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authorMark Fasheh <mark.fasheh@oracle.com>2006-09-08 14:22:21 -0700
committerMark Fasheh <mark.fasheh@oracle.com>2006-09-24 13:50:45 -0700
commit349457ccf2592c14bdf13b6706170ae2e94931b1 (patch)
tree3670945b5a62617d38cf1f317487387032d3da4d
parent1390334b4c697b7588d5661fcf6acaeec409cf4c (diff)
[PATCH] Allow file systems to manually d_move() inside of ->rename()
Some file systems want to manually d_move() the dentries involved in a rename. We can do this by making use of the FS_ODD_RENAME flag if we just have nfs_rename() unconditionally do the d_move(). While there, we rename the flag to be more descriptive. OCFS2 uses this to protect that part of the rename operation with a cluster lock. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
-rw-r--r--fs/namei.c6
-rw-r--r--fs/nfs/dir.c3
-rw-r--r--fs/nfs/super.c10
-rw-r--r--include/linux/fs.h7
4 files changed, 13 insertions, 13 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 432d6bc6fab0..6b591c01b09f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2370,7 +2370,8 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
dput(new_dentry);
}
if (!error)
- d_move(old_dentry,new_dentry);
+ if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
+ d_move(old_dentry,new_dentry);
return error;
}
@@ -2393,8 +2394,7 @@ static int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
else
error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
if (!error) {
- /* The following d_move() should become unconditional */
- if (!(old_dir->i_sb->s_type->fs_flags & FS_ODD_RENAME))
+ if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry, new_dentry);
}
if (target)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 3419c2da9ba9..7432f1a43f3d 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1669,8 +1669,7 @@ out:
if (rehash)
d_rehash(rehash);
if (!error) {
- if (!S_ISDIR(old_inode->i_mode))
- d_move(old_dentry, new_dentry);
+ d_move(old_dentry, new_dentry);
nfs_renew_times(new_dentry);
nfs_set_verifier(new_dentry, nfs_save_change_attribute(new_dir));
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index b99113b0f65f..e8d40030cab4 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -71,7 +71,7 @@ static struct file_system_type nfs_fs_type = {
.name = "nfs",
.get_sb = nfs_get_sb,
.kill_sb = nfs_kill_super,
- .fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
struct file_system_type nfs_xdev_fs_type = {
@@ -79,7 +79,7 @@ struct file_system_type nfs_xdev_fs_type = {
.name = "nfs",
.get_sb = nfs_xdev_get_sb,
.kill_sb = nfs_kill_super,
- .fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
static struct super_operations nfs_sops = {
@@ -107,7 +107,7 @@ static struct file_system_type nfs4_fs_type = {
.name = "nfs4",
.get_sb = nfs4_get_sb,
.kill_sb = nfs4_kill_super,
- .fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
struct file_system_type nfs4_xdev_fs_type = {
@@ -115,7 +115,7 @@ struct file_system_type nfs4_xdev_fs_type = {
.name = "nfs4",
.get_sb = nfs4_xdev_get_sb,
.kill_sb = nfs4_kill_super,
- .fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
struct file_system_type nfs4_referral_fs_type = {
@@ -123,7 +123,7 @@ struct file_system_type nfs4_referral_fs_type = {
.name = "nfs4",
.get_sb = nfs4_referral_get_sb,
.kill_sb = nfs4_kill_super,
- .fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
static struct super_operations nfs4_sops = {
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 555bc195c420..1d3e601ece73 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -92,9 +92,10 @@ extern int dir_notify_enable;
#define FS_REQUIRES_DEV 1
#define FS_BINARY_MOUNTDATA 2
#define FS_REVAL_DOT 16384 /* Check the paths ".", ".." for staleness */
-#define FS_ODD_RENAME 32768 /* Temporary stuff; will go away as soon
- * as nfs_rename() will be cleaned up
- */
+#define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move()
+ * during rename() internally.
+ */
+
/*
* These are the fs-independent mount-flags: up to 32 flags are supported
*/