diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mount.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mount.h b/include/linux/mount.h index 2eecd2c8c76..8c8e94369ac 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/list.h> +#include <linux/nodemask.h> #include <linux/spinlock.h> #include <asm/atomic.h> @@ -30,6 +31,7 @@ struct mnt_namespace; #define MNT_RELATIME 0x20 #define MNT_SHRINKABLE 0x100 +#define MNT_IMBALANCED_WRITE_COUNT 0x200 /* just for debugging */ #define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */ #define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */ @@ -62,6 +64,11 @@ struct vfsmount { int mnt_expiry_mark; /* true if marked for expiry */ int mnt_pinned; int mnt_ghosts; + /* + * This value is not stable unless all of the mnt_writers[] spinlocks + * are held, and all mnt_writer[]s on this mount have 0 as their ->count + */ + atomic_t __mnt_writers; }; static inline struct vfsmount *mntget(struct vfsmount *mnt) |