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2917f74102
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>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_DIR_ITEM_H
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#define BTRFS_DIR_ITEM_H
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#include <linux/types.h>
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#include <linux/crc32c.h>
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struct fscrypt_str;
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struct btrfs_fs_info;
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struct btrfs_key;
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struct btrfs_path;
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struct btrfs_root;
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struct btrfs_trans_handle;
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int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
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const struct fscrypt_str *name);
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int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
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const struct fscrypt_str *name, struct btrfs_inode *dir,
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const struct btrfs_key *location, u8 type, u64 index);
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struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path, u64 dir,
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const struct fscrypt_str *name, int mod);
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struct btrfs_dir_item *btrfs_lookup_dir_index_item(
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struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path, u64 dir,
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u64 index, const struct fscrypt_str *name, int mod);
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struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
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struct btrfs_path *path, u64 dirid,
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const struct fscrypt_str *name);
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int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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const struct btrfs_dir_item *di);
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int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path, u64 objectid,
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const char *name, u16 name_len,
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const void *data, u16 data_len);
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struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path, u64 dir,
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const char *name, u16 name_len,
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int mod);
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struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
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const struct btrfs_path *path,
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const char *name,
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int name_len);
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static inline u64 btrfs_name_hash(const char *name, int len)
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{
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return crc32c((u32)~1, name, len);
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}
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#endif
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