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authorChristian Brauner <brauner@kernel.org>2023-01-13 12:49:13 +0100
committerChristian Brauner (Microsoft) <brauner@kernel.org>2023-01-19 09:24:25 +0100
commit6c960e68aaed335a0040f16654f3c5e5bfcf9249 (patch)
treec904d5109336fc0d205117643a95166dee54e58a /fs/notify
parentb74d24f7a74ffd2d42ca883d84b7422b8d545901 (diff)
downloadlinux-6c960e68aaed335a0040f16654f3c5e5bfcf9249.tar.gz
fs: port ->create() to pass mnt_idmap
Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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