Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-block.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 64695eb07992998ecfdf89d1c294a33705fee3c3..569c51d37312a31ba9f7bd74e3d0575b4b9ba849 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;
@@ -1872,7 +1872,7 @@ struct super_operations {
  */
 #define __IS_FLG(inode, flg)   ((inode)->i_sb->s_flags & (flg))
 
-static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags & MS_RDONLY; }
+static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags & SB_RDONLY; }
 #define IS_RDONLY(inode)       sb_rdonly((inode)->i_sb)
 #define IS_SYNC(inode)         (__IS_FLG(inode, SB_SYNCHRONOUS) || \
                                        ((inode)->i_flags & S_SYNC))
@@ -2036,21 +2036,6 @@ 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,
@@ -3088,7 +3073,8 @@ static inline int vfs_lstat(const char __user *name, struct kstat *stat)
 static inline int vfs_fstatat(int dfd, const char __user *filename,
                              struct kstat *stat, int flags)
 {
-       return vfs_statx(dfd, filename, flags, stat, STATX_BASIC_STATS);
+       return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
+                        stat, STATX_BASIC_STATS);
 }
 static inline int vfs_fstat(int fd, struct kstat *stat)
 {
@@ -3194,6 +3180,20 @@ static inline bool vma_is_dax(struct vm_area_struct *vma)
        return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
 }
 
+static inline bool vma_is_fsdax(struct vm_area_struct *vma)
+{
+       struct inode *inode;
+
+       if (!vma->vm_file)
+               return false;
+       if (!vma_is_dax(vma))
+               return false;
+       inode = file_inode(vma->vm_file);
+       if (inode->i_mode == S_IFCHR)
+               return false; /* device-dax */
+       return true;
+}
+
 static inline int iocb_flags(struct file *file)
 {
        int res = 0;