btrfs: constify pointer parameters where applicable

We can add const to many parameters, this is for clarity and minor
addition to safety. There are some minor effects, in the assembly
code and .ko measured on release config. This patch does not cover all
possible conversions.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/fs/btrfs/fs.h b/fs/btrfs/fs.h
index e6b1903f6c32..18e0d3539496 100644
--- a/fs/btrfs/fs.h
+++ b/fs/btrfs/fs.h
@@ -956,7 +956,7 @@ static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info)
 /*
  * Count how many fs_info->max_extent_size cover the @size
  */
-static inline u32 count_max_extents(struct btrfs_fs_info *fs_info, u64 size)
+static inline u32 count_max_extents(const struct btrfs_fs_info *fs_info, u64 size)
 {
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
 	if (!fs_info)
@@ -1017,7 +1017,7 @@ void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag,
 #define btrfs_test_opt(fs_info, opt)	((fs_info)->mount_opt & \
 					 BTRFS_MOUNT_##opt)
 
-static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
+static inline int btrfs_fs_closing(const struct btrfs_fs_info *fs_info)
 {
 	/* Do it this way so we only ever do one test_bit in the normal case. */
 	if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) {
@@ -1036,7 +1036,7 @@ static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
  * since setting and checking for SB_RDONLY in the superblock's flags is not
  * atomic.
  */
-static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info)
+static inline int btrfs_need_cleaner_sleep(const struct btrfs_fs_info *fs_info)
 {
 	return test_bit(BTRFS_FS_STATE_RO, &fs_info->fs_state) ||
 		btrfs_fs_closing(fs_info);
@@ -1057,7 +1057,7 @@ static inline void btrfs_wake_unfinished_drop(struct btrfs_fs_info *fs_info)
 
 #define EXPORT_FOR_TESTS
 
-static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
+static inline int btrfs_is_testing(const struct btrfs_fs_info *fs_info)
 {
 	return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
 }
@@ -1068,7 +1068,7 @@ void btrfs_test_destroy_inode(struct inode *inode);
 
 #define EXPORT_FOR_TESTS static
 
-static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
+static inline int btrfs_is_testing(const struct btrfs_fs_info *fs_info)
 {
 	return 0;
 }