Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci

[~andy/linux] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index b2e4b6f639e404c47eb275c1487f40b934da3121..7aacf31418fed291df3591c07ef252a26aa4c62c 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1428,6 +1428,7 @@ struct super_block {
 #else
        struct list_head        s_files;
 #endif
+       struct list_head        s_mounts;       /* list of mounts; _not_ for fs use */
        /* s_dentry_lru, s_nr_dentry_unused protected by dcache.c lru locks */
        struct list_head        s_dentry_lru;   /* unused dentry lru */
        int                     s_nr_dentry_unused;     /* # of dentry on lru */
@@ -1481,6 +1482,12 @@ struct super_block {
        int cleancache_poolid;
 
        struct shrinker s_shrink;       /* per-sb shrinker handle */
+
+       /* Number of inodes with nlink == 0 but still referenced */
+       atomic_long_t s_remove_count;
+
+       /* Being remounted read-only */
+       int s_readonly_remount;
 };
 
 /* superblock cache pruning functions */
@@ -1672,9 +1679,9 @@ struct super_operations {
        int (*remount_fs) (struct super_block *, int *, char *);
        void (*umount_begin) (struct super_block *);
 
-       int (*show_options)(struct seq_file *, struct vfsmount *);
-       int (*show_devname)(struct seq_file *, struct vfsmount *);
-       int (*show_path)(struct seq_file *, struct vfsmount *);
+       int (*show_options)(struct seq_file *, struct dentry *);
+       int (*show_devname)(struct seq_file *, struct dentry *);
+       int (*show_path)(struct seq_file *, struct dentry *);
        int (*show_stats)(struct seq_file *, struct dentry *);
 #ifdef CONFIG_QUOTA
        ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t);
@@ -1764,31 +1771,10 @@ static inline void mark_inode_dirty_sync(struct inode *inode)
        __mark_inode_dirty(inode, I_DIRTY_SYNC);
 }
 
-/**
- * set_nlink - directly set an inode's link count
- * @inode: inode
- * @nlink: new nlink (should be non-zero)
- *
- * This is a low-level filesystem helper to replace any
- * direct filesystem manipulation of i_nlink.
- */
-static inline void set_nlink(struct inode *inode, unsigned int nlink)
-{
-       inode->__i_nlink = nlink;
-}
-
-/**
- * inc_nlink - directly increment an inode's link count
- * @inode: inode
- *
- * This is a low-level filesystem helper to replace any
- * direct filesystem manipulation of i_nlink.  Currently,
- * it is only here for parity with dec_nlink().
- */
-static inline void inc_nlink(struct inode *inode)
-{
-       inode->__i_nlink++;
-}
+extern void inc_nlink(struct inode *inode);
+extern void drop_nlink(struct inode *inode);
+extern void clear_nlink(struct inode *inode);
+extern void set_nlink(struct inode *inode, unsigned int nlink);
 
 static inline void inode_inc_link_count(struct inode *inode)
 {
@@ -1796,35 +1782,6 @@ static inline void inode_inc_link_count(struct inode *inode)
        mark_inode_dirty(inode);
 }
 
-/**
- * drop_nlink - directly drop an inode's link count
- * @inode: inode
- *
- * This is a low-level filesystem helper to replace any
- * direct filesystem manipulation of i_nlink.  In cases
- * where we are attempting to track writes to the
- * filesystem, a decrement to zero means an imminent
- * write when the file is truncated and actually unlinked
- * on the filesystem.
- */
-static inline void drop_nlink(struct inode *inode)
-{
-       inode->__i_nlink--;
-}
-
-/**
- * clear_nlink - directly zero an inode's link count
- * @inode: inode
- *
- * This is a low-level filesystem helper to replace any
- * direct filesystem manipulation of i_nlink.  See
- * drop_nlink() for why we care about i_nlink hitting zero.
- */
-static inline void clear_nlink(struct inode *inode)
-{
-       inode->__i_nlink = 0;
-}
-
 static inline void inode_dec_link_count(struct inode *inode)
 {
        drop_nlink(inode);
@@ -2193,8 +2150,6 @@ extern const struct file_operations read_pipefifo_fops;
 extern const struct file_operations write_pipefifo_fops;
 extern const struct file_operations rdwr_pipefifo_fops;
 
-extern int fs_may_remount_ro(struct super_block *);
-
 #ifdef CONFIG_BLOCK
 /*
  * return READ, READA, or WRITE
@@ -2592,7 +2547,7 @@ extern void setattr_copy(struct inode *inode, const struct iattr *attr);
 
 extern void file_update_time(struct file *file);
 
-extern int generic_show_options(struct seq_file *m, struct vfsmount *mnt);
+extern int generic_show_options(struct seq_file *m, struct dentry *root);
 extern void save_mount_options(struct super_block *sb, char *options);
 extern void replace_mount_options(struct super_block *sb, char *options);