vfs: Add a single-or-reconfig keying to vfs_get_super()

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Add an additional keying mode to vfs_get_super() to indicate that only a
single superblock should exist in the system, and that, if it does, further
mounts should invoke reconfiguration upon it.

This allows mount_single() to be replaced.

[Fix by Eric Biggers folded in]

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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David Howells 2019-03-21 09:22:36 +00:00 • committed by Al Viro

parent 0f07100410

commit 43ce4c1fea

2 changed files with 32 additions and 7 deletions

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35

fs/super.c

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4

include/linux/fs_context.h

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