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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/fs/internal.h
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@@ -1,12 +1,8 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /* fs/ internal definitions
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  *
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  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
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  * Written by David Howells (dhowells@redhat.com)
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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7
 
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 struct super_block;
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@@ -17,6 +13,8 @@
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 struct path;
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 struct mount;
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 struct shrink_control;
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+struct fs_context;
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+struct user_namespace;
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 /*
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  * block_dev.c
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@@ -25,7 +23,9 @@
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 extern void __init bdev_cache_init(void);
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 extern int __sync_blockdev(struct block_device *bdev, int wait);
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-
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+void iterate_bdevs(void (*)(struct block_device *, void *), void *);
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+void emergency_thaw_bdev(struct super_block *sb);
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+void bd_forget(struct inode *inode);
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 #else
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 static inline void bdev_cache_init(void)
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 {
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@@ -35,16 +35,24 @@
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 {
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 	return 0;
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 }
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-#endif
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+static inline void iterate_bdevs(void (*f)(struct block_device *, void *),
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+		void *arg)
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+{
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+}
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+static inline int emergency_thaw_bdev(struct super_block *sb)
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+{
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+	return 0;
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+}
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+static inline void bd_forget(struct inode *inode)
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+{
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+}
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+#endif /* CONFIG_BLOCK */
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 /*
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  * buffer.c
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  */
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-extern void guard_bio_eod(int rw, struct bio *bio);
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 extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
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 		get_block_t *get_block, struct iomap *iomap);
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-int __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,
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-		struct page *page);
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 /*
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  * char_dev.c
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@@ -52,25 +60,29 @@
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 extern void __init chrdev_init(void);
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 /*
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+ * fs_context.c
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+ */
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+extern const struct fs_context_operations legacy_fs_context_ops;
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+extern int parse_monolithic_mount_data(struct fs_context *, void *);
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+extern void vfs_clean_context(struct fs_context *fc);
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+extern int finish_clean_context(struct fs_context *fc);
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+
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+/*
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  * namei.c
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  */
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-extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
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-long do_mknodat(int dfd, const char __user *filename, umode_t mode,
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-		unsigned int dev);
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-long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
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-long do_rmdir(int dfd, const char __user *pathname);
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+extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
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+			   struct path *path, struct path *root);
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+extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
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+			   const char *, unsigned int, struct path *);
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+long do_rmdir(int dfd, struct filename *name);
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 long do_unlinkat(int dfd, struct filename *name);
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-long do_symlinkat(const char __user *oldname, int newdfd,
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-		  const char __user *newname);
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-int do_linkat(int olddfd, const char __user *oldname, int newdfd,
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-	      const char __user *newname, int flags);
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+int may_linkat(struct path *link);
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+int do_renameat2(int olddfd, struct filename *oldname, int newdfd,
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+		 struct filename *newname, unsigned int flags);
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 /*
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  * namespace.c
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  */
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-extern void *copy_mount_options(const void __user *);
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-extern char *copy_mount_string(const void __user *);
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-
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 extern struct vfsmount *lookup_mnt(const struct path *);
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 extern int finish_automount(struct vfsmount *, struct path *);
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@@ -80,6 +92,12 @@
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 extern int __mnt_want_write_file(struct file *);
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 extern void __mnt_drop_write_file(struct file *);
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+
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+extern void dissolve_on_fput(struct vfsmount *);
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+
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+int path_mount(const char *dev_name, struct path *path,
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+		const char *type_page, unsigned long flags, void *data_page);
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+int path_umount(struct path *path, int flags);
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 /*
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  * fs_struct.c
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@@ -95,13 +113,10 @@
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 /*
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  * super.c
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  */
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-extern int do_remount_sb(struct super_block *, int, void *, int);
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-extern int do_remount_sb2(struct vfsmount *, struct super_block *, int,
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-								void *, int);
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+extern int reconfigure_super(struct fs_context *);
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 extern bool trylock_super(struct super_block *sb);
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-extern struct dentry *mount_fs(struct file_system_type *,
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-			       int, const char *, struct vfsmount *, void *);
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 extern struct super_block *user_get_super(dev_t);
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+extern bool mount_capable(struct fs_context *);
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 /*
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  * open.c
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@@ -117,13 +132,15 @@
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 		const struct open_flags *op);
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 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
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 		const char *, const struct open_flags *);
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+extern struct open_how build_open_how(int flags, umode_t mode);
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+extern int build_open_flags(const struct open_how *how, struct open_flags *op);
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+extern int __close_fd_get_file(unsigned int fd, struct file **res);
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 long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
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-long do_faccessat(int dfd, const char __user *filename, int mode);
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-int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
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+int chmod_common(const struct path *path, umode_t mode);
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 int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
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 		int flag);
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-
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+int chown_common(const struct path *path, uid_t user, gid_t group);
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 extern int vfs_open(const struct path *, struct file *);
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 /*
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@@ -132,22 +149,26 @@
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 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
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 extern void inode_add_lru(struct inode *inode);
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 extern int dentry_needs_remove_privs(struct dentry *dentry);
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+bool in_group_or_capable(const struct inode *inode, kgid_t gid);
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+void lock_two_inodes(struct inode *inode1, struct inode *inode2,
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+		     unsigned subclass1, unsigned subclass2);
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 /*
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  * fs-writeback.c
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  */
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-extern void inode_io_list_del(struct inode *inode);
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-
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 extern long get_nr_dirty_inodes(void);
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 extern int invalidate_inodes(struct super_block *, bool);
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 /*
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  * dcache.c
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  */
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-extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
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 extern int d_set_mounted(struct dentry *dentry);
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 extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
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 extern struct dentry *d_alloc_cursor(struct dentry *);
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+extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
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+extern char *simple_dname(struct dentry *, char *, int);
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+extern void dput_to_list(struct dentry *, struct list_head *);
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+extern void shrink_dentry_list(struct list_head *);
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 /*
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  * read_write.c
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@@ -170,21 +191,16 @@
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  */
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 extern const struct dentry_operations ns_dentry_operations;
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-/*
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- * fs/ioctl.c
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- */
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-extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
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-		    unsigned long arg);
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-
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-/*
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- * iomap support:
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- */
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-typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
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-		void *data, struct iomap *iomap);
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-
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-loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
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-		unsigned flags, const struct iomap_ops *ops, void *data,
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-		iomap_actor_t actor);
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-
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 /* direct-io.c: */
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 int sb_init_dio_done_wq(struct super_block *sb);
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+
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+/*
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+ * fs/stat.c:
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+ */
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+int do_statx(int dfd, const char __user *filename, unsigned flags,
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+	     unsigned int mask, struct statx __user *buffer);
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+
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+/*
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+ * fs/attr.c
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+ */
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+int setattr_should_drop_sgid(const struct inode *inode);