Commit 0a434e0a authored by Lasse Collin's avatar Lasse Collin Committed by Gao Xiang
Browse files

lib/xz, lib/decompress_unxz.c: Fix spelling in comments 

uncompressible -> incompressible
non-splitted -> non-split

Link: https://lore.kernel.org/r/20211010213145.17462-6-xiang@kernel.org


Signed-off-by: default avatarLasse Collin <lasse.collin@tukaani.org>
Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
parent aaa2975f

lib/decompress_unxz.c

+5 −5
Original line number Diff line number Diff line
@@ -20,8 +20,8 @@ 
 *

 * The worst case for in-place decompression is that the beginning of

 * the file is compressed extremely well, and the rest of the file is

 * uncompressible. Thus, we must look for worst-case expansion when the

 * compressor is encoding uncompressible data.

 * incompressible. Thus, we must look for worst-case expansion when the

 * compressor is encoding incompressible data.

 *

 * The structure of the .xz file in case of a compressed kernel is as follows.

 * Sizes (as bytes) of the fields are in parenthesis.
@@ -58,7 +58,7 @@ 
 * uncompressed size of the payload is in practice never less than the

 * payload size itself. The LZMA2 format would allow uncompressed size

 * to be less than the payload size, but no sane compressor creates such

 * files. LZMA2 supports storing uncompressible data in uncompressed form,

 * files. LZMA2 supports storing incompressible data in uncompressed form,

 * so there's never a need to create payloads whose uncompressed size is

 * smaller than the compressed size.

 *
@@ -167,8 +167,8 @@ 
 * memeq and memzero are not used much and any remotely sane implementation

 * is fast enough. memcpy/memmove speed matters in multi-call mode, but

 * the kernel image is decompressed in single-call mode, in which only

 * memmove speed can matter and only if there is a lot of uncompressible data

 * (LZMA2 stores uncompressible chunks in uncompressed form). Thus, the

 * memmove speed can matter and only if there is a lot of incompressible data

 * (LZMA2 stores incompressible chunks in uncompressed form). Thus, the

 * functions below should just be kept small; it's probably not worth

 * optimizing for speed.

 */

lib/xz/xz_dec_lzma2.c

+1 −1
Original line number Diff line number Diff line
@@ -520,7 +520,7 @@ static __always_inline void rc_normalize(struct rc_dec *rc) 
 * functions so that the compiler is supposed to be able to more easily avoid

 * an extra branch. In this particular version of the LZMA decoder, this

 * doesn't seem to be a good idea (tested with GCC 3.3.6, 3.4.6, and 4.3.3

 * on x86). Using a non-splitted version results in nicer looking code too.

 * on x86). Using a non-split version results in nicer looking code too.

 *

 * NOTE: This must return an int. Do not make it return a bool or the speed

 * of the code generated by GCC 3.x decreases 10-15 %. (GCC 4.3 doesn't care,