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| author | Miklos Szeredi <mszeredi@suse.cz> | 2012-09-17 22:31:38 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-02 09:47:23 -0700 |
| commit | 8b2b69f4e7a4cd7768323f84f17f09ab608e620d (patch) | |
| tree | 3e1ed29fc5a8f92522019496e8d4086414f357fa /fs/ubifs | |
| parent | c168d49dbb4bc6cbd58b855166e5f98585479307 (diff) | |
| download | kernel_samsung_aries-8b2b69f4e7a4cd7768323f84f17f09ab608e620d.zip kernel_samsung_aries-8b2b69f4e7a4cd7768323f84f17f09ab608e620d.tar.gz kernel_samsung_aries-8b2b69f4e7a4cd7768323f84f17f09ab608e620d.tar.bz2 | |
vfs: dcache: use DCACHE_DENTRY_KILLED instead of DCACHE_DISCONNECTED in d_kill()
commit b161dfa6937ae46d50adce8a7c6b12233e96e7bd upstream.
IBM reported a soft lockup after applying the fix for the rename_lock
deadlock. Commit c83ce989cb5f ("VFS: Fix the nfs sillyrename regression
in kernel 2.6.38") was found to be the culprit.
The nfs sillyrename fix used DCACHE_DISCONNECTED to indicate that the
dentry was killed. This flag can be set on non-killed dentries too,
which results in infinite retries when trying to traverse the dentry
tree.
This patch introduces a separate flag: DCACHE_DENTRY_KILLED, which is
only set in d_kill() and makes try_to_ascend() test only this flag.
IBM reported successful test results with this patch.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ubifs')
0 files changed, 0 insertions, 0 deletions