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authorAl Viro <viro@zeniv.linux.org.uk>2011-03-02 16:42:38 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-03 01:28:17 -0500
commitbabfe56046885749b6a90a3c4409219a1f16cf48 (patch)
tree67c9c4f3a03902a94036e573a3d82fe290eeac4d /fs
parent30eb43d31478f0fca28423623f3ec6af13f845fa (diff)
downloadop-kernel-dev-babfe56046885749b6a90a3c4409219a1f16cf48.zip
op-kernel-dev-babfe56046885749b6a90a3c4409219a1f16cf48.tar.gz
exofs: i_nlink races in rename()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/exofs/namei.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c
index 264e95d..4d70db1 100644
--- a/fs/exofs/namei.c
+++ b/fs/exofs/namei.c
@@ -272,7 +272,6 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
new_de = exofs_find_entry(new_dir, new_dentry, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
err = exofs_set_link(new_dir, new_de, new_page, old_inode);
new_inode->i_ctime = CURRENT_TIME;
if (dir_de)
@@ -286,12 +285,9 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (new_dir->i_nlink >= EXOFS_LINK_MAX)
goto out_dir;
}
- inode_inc_link_count(old_inode);
err = exofs_add_link(new_dentry, old_inode);
- if (err) {
- inode_dec_link_count(old_inode);
+ if (err)
goto out_dir;
- }
if (dir_de)
inode_inc_link_count(new_dir);
}
@@ -299,7 +295,7 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
old_inode->i_ctime = CURRENT_TIME;
exofs_delete_entry(old_de, old_page);
- inode_dec_link_count(old_inode);
+ mark_inode_dirty(old_inode);
if (dir_de) {
err = exofs_set_link(old_inode, dir_de, dir_page, new_dir);
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