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authorDavid Sterba <dsterba@suse.com>2022-11-07 17:30:21 +0100
committerDavid Sterba <dsterba@suse.com>2022-12-05 18:00:55 +0100
commit3e09b5b2293f21e6e28929b6bbb73833678bfdd1 (patch)
tree42a3de25723bc151c4903d046e1f25147acd017f /fs/btrfs/compression.c
parentad3daf1c3f5bcbba49a302d8d0e46467556bf6f3 (diff)
btrfs: constify input buffer parameter in compression code
The input buffers passed down to compression must never be changed, switch type to u8 as it's a raw byte buffer and use const. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/compression.c')
-rw-r--r--fs/btrfs/compression.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 42e6dde2ad59..30adf430241e 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -119,7 +119,7 @@ static int compression_decompress_bio(struct list_head *ws,
}
static int compression_decompress(int type, struct list_head *ws,
- unsigned char *data_in, struct page *dest_page,
+ const u8 *data_in, struct page *dest_page,
unsigned long start_byte, size_t srclen, size_t destlen)
{
switch (type) {
@@ -1232,7 +1232,7 @@ static int btrfs_decompress_bio(struct compressed_bio *cb)
* single page, and we want to read a single page out of it.
* start_byte tells us the offset into the compressed data we're interested in
*/
-int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
+int btrfs_decompress(int type, const u8 *data_in, struct page *dest_page,
unsigned long start_byte, size_t srclen, size_t destlen)
{
struct list_head *workspace;