diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/Locking | 6 | ||||
| -rw-r--r-- | Documentation/filesystems/directory-locking | 2 | ||||
| -rw-r--r-- | Documentation/filesystems/vfs.txt | 9 |
3 files changed, 4 insertions, 13 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index d30fb2cb5066..da320bc08b9e 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -50,8 +50,6 @@ prototypes: int (*mkdir) (struct inode *,struct dentry *,umode_t); int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); - int (*rename) (struct inode *, struct dentry *, - struct inode *, struct dentry *); int (*rename2) (struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); int (*readlink) (struct dentry *, char __user *,int); @@ -83,7 +81,6 @@ symlink: yes mkdir: yes unlink: yes (both) rmdir: yes (both) (see below) -rename: yes (all) (see below) rename2: yes (all) (see below) readlink: no get_link: no @@ -102,8 +99,7 @@ tmpfile: no Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on victim. - cross-directory ->rename() and rename2() has (per-superblock) -->s_vfs_rename_sem. + cross-directory ->rename2() has (per-superblock) ->s_vfs_rename_sem. See Documentation/filesystems/directory-locking for more detailed discussion of the locking scheme for directory operations. diff --git a/Documentation/filesystems/directory-locking b/Documentation/filesystems/directory-locking index c314badbcfc6..4e32cb961e5b 100644 --- a/Documentation/filesystems/directory-locking +++ b/Documentation/filesystems/directory-locking @@ -19,7 +19,7 @@ locks victim and calls the method. Locks are exclusive. 4) rename() that is _not_ cross-directory. Locking rules: caller locks the parent and finds source and target. In case of exchange (with -RENAME_EXCHANGE in rename2() flags argument) lock both. In any case, +RENAME_EXCHANGE in flags argument) lock both. In any case, if the target already exists, lock it. If the source is a non-directory, lock it. If we need to lock both, lock them in inode pointer order. Then call the method. All locks are exclusive. diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 9ace359d6cc5..c641e0c37a07 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -345,8 +345,6 @@ struct inode_operations { int (*mkdir) (struct inode *,struct dentry *,umode_t); int (*rmdir) (struct inode *,struct dentry *); int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); - int (*rename) (struct inode *, struct dentry *, - struct inode *, struct dentry *); int (*rename2) (struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); int (*readlink) (struct dentry *, char __user *,int); @@ -416,11 +414,8 @@ otherwise noted. rename: called by the rename(2) system call to rename the object to have the parent and name given by the second inode and dentry. - rename2: this has an additional flags argument compared to rename. - If no flags are supported by the filesystem then this method - need not be implemented. If some flags are supported then the - filesystem must return -EINVAL for any unsupported or unknown - flags. Currently the following flags are implemented: + The filesystem must return -EINVAL for any unsupported or + unknown flags. Currently the following flags are implemented: (1) RENAME_NOREPLACE: this flag indicates that if the target of the rename exists the rename should fail with -EEXIST instead of replacing the target. The VFS already checks for |
