diff options
Diffstat (limited to 'include/linux/mount.h')
| -rw-r--r-- | include/linux/mount.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/include/linux/mount.h b/include/linux/mount.h index ddd2cad4d..fcec95647 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -10,24 +10,40 @@ */ #ifndef _LINUX_MOUNT_H #define _LINUX_MOUNT_H +#ifdef __KERNEL__ struct vfsmount { - kdev_t mnt_dev; /* Device this applies to */ + struct dentry *mnt_mountpoint; /* dentry of mountpoint */ + struct dentry *mnt_root; /* root of the mounted tree */ + struct vfsmount *mnt_parent; /* fs we are mounted on */ + struct list_head mnt_instances; /* other vfsmounts of the same fs */ + struct list_head mnt_clash; /* those who are mounted on (other */ + /* instances) of the same dentry */ + struct super_block *mnt_sb; /* pointer to superblock */ + struct list_head mnt_mounts; /* list of children, anchored here */ + struct list_head mnt_child; /* and going through their mnt_child */ + atomic_t mnt_count; + char *mnt_devname; /* Name of device e.g. /dev/dsk/hda1 */ char *mnt_dirname; /* Name of directory mounted on */ - struct super_block *mnt_sb; /* pointer to superblock */ struct list_head mnt_list; }; -/* MOUNT_REWRITE: fill these */ static inline struct vfsmount *mntget(struct vfsmount *mnt) { + if (mnt) + atomic_inc(&mnt->mnt_count); return mnt; } static inline void mntput(struct vfsmount *mnt) { + if (mnt) { + if (atomic_dec_and_test(&mnt->mnt_count)) + BUG(); + } } +#endif #endif /* _LINUX_MOUNT_H */ |