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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 15:34:18 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 15:34:18 +0900
commit9bc9ccd7db1c9f043f75380b5a5b94912046a60e (patch)
treedd0a1b3396ae9414f668b0110cc39d11268ad3ed /include
parentf0230294271f511b41797305b685365a9e569a09 (diff)
parentbdd3536618443809d18868563eeafa63b9d29603 (diff)
downloadlinux-linaro-stable-9bc9ccd7db1c9f043f75380b5a5b94912046a60e.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro: "All kinds of stuff this time around; some more notable parts: - RCU'd vfsmounts handling - new primitives for coredump handling - files_lock is gone - Bruce's delegations handling series - exportfs fixes plus misc stuff all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (101 commits) ecryptfs: ->f_op is never NULL locks: break delegations on any attribute modification locks: break delegations on link locks: break delegations on rename locks: helper functions for delegation breaking locks: break delegations on unlink namei: minor vfs_unlink cleanup locks: implement delegations locks: introduce new FL_DELEG lock flag vfs: take i_mutex on renamed file vfs: rename I_MUTEX_QUOTA now that it's not used for quotas vfs: don't use PARENT/CHILD lock classes for non-directories vfs: pull ext4's double-i_mutex-locking into common code exportfs: fix quadratic behavior in filehandle lookup exportfs: better variable name exportfs: move most of reconnect_path to helper function exportfs: eliminate unused "noprogress" counter exportfs: stop retrying once we race with rename/remove exportfs: clear DISCONNECTED on all parents sooner exportfs: more detailed comment for path_reconnect ...
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/siginfo.h2
-rw-r--r--include/linux/anon_inodes.h3
-rw-r--r--include/linux/binfmts.h3
-rw-r--r--include/linux/compat.h2
-rw-r--r--include/linux/coredump.h10
-rw-r--r--include/linux/dcache.h104
-rw-r--r--include/linux/elf.h6
-rw-r--r--include/linux/elfcore.h7
-rw-r--r--include/linux/fs.h106
-rw-r--r--include/linux/lglock.h10
-rw-r--r--include/linux/mount.h2
-rw-r--r--include/linux/namei.h2
-rw-r--r--include/linux/pid_namespace.h1
13 files changed, 186 insertions, 72 deletions
diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h
index b685d3bd32e2..3d1a3af5cf59 100644
--- a/include/asm-generic/siginfo.h
+++ b/include/asm-generic/siginfo.h
@@ -32,6 +32,6 @@ static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
#endif
-extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from);
+extern int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
#endif
diff --git a/include/linux/anon_inodes.h b/include/linux/anon_inodes.h
index cf573c22b81e..8013a45242fe 100644
--- a/include/linux/anon_inodes.h
+++ b/include/linux/anon_inodes.h
@@ -13,9 +13,6 @@ struct file_operations;
struct file *anon_inode_getfile(const char *name,
const struct file_operations *fops,
void *priv, int flags);
-struct file *anon_inode_getfile_private(const char *name,
- const struct file_operations *fops,
- void *priv, int flags);
int anon_inode_getfd(const char *name, const struct file_operations *fops,
void *priv, int flags);
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index e8112ae50531..790d3305a5a7 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -56,11 +56,12 @@ struct linux_binprm {
/* Function parameter for binfmt->coredump */
struct coredump_params {
- siginfo_t *siginfo;
+ const siginfo_t *siginfo;
struct pt_regs *regs;
struct file *file;
unsigned long limit;
unsigned long mm_flags;
+ loff_t written;
};
/*
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 345da00a86e0..78cdf51ff5ba 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -362,7 +362,7 @@ long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
unsigned long bitmap_size);
int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
-int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
+int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
int get_compat_sigevent(struct sigevent *event,
const struct compat_sigevent __user *u_event);
long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index a98f1ca60407..d016a121a8c4 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -10,12 +10,14 @@
* These are the only things you should do on a core-file: use only these
* functions to write out all the necessary info.
