1 files changed, 57 insertions, 88 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 68ca1b0491af..9a96b4d83fc1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -8,6 +8,7 @@
 
 #include <linux/limits.h>
 #include <linux/ioctl.h>
+#include <linux/blk_types.h>
 
 /*
  * It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -53,6 +54,7 @@ struct inodes_stat_t {
 #define MAY_APPEND 8
 #define MAY_ACCESS 16
 #define MAY_OPEN 32
+#define MAY_CHDIR 64
 
 /*
  * flags in file.f_mode.  Note that FMODE_READ and FMODE_WRITE must correspond
@@ -90,6 +92,9 @@ struct inodes_stat_t {
 /* Expect random access pattern */
 #define FMODE_RANDOM            ((__force fmode_t)0x1000)
 
+/* File was opened by fanotify and shouldn't generate fanotify events */
+#define FMODE_NONOTIFY          ((__force fmode_t)0x1000000)
+
 /*
  * The below are the various read and write types that we support. Some of
  * them include behavioral modifiers that send information down to the
@@ -117,7 +122,7 @@ struct inodes_stat_t {
  *                      immediately wait on this read without caring about
  *                      unplugging.
  * READA                Used for read-ahead operations. Lower priority, and the
- *                       block layer could (in theory) choose to ignore this
+ *                      block layer could (in theory) choose to ignore this
  *                      request if it runs into resource problems.
  * WRITE                A normal async write. Device will be plugged.
  * SWRITE               Like WRITE, but a special case for ll_rw_block() that
@@ -136,7 +141,7 @@ struct inodes_stat_t {
  * SWRITE_SYNC
  * SWRITE_SYNC_PLUG     Like WRITE_SYNC/WRITE_SYNC_PLUG, but locks the buffer.
  *                      See SWRITE.
- * WRITE_BARRIER        Like WRITE, but tells the block layer that all
+ * WRITE_BARRIER        Like WRITE_SYNC, but tells the block layer that all
  *                      previously submitted writes must be safely on storage
  *                      before this one is started. Also guarantees that when
  *                      this write is complete, it itself is also safely on
@@ -144,29 +149,32 @@ struct inodes_stat_t {
  *                      of this IO.
  *
  */
-#define RW_MASK         1
-#define RWA_MASK        2
-#define READ 0
-#define WRITE 1
-#define READA 2         /* read-ahead  - don't block if no resources */
-#define SWRITE 3        /* for ll_rw_block() - wait for buffer lock */
-#define READ_SYNC       (READ | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG))
-#define READ_META       (READ | (1 << BIO_RW_META))
-#define WRITE_SYNC_PLUG (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
-#define WRITE_SYNC      (WRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
-#define WRITE_ODIRECT_PLUG      (WRITE | (1 << BIO_RW_SYNCIO))
-#define WRITE_META      (WRITE | (1 << BIO_RW_META))
-#define SWRITE_SYNC_PLUG        \
-                        (SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE))
-#define SWRITE_SYNC     (SWRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG))
-#define WRITE_BARRIER   (WRITE | (1 << BIO_RW_BARRIER))
+#define RW_MASK                 REQ_WRITE
+#define RWA_MASK                REQ_RAHEAD
+
+#define READ                    0
+#define WRITE                   RW_MASK
+#define READA                   RWA_MASK
+#define SWRITE                  (WRITE | READA)
+
+#define READ_SYNC               (READ | REQ_SYNC | REQ_UNPLUG)
+#define READ_META               (READ | REQ_META)
+#define WRITE_SYNC_PLUG         (WRITE | REQ_SYNC | REQ_NOIDLE)
+#define WRITE_SYNC              (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
+#define WRITE_ODIRECT_PLUG      (WRITE | REQ_SYNC)
+#define WRITE_META              (WRITE | REQ_META)
+#define WRITE_BARRIER           (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
+                                 REQ_HARDBARRIER)
+#define SWRITE_SYNC_PLUG        (SWRITE | REQ_SYNC | REQ_NOIDLE)
+#define SWRITE_SYNC             (SWRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
 
