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| author | David Howells <dhowells@redhat.com> | 2018-11-05 18:40:31 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-03-20 23:49:06 +0100 |
| commit | 44dfd84a6d54a675e35ab618d9fab47b36cb78cd (patch) | |
| tree | 6b5542f217686066119c9bdfed2182e2c2a6d4a9 /fs/fs_context.c | |
| parent | vfs: syscall: Add move_mount(2) to move mounts around (diff) | |
| download | linux-44dfd84a6d54a675e35ab618d9fab47b36cb78cd.tar.xz linux-44dfd84a6d54a675e35ab618d9fab47b36cb78cd.zip | |
teach move_mount(2) to work with OPEN_TREE_CLONE
Allow a detached tree created by open_tree(..., OPEN_TREE_CLONE) to be
attached by move_mount(2).
If by the time of final fput() of OPEN_TREE_CLONE-opened file its tree is
not detached anymore, it won't be dissolved. move_mount(2) is adjusted
to handle detached source.
That gives us equivalents of mount --bind and mount --rbind.
Thanks also to Alan Jenkins <alan.christopher.jenkins@gmail.com> for
providing a whole bunch of ways to break things using this interface.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/fs_context.c')
0 files changed, 0 insertions, 0 deletions