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pstore: constify pstore_zbackend structures 

The references of pstore_zbackend structures are stored into the
pointer zbackend of type struct pstore_zbackend. The pointer zbackend
can be made const as it is only dereferenced. After making this change
the pstore_zbackend structures whose references are stored into the
pointer zbackend can be made const too.

File size before:
   text	   data	    bss	    dec	    hex	filename
   4817	    541	    172	   5530	   159a	fs/pstore/platform.o

File size after:
   text	   data	    bss	    dec	    hex	filename
   4865	    477	    172	   5514	   158a	fs/pstore/platform.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Bhumika Goyal 2017-02-19 15:07:53 +05:30 committed by Kees Cook
parent c1ae3cfa0e
commit 3faf93543c
1 changed files with 4 additions and 4 deletions
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8
fs/pstore/platform.c
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@ -267,7 +267,7 @@ static void free_zlib(void)
big_oops_buf_sz = 0;
}
static struct pstore_zbackend backend_zlib = {
static const struct pstore_zbackend backend_zlib = {
.compress = compress_zlib,
.decompress = decompress_zlib,
.allocate = allocate_zlib,
@ -328,7 +328,7 @@ static void free_lzo(void)
big_oops_buf_sz = 0;
}
static struct pstore_zbackend backend_lzo = {
static const struct pstore_zbackend backend_lzo = {
.compress = compress_lzo,
.decompress = decompress_lzo,
.allocate = allocate_lzo,
@ -393,7 +393,7 @@ static void free_lz4(void)
big_oops_buf_sz = 0;
}
static struct pstore_zbackend backend_lz4 = {
static const struct pstore_zbackend backend_lz4 = {
.compress = compress_lz4,
.decompress = decompress_lz4,
.allocate = allocate_lz4,
@ -402,7 +402,7 @@ static struct pstore_zbackend backend_lz4 = {
};
#endif
static struct pstore_zbackend *zbackend =
static const struct pstore_zbackend *zbackend =
#if defined(CONFIG_PSTORE_ZLIB_COMPRESS)
&backend_zlib;
#elif defined(CONFIG_PSTORE_LZO_COMPRESS)