*/
-extern int dump_write(struct file *file, const void *addr, int nr);
-extern int dump_seek(struct file *file, loff_t off);
+struct coredump_params;
+extern int dump_skip(struct coredump_params *cprm, size_t nr);
+extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
+extern int dump_align(struct coredump_params *cprm, int align);
#ifdef CONFIG_COREDUMP
-extern void do_coredump(siginfo_t *siginfo);
+extern void do_coredump(const siginfo_t *siginfo);
#else
-static inline void do_coredump(siginfo_t *siginfo) {}
+static inline void do_coredump(const siginfo_t *siginfo) {}
#endif
#endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 59066e0b4ff1..57e87e749a48 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -169,13 +169,13 @@ struct dentry_operations {
*/
/* d_flags entries */
-#define DCACHE_OP_HASH 0x0001
-#define DCACHE_OP_COMPARE 0x0002
-#define DCACHE_OP_REVALIDATE 0x0004
-#define DCACHE_OP_DELETE 0x0008
-#define DCACHE_OP_PRUNE 0x0010
+#define DCACHE_OP_HASH 0x00000001
+#define DCACHE_OP_COMPARE 0x00000002
+#define DCACHE_OP_REVALIDATE 0x00000004
+#define DCACHE_OP_DELETE 0x00000008
+#define DCACHE_OP_PRUNE 0x00000010
-#define DCACHE_DISCONNECTED 0x0020
+#define DCACHE_DISCONNECTED 0x00000020
/* This dentry is possibly not currently connected to the dcache tree, in
* which case its parent will either be itself, or will have this flag as
* well. nfsd will not use a dentry with this bit set, but will first
@@ -186,30 +186,38 @@ struct dentry_operations {
* dentry into place and return that dentry rather than the passed one,
* typically using d_splice_alias. */
-#define DCACHE_REFERENCED 0x0040 /* Recently used, don't discard. */
-#define DCACHE_RCUACCESS 0x0080 /* Entry has ever been RCU-visible */
+#define DCACHE_REFERENCED 0x00000040 /* Recently used, don't discard. */
+#define DCACHE_RCUACCESS 0x00000080 /* Entry has ever been RCU-visible */
-#define DCACHE_CANT_MOUNT 0x0100
-#define DCACHE_GENOCIDE 0x0200
-#define DCACHE_SHRINK_LIST 0x0400
+#define DCACHE_CANT_MOUNT 0x00000100
+#define DCACHE_GENOCIDE 0x00000200
+#define DCACHE_SHRINK_LIST 0x00000400
-#define DCACHE_OP_WEAK_REVALIDATE 0x0800
+#define DCACHE_OP_WEAK_REVALIDATE 0x00000800
-#define DCACHE_NFSFS_RENAMED 0x1000
+#define DCACHE_NFSFS_RENAMED 0x00001000
/* this dentry has been "silly renamed" and has to be deleted on the last
* dput() */
-#define DCACHE_COOKIE 0x2000 /* For use by dcookie subsystem */
-#define DCACHE_FSNOTIFY_PARENT_WATCHED 0x4000
+#define DCACHE_COOKIE 0x00002000 /* For use by dcookie subsystem */
+#define DCACHE_FSNOTIFY_PARENT_WATCHED 0x00004000
/* Parent inode is watched by some fsnotify listener */
-#define DCACHE_MOUNTED 0x10000 /* is a mountpoint */
-#define DCACHE_NEED_AUTOMOUNT 0x20000 /* handle automount on this dir */
-#define DCACHE_MANAGE_TRANSIT 0x40000 /* manage transit from this dirent */
+#define DCACHE_DENTRY_KILLED 0x00008000
+
+#define DCACHE_MOUNTED 0x00010000 /* is a mountpoint */
+#define DCACHE_NEED_AUTOMOUNT 0x00020000 /* handle automount on this dir */
+#define DCACHE_MANAGE_TRANSIT 0x00040000 /* manage transit from this dirent */
#define DCACHE_MANAGED_DENTRY \
(DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)
-#define DCACHE_LRU_LIST 0x80000
-#define DCACHE_DENTRY_KILLED 0x100000
+#define DCACHE_LRU_LIST 0x00080000
+
+#define DCACHE_ENTRY_TYPE 0x00700000
+#define DCACHE_MISS_TYPE 0x00000000 /* Negative dentry */
+#define DCACHE_DIRECTORY_TYPE 0x00100000 /* Normal directory */
+#define DCACHE_AUTODIR_TYPE 0x00200000 /* Lookupless directory (presumed automount) */
+#define DCACHE_SYMLINK_TYPE 0x00300000 /* Symlink */
+#define DCACHE_FILE_TYPE 0x00400000 /* Other file type */
extern seqlock_t rename_lock;
@@ -224,6 +232,7 @@ static inline int dname_external(const struct dentry *dentry)
extern void d_instantiate(struct dentry *, struct inode *);
extern struct dentry * d_instantiate_unique(struct dentry *, struct inode *);
extern struct dentry * d_materialise_unique(struct dentry *, struct inode *);
+extern int d_instantiate_no_diralias(struct dentry *, struct inode *);
extern void __d_drop(struct dentry *dentry);
extern void d_drop(struct dentry *dentry);
extern void d_delete(struct dentry *);
@@ -393,6 +402,61 @@ static inline bool d_mountpoint(const struct dentry *dentry)
return dentry->d_flags & DCACHE_MOUNTED;
}
+/*
+ * Directory cache entry type accessor functions.
