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| author | Eric W. Biederman <[email protected]> | 2015-05-09 20:54:49 +0000 |
|---|---|---|
| committer | Eric W. Biederman <[email protected]> | 2015-07-01 15:36:37 +0000 |
| commit | fbabfd0f4ee2e8847bf56edf481249ad1bb8c44d (patch) | |
| tree | bfe4f910e16663db585336bc7744fbbf312b4701 /fs/proc/generic.c | |
| parent | vfs: Ignore unlocked mounts in fs_fully_visible (diff) | |
| download | kernel-fbabfd0f4ee2e8847bf56edf481249ad1bb8c44d.tar.gz kernel-fbabfd0f4ee2e8847bf56edf481249ad1bb8c44d.zip | |
fs: Add helper functions for permanently empty directories.
To ensure it is safe to mount proc and sysfs I need to check if
filesystems that are mounted on top of them are mounted on truly empty
directories. Given that some directories can gain entries over time,
knowing that a directory is empty right now is insufficient.
Therefore add supporting infrastructure for permantently empty
directories that proc and sysfs can use when they create mount points
for filesystems and fs_fully_visible can use to test for permanently
empty directories to ensure that nothing will be gained by mounting a
fresh copy of proc or sysfs.
Cc: [email protected]
Signed-off-by: "Eric W. Biederman" <[email protected]>
Diffstat (limited to 'fs/proc/generic.c')
0 files changed, 0 insertions, 0 deletions