 /*
  * These aren't really reads or writes, they pass down information about
  * parts of device that are now unused by the file system.
  */
-#define DISCARD_NOBARRIER (WRITE | (1 << BIO_RW_DISCARD))
-#define DISCARD_BARRIER (DISCARD_NOBARRIER | (1 << BIO_RW_BARRIER))
+#define DISCARD_NOBARRIER       (WRITE | REQ_DISCARD)
+#define DISCARD_BARRIER         (WRITE | REQ_DISCARD | REQ_HARDBARRIER)
+#define DISCARD_SECURE          (DISCARD_NOBARRIER | REQ_SECURE)
 
 #define SEL_IN          1
 #define SEL_OUT         2
@@ -209,6 +217,7 @@ struct inodes_stat_t {
 #define MS_KERNMOUNT    (1<<22) /* this is a kern_mount call */
 #define MS_I_VERSION    (1<<23) /* Update inode I_version field */
 #define MS_STRICTATIME  (1<<24) /* Always perform atime updates */
+#define MS_BORN         (1<<29)
 #define MS_ACTIVE       (1<<30)
 #define MS_NOUSER       (1<<31)
 
@@ -309,6 +318,7 @@ struct inodes_stat_t {
 #define BLKALIGNOFF _IO(0x12,122)
 #define BLKPBSZGET _IO(0x12,123)
 #define BLKDISCARDZEROES _IO(0x12,124)
+#define BLKSECDISCARD _IO(0x12,125)
 
 #define BMAP_IOCTL 1            /* obsolete - kept for compatibility */
 #define FIBMAP     _IO(0x00,1)  /* bmap access */
@@ -407,15 +417,13 @@ extern int get_max_files(void);
 extern int sysctl_nr_open;
 extern struct inodes_stat_t inodes_stat;
 extern int leases_enable, lease_break_time;
-#ifdef CONFIG_DNOTIFY
-extern int dir_notify_enable;
-#endif
 
 struct buffer_head;
 typedef int (get_block_t)(struct inode *inode, sector_t iblock,
                         struct buffer_head *bh_result, int create);
 typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
-                        ssize_t bytes, void *private);
+                        ssize_t bytes, void *private, int ret,
+                        bool is_async);
 
 /*
  * Attribute flags.  These should be or-ed together to figure out what
@@ -685,6 +693,7 @@ struct block_device {
  */
 #define PAGECACHE_TAG_DIRTY     0
 #define PAGECACHE_TAG_WRITEBACK 1
+#define PAGECACHE_TAG_TOWRITE   2
 
 int mapping_tagged(struct address_space *mapping, int tag);
 
@@ -768,12 +777,7 @@ struct inode {
 
 #ifdef CONFIG_FSNOTIFY
         __u32                   i_fsnotify_mask; /* all events this inode cares about */
-        struct hlist_head       i_fsnotify_mark_entries; /* fsnotify mark entries */
-#endif
-
-#ifdef CONFIG_INOTIFY
-        struct list_head        inotify_watches; /* watches on this inode */
-        struct mutex            inotify_mutex;  /* protects the watches list */
+        struct hlist_head       i_fsnotify_marks;
 #endif
 
         unsigned long           i_state;
@@ -1479,8 +1483,8 @@ struct block_device_operations;
 
 /*
  * NOTE:
- * read, write, poll, fsync, readv, writev, unlocked_ioctl and compat_ioctl
- * can be called without the big kernel lock held in all filesystems.
+ * all file operations except setlease can be called without
+ * the big kernel lock held in all filesystems.
  */
 struct file_operations {
         struct module *owner;
@@ -1491,7 +1495,6 @@ struct file_operations {
         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
         int (*readdir) (struct file *, void *, filldir_t);
         unsigned int (*poll) (struct file *, struct poll_table_struct *);
-        int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
         int (*mmap) (struct file *, struct vm_area_struct *);
@@ -1561,8 +1564,8 @@ struct super_operations {
 
