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| author | Amir Goldstein <amir73il@gmail.com> | 2017-06-21 15:28:32 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-07-04 22:03:16 +0200 |
| commit | ad0af7104dadccd55cd2b390271677fac142650f (patch) | |
| tree | 1e377c42709b12efc4e01507143ebba09f389bc7 /fs/seq_file.c | |
| parent | 04a01ac7ed3c5cd718713ef6341249a143c96b10 (diff) | |
| download | op-kernel-dev-ad0af7104dadccd55cd2b390271677fac142650f.zip op-kernel-dev-ad0af7104dadccd55cd2b390271677fac142650f.tar.gz | |
vfs: introduce inode 'inuse' lock
Added an i_state flag I_INUSE and helpers to set/clear/test the bit.
The 'inuse' lock is an 'advisory' inode lock, that can be used to extend
exclusive create protection beyond parent->i_mutex lock among cooperating
users.
This is going to be used by overlayfs to get exclusive ownership on upper
and work dirs among overlayfs mounts.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/seq_file.c')
0 files changed, 0 insertions, 0 deletions
