diff options
| author | Michele Dionisio <michele.dionisio@gmail.com> | 2019-05-15 23:02:02 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2019-07-08 19:43:53 +0200 |
| commit | eeabb9866e4ccce55d875cad140f9bf7c7ba1d66 (patch) | |
| tree | 2cb31e7a2c643f8b03a9abadb27e6fef3509c485 /fs/ubifs/compress.c | |
| parent | ubifs: support offline signed images (diff) | |
| download | linux-eeabb9866e4ccce55d875cad140f9bf7c7ba1d66.tar.xz linux-eeabb9866e4ccce55d875cad140f9bf7c7ba1d66.zip | |
ubifs: Add support for zstd compression.
zstd shows a good compression rate and is faster than lzo,
also on slow ARM cores.
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Michele Dionisio <michele.dionisio@gmail.com>
[rw: rewrote commit message]
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/compress.c')
| -rw-r--r-- | fs/ubifs/compress.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/fs/ubifs/compress.c b/fs/ubifs/compress.c index 99c53ad11e93..3a92e6af69b2 100644 --- a/fs/ubifs/compress.c +++ b/fs/ubifs/compress.c @@ -59,6 +59,24 @@ static struct ubifs_compressor zlib_compr = { }; #endif +#ifdef CONFIG_UBIFS_FS_ZSTD +static DEFINE_MUTEX(zstd_enc_mutex); +static DEFINE_MUTEX(zstd_dec_mutex); + +static struct ubifs_compressor zstd_compr = { + .compr_type = UBIFS_COMPR_ZSTD, + .comp_mutex = &zstd_enc_mutex, + .decomp_mutex = &zstd_dec_mutex, + .name = "zstd", + .capi_name = "zstd", +}; +#else +static struct ubifs_compressor zstd_compr = { + .compr_type = UBIFS_COMPR_ZSTD, + .name = "zstd", +}; +#endif + /* All UBIFS compressors */ struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT]; @@ -216,13 +234,19 @@ int __init ubifs_compressors_init(void) if (err) return err; - err = compr_init(&zlib_compr); + err = compr_init(&zstd_compr); if (err) goto out_lzo; + err = compr_init(&zlib_compr); + if (err) + goto out_zstd; + ubifs_compressors[UBIFS_COMPR_NONE] = &none_compr; return 0; +out_zstd: + compr_exit(&zstd_compr); out_lzo: compr_exit(&lzo_compr); return err; @@ -235,4 +259,5 @@ void ubifs_compressors_exit(void) { compr_exit(&lzo_compr); compr_exit(&zlib_compr); + compr_exit(&zstd_compr); } |