btrfs: parameter constification in ioctl.c

Add const to function parameters that are not changed.

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

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index f3ce82d113bec9560489ec5927efb4f235be241c..5c26788f7e4f2d869560b5c123a90d65242336c2 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -118,8 +118,8 @@ struct btrfs_ioctl_encoded_io_args_32 {
 #endif
 
 /* Mask out flags that are inappropriate for the given type of inode. */
-static unsigned int btrfs_mask_fsflags_for_type(struct inode *inode,
-               unsigned int flags)
+static unsigned int btrfs_mask_fsflags_for_type(const struct inode *inode,
+                                               unsigned int flags)
 {
        if (S_ISDIR(inode->i_mode))
                return flags;
@@ -133,7 +133,7 @@ static unsigned int btrfs_mask_fsflags_for_type(struct inode *inode,
  * Export internal inode flags to the format expected by the FS_IOC_GETFLAGS
  * ioctl.
  */
-static unsigned int btrfs_inode_flags_to_fsflags(struct btrfs_inode *binode)
+static unsigned int btrfs_inode_flags_to_fsflags(const struct btrfs_inode *binode)
 {
        unsigned int iflags = 0;
        u32 flags = binode->flags;
@@ -219,7 +219,7 @@ static int check_fsflags(unsigned int old_flags, unsigned int flags)
        return 0;
 }
 
-static int check_fsflags_compatible(struct btrfs_fs_info *fs_info,
+static int check_fsflags_compatible(const struct btrfs_fs_info *fs_info,
                                    unsigned int flags)
 {
        if (btrfs_is_zoned(fs_info) && (flags & FS_NOCOW_FL))
@@ -248,7 +248,7 @@ static int btrfs_check_ioctl_vol_args2_subvol_name(const struct btrfs_ioctl_vol_
  */
 int btrfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
 {
-       struct btrfs_inode *binode = BTRFS_I(d_inode(dentry));
+       const struct btrfs_inode *binode = BTRFS_I(d_inode(dentry));
 
        fileattr_fill_flags(fa, btrfs_inode_flags_to_fsflags(binode));
        return 0;
@@ -404,7 +404,7 @@ update_flags:
        return ret;
 }
 
-static int btrfs_ioctl_getversion(struct inode *inode, int __user *arg)
+static int btrfs_ioctl_getversion(const struct inode *inode, int __user *arg)
 {
        return put_user(inode->i_generation, arg);
 }
@@ -476,7 +476,7 @@ static noinline int btrfs_ioctl_fitrim(struct btrfs_fs_info *fs_info,
  * Calculate the number of transaction items to reserve for creating a subvolume
  * or snapshot, not including the inode, directory entries, or parent directory.
  */
-static unsigned int create_subvol_num_items(struct btrfs_qgroup_inherit *inherit)
+static unsigned int create_subvol_num_items(const struct btrfs_qgroup_inherit *inherit)
 {
        /*
         * 1 to add root block
@@ -879,7 +879,7 @@ static int btrfs_may_delete(struct mnt_idmap *idmap,
 
 /* copy of may_create in fs/namei.c() */
 static inline int btrfs_may_create(struct mnt_idmap *idmap,
-                                  struct inode *dir, struct dentry *child)
+                                  struct inode *dir, const struct dentry *child)
 {
        if (d_really_is_positive(child))
                return -EEXIST;
@@ -1448,8 +1448,8 @@ out:
        return ret;
 }
 
-static noinline int key_in_sk(struct btrfs_key *key,
-                             struct btrfs_ioctl_search_key *sk)
+static noinline int key_in_sk(const struct btrfs_key *key,
+                             const struct btrfs_ioctl_search_key *sk)
 {
        struct btrfs_key test;
        int ret;
@@ -1474,7 +1474,7 @@ static noinline int key_in_sk(struct btrfs_key *key,
 
 static noinline int copy_to_sk(struct btrfs_path *path,
                               struct btrfs_key *key,
-                              struct btrfs_ioctl_search_key *sk,
+                              const struct btrfs_ioctl_search_key *sk,
                               u64 *buf_size,
                               char __user *ubuf,
                               unsigned long *sk_offset,
@@ -2764,7 +2764,7 @@ out_free:
        return ret;
 }
 
-static long btrfs_ioctl_fs_info(struct btrfs_fs_info *fs_info,
+static long btrfs_ioctl_fs_info(const struct btrfs_fs_info *fs_info,
                                void __user *arg)
 {
        struct btrfs_ioctl_fs_info_args *fi_args;
@@ -2818,7 +2818,7 @@ static long btrfs_ioctl_fs_info(struct btrfs_fs_info *fs_info,
        return ret;
 }
 
-static long btrfs_ioctl_dev_info(struct btrfs_fs_info *fs_info,
+static long btrfs_ioctl_dev_info(const struct btrfs_fs_info *fs_info,
                                 void __user *arg)
 {
        BTRFS_DEV_LOOKUP_ARGS(args);
@@ -4249,7 +4249,7 @@ static int btrfs_ioctl_get_features(struct btrfs_fs_info *fs_info,
        return 0;
 }
 
-static int check_feature_bits(struct btrfs_fs_info *fs_info,
+static int check_feature_bits(const struct btrfs_fs_info *fs_info,
                              enum btrfs_feature_set set,
                              u64 change_mask, u64 flags, u64 supported_flags,
                              u64 safe_set, u64 safe_clear)