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    Subject[PATCH 5/6] union-mount: Call do_whiteout() on unlink and rmdir in unions
    Date
    From: Jan Blunck <jblunck@suse.de>

    Call do_whiteout() when removing files and directories from a union
    mounted file system.

    Signed-off-by: Valerie Aurora <vaurora@redhat.com>
    ---
    fs/namei.c | 8 ++++++++
    1 files changed, 8 insertions(+), 0 deletions(-)

    diff --git a/fs/namei.c b/fs/namei.c
    index 85d95fc..9797074 100644
    --- a/fs/namei.c
    +++ b/fs/namei.c
    @@ -2670,6 +2670,10 @@ static long do_rmdir(int dfd, const char __user *pathname)
    error = mnt_want_write(nd.path.mnt);
    if (error)
    goto exit3;
    + if (IS_UNIONED_DIR(&nd.path)) {
    + error = do_whiteout(&nd, &path, 1);
    + goto exit4;
    + }
    error = security_path_rmdir(&nd.path, path.dentry);
    if (error)
    goto exit4;
    @@ -2758,6 +2762,10 @@ static long do_unlinkat(int dfd, const char __user *pathname)
    error = mnt_want_write(nd.path.mnt);
    if (error)
    goto exit2;
    + if (IS_UNIONED_DIR(&nd.path)) {
    + error = do_whiteout(&nd, &path, 0);
    + goto exit3;
    + }
    error = security_path_unlink(&nd.path, path.dentry);
    if (error)
    goto exit3;
    --
    1.5.6.5


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