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fs: export mnt_idmap_get/mnt_idmap_put

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These helpers are required to support idmapped mounts in CephFS.

Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Alexander Mikhalitsyn 2023-08-07 15:26:15 +02:00 committed by Ilya Dryomov
parent 522dc5108f
commit 1b90344614
2 changed files with 5 additions and 0 deletions
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2
fs/mnt_idmapping.c
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@ -256,6 +256,7 @@ struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap)
return idmap;
}
EXPORT_SYMBOL_GPL(mnt_idmap_get);
/**
* mnt_idmap_put - put a reference to an idmapping
@ -271,3 +272,4 @@ void mnt_idmap_put(struct mnt_idmap *idmap)
kfree(idmap);
}
}
EXPORT_SYMBOL_GPL(mnt_idmap_put);

3
include/linux/mnt_idmapping.h
View file

@ -115,6 +115,9 @@ static inline bool vfsgid_eq_kgid(vfsgid_t vfsgid, kgid_t kgid)
int vfsgid_in_group_p(vfsgid_t vfsgid);
struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap);
void mnt_idmap_put(struct mnt_idmap *idmap);
vfsuid_t make_vfsuid(struct mnt_idmap *idmap,
struct user_namespace *fs_userns, kuid_t kuid);