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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2018-02-23 21:54:18 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-03-29 15:07:02 -0400 |
| commit | 3b3f09f48ba78c0634e929849860a6447d057eed (patch) | |
| tree | 6f1ee9debc0343c409b2d6158e9f50c42127e8fe /security | |
| parent | d_delete(): get rid of trylock loop (diff) | |
| download | linux-dev-3b3f09f48ba78c0634e929849860a6447d057eed.tar.xz linux-dev-3b3f09f48ba78c0634e929849860a6447d057eed.zip | |
get rid of trylock loop in locking dentries on shrink list
In case of trylock failure don't re-add to the list - drop the locks
and carefully get them in the right order. For shrink_dentry_list(),
somebody having grabbed a reference to dentry means that we can
kick it off-list, so if we find dentry being modified under us we
don't need to play silly buggers with retries anyway - off the list
it is.
The locking logics taken out into a helper of its own; lock_parent()
is no longer used for dentries that can be killed under us.
[fix from Eric Biggers folded]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions