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| author | Amir Goldstein <amir73il@gmail.com> | 2017-09-25 16:39:55 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-10-05 15:53:18 +0200 |
| commit | 5820dc0888d302ac05f8b91ffdf7e4e53b4fbf53 (patch) | |
| tree | e22ae933b338fe9a51f34cef6658d82484aaff91 /fs/overlayfs/dir.c | |
| parent | dc7ab6773e8171e07f16fd0df0c5eea28c899503 (diff) | |
| download | linux-5820dc0888d302ac05f8b91ffdf7e4e53b4fbf53.tar.bz2 | |
ovl: fix missing unlock_rename() in ovl_do_copy_up()
Use the ovl_lock_rename_workdir() helper which requires
unlock_rename() only on lock success.
Fixes: ("fd210b7d67ee ovl: move copy up lock out")
Cc: <stable@vger.kernel.org> # v4.13
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/dir.c')
| -rw-r--r-- | fs/overlayfs/dir.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 3309b1912241..cc961a3bd3bd 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -216,26 +216,6 @@ out_unlock: return err; } -static int ovl_lock_rename_workdir(struct dentry *workdir, - struct dentry *upperdir) -{ - /* Workdir should not be the same as upperdir */ - if (workdir == upperdir) - goto err; - - /* Workdir should not be subdir of upperdir and vice versa */ - if (lock_rename(workdir, upperdir) != NULL) - goto err_unlock; - - return 0; - -err_unlock: - unlock_rename(workdir, upperdir); -err: - pr_err("overlayfs: failed to lock workdir+upperdir\n"); - return -EIO; -} - static struct dentry *ovl_clear_empty(struct dentry *dentry, struct list_head *list) { |