diff mbox

[3/4] btrfs: constify buffers used by compression helpers

Message ID 83151b9cb8c34a742855715f7de55752f4c7a29e.1487348702.git.dsterba@suse.com (mailing list archive)
State Accepted
Headers show

Commit Message

David Sterba Feb. 17, 2017, 4:27 p.m. UTC 
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/compression.c | 2 +-
 fs/btrfs/compression.h | 2 +-
 fs/btrfs/lzo.c         | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 903c32c9eb22..c76312405f5c 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -1015,7 +1015,7 @@  void btrfs_exit_compress(void)
  *
  * total_out is the last byte of the buffer
  */
-int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
+int btrfs_decompress_buf2page(const char *buf, unsigned long buf_start,
 			      unsigned long total_out, u64 disk_start,
 			      struct bio *bio)
 {
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 09879579fbc8..1c700bb20b52 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -32,7 +32,7 @@  int btrfs_compress_pages(int type, struct address_space *mapping,
 			 unsigned long max_out);
 int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
 		     unsigned long start_byte, size_t srclen, size_t destlen);
-int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
+int btrfs_decompress_buf2page(const char *buf, unsigned long buf_start,
 			      unsigned long total_out, u64 disk_start,
 			      struct bio *bio);
 
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index 45d26980caf9..e074b85aa054 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -76,7 +76,7 @@  static inline void write_compress_length(char *buf, size_t len)
 	memcpy(buf, &dlen, LZO_LEN);
 }
 
-static inline size_t read_compress_length(char *buf)
+static inline size_t read_compress_length(const char *buf)
 {
 	__le32 dlen;