diff options
| author | Miklos Szeredi <mszeredi@suse.cz> | 2008-02-08 04:21:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:39 -0800 |
| commit | b3b304a23a8f7ae4c40c7b512ee45afae0010a70 (patch) | |
| tree | 04ada9ae35e912b6c3d56c0aefdc297216f2e0a5 /include | |
| parent | f84e3f521e1449300e0fdc314b7b43b418a66dc3 (diff) | |
mount options: add generic_show_options()
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 3db22fc2249..cb3a9001f3b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -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; |