pages = zstd_compress_pages, .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, }; -- 2.22.0
