On Thu, Jul 21, 2016 at 12:19 PM, <zhangaihua1@xxxxxxxxxx> wrote:
> From: Aihua Zhang <zhangaihua1@xxxxxxxxxx>
>
> after patch:
> [root@localhost bin]# ./inotify04
> inotify04 1 TPASS : got event: wd=1 mask=400 cookie=0 len=0 name=""
> inotify04 2 TPASS : got event: wd=1 mask=8000 cookie=0 len=0 name=""
> inotify04 3 TPASS : got event: wd=2 mask=4 cookie=0 len=0 name=""
> inotify04 4 TPASS : got event: wd=2 mask=400 cookie=0 len=0 name=""
> inotify04 5 TPASS : got event: wd=2 mask=8000 cookie=0 len=0 name=""
>
> Signed-off-by: Aihua Zhang <zhangaihua1@xxxxxxxxxx>
> ---
> fs/dcache.c | 8 ++++++--
> fs/overlayfs/inode.c | 2 +-
> include/linux/fs.h | 1 +
> 3 files changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/fs/dcache.c b/fs/dcache.c
> index 7654509..0db095d 100644
> --- a/fs/dcache.c
> +++ b/fs/dcache.c
> @@ -313,7 +313,9 @@ static void dentry_iput(struct dentry * dentry)
> hlist_del_init(&dentry->d_u.d_alias);
> spin_unlock(&dentry->d_lock);
> spin_unlock(&inode->i_lock);
> - if (!inode->i_nlink)
> + if ((!inode->i_nlink) ||
> + ((inode->i_flags & S_SPECIAL_OVL) &&
> + (1 == inode->i_nlink)))
No such horrible hackery is needed if overlay code would correctly
reset i_nlink on rmdir.
See a50128d4524a ("ovl: clear nlink on rmdir") in the overlayfs-next branch of
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git
Thanks,
Miklos
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