lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mount options: add generic_show_options()

Browse Source 
Add a new s_options field to struct super_block.  Filesystems can save
mount options passed to them in mount or remount.  It is automatically
freed when the superblock is destroyed.

A new helper function, generic_show_options() is introduced, which uses
this field to display the mount options in /proc/mounts.

Another helper function, save_mount_options() may be used by
filesystems to save the options in the super block.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miklos Szeredi
2008-02-08 04:21:35 -08:00
committed by Linus Torvalds
parent f84e3f521e
commit b3b304a23a
3 changed files with 54 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/linux/fs.h
View File

@ -1038,6 +1038,12 @@ struct super_block {
* in /proc/mounts will be "type.subtype"
*/
char *s_subtype;
/*
* Saved mount options for lazy filesystems using
* generic_show_options()
*/
char *s_options;
};
extern struct timespec current_fs_time(struct super_block *sb);
@ -1970,6 +1976,9 @@ extern int __must_check inode_setattr(struct inode *, struct iattr *);
extern void file_update_time(struct file *file);
extern int generic_show_options(struct seq_file *m, struct vfsmount *mnt);
extern void save_mount_options(struct super_block *sb, char *options);
static inline ino_t parent_ino(struct dentry *dentry)
{
ino_t res;