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new helper: get_tree_keyed()

Browse source 
For vfs_get_keyed_super users.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-09-03 19:05:48 -04:00
parent 1dd9bc08cf
commit 533770cc0a
6 changed files with 20 additions and 9 deletions
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7
include/linux/fs_context.h
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@ -136,7 +136,7 @@ extern int vfs_get_tree(struct fs_context *fc);
extern void put_fs_context(struct fs_context *fc);
/*
* sget() wrapper to be called from the ->get_tree() op.
* sget() wrappers to be called from the ->get_tree() op.
*/
enum vfs_get_super_keying {
vfs_get_single_super, /* Only one such superblock may exist */
@ -147,12 +147,17 @@ extern int vfs_get_super(struct fs_context *fc,
enum vfs_get_super_keying keying,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc));
extern int get_tree_nodev(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc));
extern int get_tree_single(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc));
extern int get_tree_keyed(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc),
void *key);
extern const struct file_operations fscontext_fops;