+ */
+static inline void __d_set_type(struct dentry *dentry, unsigned type)
+{
+ dentry->d_flags = (dentry->d_flags & ~DCACHE_ENTRY_TYPE) | type;
+}
+
+static inline void __d_clear_type(struct dentry *dentry)
+{
+ __d_set_type(dentry, DCACHE_MISS_TYPE);
+}
+
+static inline void d_set_type(struct dentry *dentry, unsigned type)
+{
+ spin_lock(&dentry->d_lock);
+ __d_set_type(dentry, type);
+ spin_unlock(&dentry->d_lock);
+}
+
+static inline unsigned __d_entry_type(const struct dentry *dentry)
+{
+ return dentry->d_flags & DCACHE_ENTRY_TYPE;
+}
+
+static inline bool d_is_directory(const struct dentry *dentry)
+{
+ return __d_entry_type(dentry) == DCACHE_DIRECTORY_TYPE;
+}
+
+static inline bool d_is_autodir(const struct dentry *dentry)
+{
+ return __d_entry_type(dentry) == DCACHE_AUTODIR_TYPE;
+}
+
+static inline bool d_is_symlink(const struct dentry *dentry)
+{
+ return __d_entry_type(dentry) == DCACHE_SYMLINK_TYPE;
+}
+
+static inline bool d_is_file(const struct dentry *dentry)
+{
+ return __d_entry_type(dentry) == DCACHE_FILE_TYPE;
+}
+
+static inline bool d_is_negative(const struct dentry *dentry)
+{
+ return __d_entry_type(dentry) == DCACHE_MISS_TYPE;
+}
+
+static inline bool d_is_positive(const struct dentry *dentry)
+{
+ return !d_is_negative(dentry);
+}
+
extern int sysctl_vfs_cache_pressure;
static inline unsigned long vfs_pressure_ratio(unsigned long val)
diff --git a/include/linux/elf.h b/include/linux/elf.h
index 40a3c0e01b2b..67a5fa7830c4 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -39,13 +39,13 @@ extern Elf64_Dyn _DYNAMIC [];
/* Optional callbacks to write extra ELF notes. */
struct file;
+struct coredump_params;
#ifndef ARCH_HAVE_EXTRA_ELF_NOTES
static inline int elf_coredump_extra_notes_size(void) { return 0; }
-static inline int elf_coredump_extra_notes_write(struct file *file,
- loff_t *foffset) { return 0; }
+static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) { return 0; }
#else
extern int elf_coredump_extra_notes_size(void);
-extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset);
+extern int elf_coredump_extra_notes_write(struct coredump_params *cprm);
#endif
#endif /* _LINUX_ELF_H */
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index cdd3d13efce7..698d51a0eea3 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -6,6 +6,8 @@
#include <asm/elf.h>
#include <uapi/linux/elfcore.h>
+struct coredump_params;
+
static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
{
#ifdef ELF_CORE_COPY_REGS
@@ -63,10 +65,9 @@ static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregse
*/
extern Elf_Half elf_core_extra_phdrs(void);
extern int
-elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
- unsigned long limit);
+elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
extern int
-elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
+elf_core_write_extra_data(struct coredump_params *cprm);
extern size_t elf_core_extra_data_size(void);
#endif /* _LINUX_ELFCORE_H */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 955dff5da56a..bf5d574ebdf4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -623,10 +623,13 @@ static inline int inode_unhashed(struct inode *inode)
* 0: the object of the current VFS operation
* 1: parent
* 2: child/target
- * 3: quota file
+ * 3: xattr
+ * 4: second non-directory
+ * The last is for certain operations (such as rename) which lock two
+ * non-directories at once.
*
* The locking order between these classes is
- * parent -> child -> normal -> xattr -> quota
+ * parent -> child -> normal -> xattr -> second non-directory
*/
enum inode_i_mutex_lock_class
{
@@ -634,9 +637,12 @@ enum inode_i_mutex_lock_class
I_MUTEX_PARENT,
I_MUTEX_CHILD,
I_MUTEX_XATTR,
- I_MUTEX_QUOTA
+ I_MUTEX_NONDIR2
};
+void lock_two_nondirectories(struct inode *, struct inode*);
+void unlock_two_nondirectories(struct inode *, struct inode*);
+
/*
* NOTE: in a 32bit arch with a preemptable kernel and
* an UP compile the i_size_read/write must be atomic
@@ -764,12 +770,7 @@ static inline int ra_has_index(struct file_ra_state *ra, pgoff_t index)
#define FILE_MNT_WRITE_RELEASED 2
struct file {
- /*
- * fu_list becomes invalid after file_free is called and queued via
- * fu_rcuhead for RCU freeing
- */
union {
- struct list_head fu_list;
struct llist_node fu_llist;
struct rcu_head fu_rcuhead;
} f_u;
@@ -783,9 +784,6 @@ struct file {
* Must not be taken from IRQ context.
