fs: fix is_mnt_ns_file()

Commit 1fa08aece4 ("nsfs: convert to path_from_stashed() helper") reused
nsfs dentry's d_fsdata, which no longer contains a pointer to
proc_ns_operations.

Fix the remaining use in is_mnt_ns_file().

Fixes: 1fa08aece4 ("nsfs: convert to path_from_stashed() helper")
Cc: stable@vger.kernel.org # v6.9
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Link: https://lore.kernel.org/r/20241211121118.85268-1-mszeredi@redhat.com
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Miklos Szeredi 2024-12-11 13:11:17 +01:00 • committed by Christian Brauner
commit aa21f333c8
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