         void (*dirty_inode) (struct inode *);
         int (*write_inode) (struct inode *, struct writeback_control *wbc);
-        void (*drop_inode) (struct inode *);
-        void (*delete_inode) (struct inode *);
+        int (*drop_inode) (struct inode *);
+        void (*evict_inode) (struct inode *);
         void (*put_super) (struct super_block *);
         void (*write_super) (struct super_block *);
         int (*sync_fs)(struct super_block *sb, int wait);
@@ -1570,7 +1573,6 @@ struct super_operations {
         int (*unfreeze_fs) (struct super_block *);
         int (*statfs) (struct dentry *, struct kstatfs *);
         int (*remount_fs) (struct super_block *, int *, char *);
-        void (*clear_inode) (struct inode *);
         void (*umount_begin) (struct super_block *);
 
         int (*show_options)(struct seq_file *, struct vfsmount *);
@@ -1615,8 +1617,8 @@ struct super_operations {
  * I_FREEING            Set when inode is about to be freed but still has dirty
  *                      pages or buffers attached or the inode itself is still
  *                      dirty.
- * I_CLEAR              Set by clear_inode().  In this state the inode is clean
- *                      and can be destroyed.
+ * I_CLEAR              Added by end_writeback().  In this state the inode is clean
+ *                      and can be destroyed.  Inode keeps I_FREEING.
  *
  *                      Inodes that are I_WILL_FREE, I_FREEING or I_CLEAR are
  *                      prohibited for many purposes.  iget() must wait for
@@ -1813,7 +1815,8 @@ extern struct vfsmount *collect_mounts(struct path *);
 extern void drop_collected_mounts(struct vfsmount *);
 extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
                           struct vfsmount *);
-extern int vfs_statfs(struct dentry *, struct kstatfs *);
+extern int vfs_statfs(struct path *, struct kstatfs *);
+extern int statfs_by_dentry(struct dentry *, struct kstatfs *);
 extern int freeze_super(struct super_block *super);
 extern int thaw_super(struct super_block *super);
 
@@ -2163,9 +2166,8 @@ 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);
-extern void generic_delete_inode(struct inode *inode);
-extern void generic_drop_inode(struct inode *inode);
-extern int generic_detach_inode(struct inode *inode);
+extern int generic_delete_inode(struct inode *inode);
+extern int generic_drop_inode(struct inode *inode);
 
 extern struct inode *ilookup5_nowait(struct super_block *sb,
                 unsigned long hashval, int (*test)(struct inode *, void *),
@@ -2182,7 +2184,7 @@ extern void unlock_new_inode(struct inode *);
 
 extern void __iget(struct inode * inode);
 extern void iget_failed(struct inode *);
-extern void clear_inode(struct inode *);
+extern void end_writeback(struct inode *);
 extern void destroy_inode(struct inode *);
 extern void __destroy_inode(struct inode *);
 extern struct inode *new_inode(struct super_block *);
@@ -2198,7 +2200,6 @@ static inline void insert_inode_hash(struct inode *inode) {
 extern void file_move(struct file *f, struct list_head *list);
 extern void file_kill(struct file *f);
 #ifdef CONFIG_BLOCK
-struct bio;
 extern void submit_bio(int, struct bio *);
 extern int bdev_read_only(struct block_device *);
 #endif
@@ -2265,19 +2266,8 @@ static inline int xip_truncate_page(struct address_space *mapping, loff_t from)
 #endif
 
 #ifdef CONFIG_BLOCK
-struct bio;
 typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
                             loff_t file_offset);
-void dio_end_io(struct bio *bio, int error);
-
-ssize_t __blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb, struct inode *inode,
-        struct block_device *bdev, const struct iovec *iov, loff_t offset,
-        unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-        dio_submit_t submit_io, int lock_type);
-ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
-        struct block_device *bdev, const struct iovec *iov, loff_t offset,
-        unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-        dio_submit_t submit_io, int lock_type);
 
 enum {
         /* need locking between buffered and direct access */
@@ -2287,24 +2277,13 @@ enum {
         DIO_SKIP_HOLES  = 0x02,
 };
 
