Merge tag 'xfs-4.16-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

[sfrench/cifs-2.6.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 511fbaabf6248b67220c16653e491f74e3f046e7..2a815560fda0e162c5c27da8249b9f3921328c21 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -639,7 +639,7 @@ struct inode {
                struct hlist_head       i_dentry;
                struct rcu_head         i_rcu;
        };
-       u64                     i_version;
+       atomic64_t              i_version;
        atomic_t                i_count;
        atomic_t                i_dio_count;
        atomic_t                i_writecount;
@@ -748,6 +748,11 @@ static inline void inode_lock_nested(struct inode *inode, unsigned subclass)
        down_write_nested(&inode->i_rwsem, subclass);
 }
 
+static inline void inode_lock_shared_nested(struct inode *inode, unsigned subclass)
+{
+       down_read_nested(&inode->i_rwsem, subclass);
+}
+
 void lock_two_nondirectories(struct inode *, struct inode*);
 void unlock_two_nondirectories(struct inode *, struct inode*);
 
@@ -1359,7 +1364,7 @@ struct super_block {
 
        const struct fscrypt_operations *s_cop;
 
-       struct hlist_bl_head    s_anon;         /* anonymous dentries for (nfs) exporting */
+       struct hlist_bl_head    s_roots;        /* alternate root dentries for NFS */
        struct list_head        s_mounts;       /* list of mounts; _not_ for fs use */
        struct block_device     *s_bdev;
        struct backing_dev_info *s_bdi;
@@ -1608,6 +1613,10 @@ extern int vfs_whiteout(struct inode *, struct dentry *);
 extern struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode,
                                  int open_flag);
 
+int vfs_mkobj(struct dentry *, umode_t,
+               int (*f)(struct dentry *, umode_t, void *),
+               void *);
+
 /*
  * VFS file helper functions.
  */
@@ -1698,7 +1707,7 @@ struct file_operations {
        ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
        int (*iterate) (struct file *, struct dir_context *);
        int (*iterate_shared) (struct file *, struct dir_context *);
-       unsigned int (*poll) (struct file *, struct poll_table_struct *);
+       __poll_t (*poll) (struct file *, struct poll_table_struct *);
        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 *);
@@ -2036,21 +2045,6 @@ static inline void inode_dec_link_count(struct inode *inode)
        mark_inode_dirty(inode);
 }
 
-/**
- * inode_inc_iversion - increments i_version
- * @inode: inode that need to be updated
- *
- * Every time the inode is modified, the i_version field will be incremented.
- * The filesystem has to be mounted with i_version flag
- */
-
-static inline void inode_inc_iversion(struct inode *inode)
-{
-       spin_lock(&inode->i_lock);
-       inode->i_version++;
-       spin_unlock(&inode->i_lock);
-}
-
 enum file_time_flags {
        S_ATIME = 1,
        S_MTIME = 2,
@@ -2699,7 +2693,6 @@ extern sector_t bmap(struct inode *, sector_t);
 #endif
 extern int notify_change(struct dentry *, struct iattr *, struct inode **);
 extern int inode_permission(struct inode *, int);
-extern int __inode_permission(struct inode *, int);
 extern int generic_permission(struct inode *, int);
 extern int __check_sticky(struct inode *dir, struct inode *inode);
 
@@ -2992,6 +2985,7 @@ enum {
 };
 
 void dio_end_io(struct bio *bio);
+void dio_warn_stale_pagecache(struct file *filp);
 
 ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
                             struct block_device *bdev, struct iov_iter *iter,
@@ -3239,6 +3233,8 @@ static inline int kiocb_set_rw_flags(struct kiocb *ki, rwf_t flags)
                ki->ki_flags |= IOCB_DSYNC;
        if (flags & RWF_SYNC)
                ki->ki_flags |= (IOCB_DSYNC | IOCB_SYNC);
+       if (flags & RWF_APPEND)
+               ki->ki_flags |= IOCB_APPEND;
        return 0;
 }