*/
spinlock_t f_lock;
-#ifdef CONFIG_SMP
- int f_sb_list_cpu;
-#endif
atomic_long_t f_count;
unsigned int f_flags;
fmode_t f_mode;
@@ -882,6 +880,7 @@ static inline int file_check_writeable(struct file *filp)
#define FL_POSIX 1
#define FL_FLOCK 2
+#define FL_DELEG 4 /* NFSv4 delegation */
#define FL_ACCESS 8 /* not trying to lock, just looking */
#define FL_EXISTS 16 /* when unlocking, test for existence */
#define FL_LEASE 32 /* lease held on this file */
@@ -1023,7 +1022,7 @@ extern int vfs_test_lock(struct file *, struct file_lock *);
extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
-extern int __break_lease(struct inode *inode, unsigned int flags);
+extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
extern void lease_get_mtime(struct inode *, struct timespec *time);
extern int generic_setlease(struct file *, long, struct file_lock **);
extern int vfs_setlease(struct file *, long, struct file_lock **);
@@ -1132,7 +1131,7 @@ static inline int flock_lock_file_wait(struct file *filp,
return -ENOLCK;
}
-static inline int __break_lease(struct inode *inode, unsigned int mode)
+static inline int __break_lease(struct inode *inode, unsigned int mode, unsigned int type)
{
return 0;
}
@@ -1264,11 +1263,6 @@ struct super_block {
struct list_head s_inodes; /* all inodes */
struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */
-#ifdef CONFIG_SMP
- struct list_head __percpu *s_files;
-#else
- struct list_head s_files;
-#endif
struct list_head s_mounts; /* list of mounts; _not_ for fs use */
struct block_device *s_bdev;
struct backing_dev_info *s_bdi;
@@ -1330,6 +1324,7 @@ struct super_block {
*/
struct list_lru s_dentry_lru ____cacheline_aligned_in_smp;
struct list_lru s_inode_lru ____cacheline_aligned_in_smp;
+ struct rcu_head rcu;
};
extern struct timespec current_fs_time(struct super_block *sb);
@@ -1458,10 +1453,10 @@ extern int vfs_create(struct inode *, struct dentry *, umode_t, bool);
extern int vfs_mkdir(struct inode *, struct dentry *, umode_t);
extern int vfs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
extern int vfs_symlink(struct inode *, struct dentry *, const char *);
-extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
+extern int vfs_link(struct dentry *, struct inode *, struct dentry *, struct inode **);
extern int vfs_rmdir(struct inode *, struct dentry *);
-extern int vfs_unlink(struct inode *, struct dentry *);
-extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
+extern int vfs_unlink(struct inode *, struct dentry *, struct inode **);
+extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *, struct inode **);
/*
* VFS dentry helper functions.
@@ -1875,6 +1870,17 @@ extern struct dentry *mount_pseudo(struct file_system_type *, char *,
(((fops) && try_module_get((fops)->owner) ? (fops) : NULL))
#define fops_put(fops) \
do { if (fops) module_put((fops)->owner); } while(0)
+/*
+ * This one is to be used *ONLY* from ->open() instances.
+ * fops must be non-NULL, pinned down *and* module dependencies
+ * should be sufficient to pin the caller down as well.