-static inline ssize_t blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb,
-        struct inode *inode, struct block_device *bdev, const struct iovec *iov,
-        loff_t offset, unsigned long nr_segs, get_block_t get_block,
-        dio_iodone_t end_io)
-{
-        return __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov, offset,
-                                    nr_segs, get_block, end_io, NULL,
-                                    DIO_LOCKING | DIO_SKIP_HOLES);
-}
+void dio_end_io(struct bio *bio, int error);
+
+ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
+        struct block_device *bdev, const struct iovec *iov, loff_t offset,
+        unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+        dio_submit_t submit_io, int flags);
 
-static inline ssize_t blockdev_direct_IO_no_locking_newtrunc(int rw, struct kiocb *iocb,
-        struct inode *inode, struct block_device *bdev, const struct iovec *iov,
-        loff_t offset, unsigned long nr_segs, get_block_t get_block,
-        dio_iodone_t end_io)
-{
-        return __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov, offset,
-                                nr_segs, get_block, end_io, NULL, 0);
-}
 static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
         struct inode *inode, struct block_device *bdev, const struct iovec *iov,
         loff_t offset, unsigned long nr_segs, get_block_t get_block,
@@ -2314,15 +2293,6 @@ static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
                                     nr_segs, get_block, end_io, NULL,
                                     DIO_LOCKING | DIO_SKIP_HOLES);
 }
-
-static inline ssize_t blockdev_direct_IO_no_locking(int rw, struct kiocb *iocb,
-        struct inode *inode, struct block_device *bdev, const struct iovec *iov,
-        loff_t offset, unsigned long nr_segs, get_block_t get_block,
-        dio_iodone_t end_io)
-{
-        return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
-                                    nr_segs, get_block, end_io, NULL, 0);
-}
 #endif
 
 extern const struct file_operations generic_ro_fops;
@@ -2349,10 +2319,10 @@ void inode_set_bytes(struct inode *inode, loff_t bytes);
 
 extern int vfs_readdir(struct file *, filldir_t, void *);
 
-extern int vfs_stat(char __user *, struct kstat *);
-extern int vfs_lstat(char __user *, struct kstat *);
+extern int vfs_stat(const char __user *, struct kstat *);
+extern int vfs_lstat(const char __user *, struct kstat *);
 extern int vfs_fstat(unsigned int, struct kstat *);
-extern int vfs_fstatat(int , char __user *, struct kstat *, int);
+extern int vfs_fstatat(int , const char __user *, struct kstat *, int);
 
 extern int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
                     unsigned long arg);
@@ -2384,7 +2354,6 @@ extern int simple_link(struct dentry *, struct inode *, struct dentry *);
 extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
 extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
-extern int simple_setsize(struct inode *, loff_t);
 extern int noop_fsync(struct file *, int);
 extern int simple_empty(struct dentry *);
 extern int simple_readpage(struct file *file, struct page *page);
@@ -2421,8 +2390,7 @@ extern int buffer_migrate_page(struct address_space *,
 
 extern int inode_change_ok(const struct inode *, struct iattr *);
 extern int inode_newsize_ok(const struct inode *, loff_t offset);
-extern int __must_check inode_setattr(struct inode *, const struct iattr *);
-extern void generic_setattr(struct inode *inode, const struct iattr *attr);
+extern void setattr_copy(struct inode *inode, const struct iattr *attr);
 
 extern void file_update_time(struct file *file);
 
@@ -2513,7 +2481,8 @@ int proc_nr_files(struct ctl_table *table, int write,
 int __init get_filesystem_list(char *buf);
 
 #define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE])
-#define OPEN_FMODE(flag) ((__force fmode_t)((flag + 1) & O_ACCMODE))
+#define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \
+                                            (flag & FMODE_NONOTIFY)))
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_FS_H */