+ */
+#define replace_fops(f, fops) \
+ do { \
+ struct file *__file = (f); \
+ fops_put(__file->f_op); \
+ BUG_ON(!(__file->f_op = (fops))); \
+ } while(0)
extern int register_filesystem(struct file_system_type *);
extern int unregister_filesystem(struct file_system_type *);
@@ -1899,6 +1905,9 @@ extern bool fs_fully_visible(struct file_system_type *);
extern int current_umask(void);
+extern void ihold(struct inode * inode);
+extern void iput(struct inode *);
+
/* /sys/fs */
extern struct kobject *fs_kobj;
@@ -1955,9 +1964,39 @@ static inline int locks_verify_truncate(struct inode *inode,
static inline int break_lease(struct inode *inode, unsigned int mode)
{
if (inode->i_flock)
- return __break_lease(inode, mode);
+ return __break_lease(inode, mode, FL_LEASE);
+ return 0;
+}
+
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ if (inode->i_flock)
+ return __break_lease(inode, mode, FL_DELEG);
return 0;
}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(inode, O_WRONLY|O_NONBLOCK);
+ if (ret == -EWOULDBLOCK && delegated_inode) {
+ *delegated_inode = inode;
+ ihold(inode);
+ }
+ return ret;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(*delegated_inode, O_WRONLY);
+ iput(*delegated_inode);
+ *delegated_inode = NULL;
+ return ret;
+}
+
#else /* !CONFIG_FILE_LOCKING */
static inline int locks_mandatory_locked(struct inode *inode)
{
@@ -1997,6 +2036,22 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
return 0;
}
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ return 0;
+}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ return 0;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ BUG();
+ return 0;
+}
+
#endif /* CONFIG_FILE_LOCKING */
/* fs/open.c */
@@ -2223,7 +2278,7 @@ extern void emergency_remount(void);
#ifdef CONFIG_BLOCK
extern sector_t bmap(struct inode *, sector_t);
#endif
-extern int notify_change(struct dentry *, struct iattr *);
+extern int notify_change(struct dentry *, struct iattr *, struct inode **);
extern int inode_permission(struct inode *, int);
extern int generic_permission(struct inode *, int);
@@ -2337,8 +2392,6 @@ extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence);
extern int inode_init_always(struct super_block *, struct inode *);
extern void inode_init_once(struct inode *);
extern void address_space_init_once(struct address_space *mapping);
-extern void ihold(struct inode * inode);
-extern void iput(struct inode *);
extern struct inode * igrab(struct inode *);
extern ino_t iunique(struct super_block *, ino_t);
extern int inode_needs_sync(struct inode *inode);
@@ -2507,8 +2560,10 @@ extern int __page_symlink(struct inode *inode, const char *symname, int len,
int nofs);
extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations;
+extern void kfree_put_link(struct dentry *, struct nameidata *, void *);
extern int generic_readlink(struct dentry *, char __user *, int);
extern void generic_fillattr(struct inode *, struct kstat *);
+int vfs_getattr_nosec(struct path *path, struct kstat *stat);
extern int vfs_getattr(struct path *, struct kstat *);
void __inode_add_bytes(struct inode *inode, loff_t bytes);
void inode_add_bytes(struct inode *inode, loff_t bytes);
@@ -2567,6 +2622,7 @@ extern int simple_write_begin(struct file *file, struct address_space *mapping,
extern int simple_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata);
+extern struct inode *alloc_anon_inode(struct super_block *);
extern struct dentry *simple_lookup(struct inode *, struct dentry *, unsigned int flags);
extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
diff --git a/include/linux/lglock.h b/include/linux/lglock.h
index 0d24e932db0b..96549abe8842 100644
--- a/include/linux/lglock.h
+++ b/include/linux/lglock.h
@@ -25,16 +25,6 @@
#include <linux/cpu.h>
#include <linux/notifier.h>
-/* can make br locks by using local lock for read side, global lock for write */
-#define br_lock_init(name) lg_lock_init(name, #name)
-#define br_read_lock(name) lg_local_lock(name)
-#define br_read_unlock(name) lg_local_unlock(name)
-#define br_write_lock(name) lg_global_lock(name)
-#define br_write_unlock(name) lg_global_unlock(name)
-
-#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
-#define DEFINE_STATIC_BRLOCK(name) DEFINE_STATIC_LGLOCK(name)
-
#ifdef CONFIG_DEBUG_LOCK_ALLOC
#define LOCKDEP_INIT_MAP lockdep_init_map
#else
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 38cd98f112a0..371d346fa270 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -49,6 +49,8 @@ struct mnt_namespace;
#define MNT_LOCK_READONLY 0x400000
#define MNT_LOCKED 0x800000
+#define MNT_DOOMED 0x1000000
+#define MNT_SYNC_UMOUNT 0x2000000
struct vfsmount {
struct dentry *mnt_root; /* root of the mounted tree */
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 8e47bc7a1665..492de72560fa 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -16,7 +16,7 @@ struct nameidata {
struct path root;
struct inode *inode; /* path.dentry.d_inode */
unsigned int flags;
- unsigned seq;
+ unsigned seq, m_seq;
int last_type;
unsigned depth;
char *saved_names[MAX_NESTED_LINKS + 1];
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index e2772666f004..7246ef3d4455 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -23,6 +23,7 @@ struct bsd_acct_struct;
struct pid_namespace {
struct kref kref;
struct pidmap pidmap[PIDMAP_ENTRIES];
+ struct rcu_head rcu;
int last_pid;
unsigned int nr_hashed;
struct task_struct *child_reaper;