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| author | Fan Yong <yong.fan@whamcloud.com> | 2012-03-18 22:44:40 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-03-18 22:44:40 -0400 |
| commit | d1f5273e9adb40724a85272f248f210dc4ce919a (patch) | |
| tree | 1ddb119dab8247ab7d7774394094c61161013f2a /security | |
| parent | 6a8a13e03861c0ab83ab07d573ca793cff0e5d00 (diff) | |
| download | linux-3.10-d1f5273e9adb40724a85272f248f210dc4ce919a.tar.gz linux-3.10-d1f5273e9adb40724a85272f248f210dc4ce919a.tar.bz2 linux-3.10-d1f5273e9adb40724a85272f248f210dc4ce919a.zip | |
ext4: return 32/64-bit dir name hash according to usage type
Traditionally ext2/3/4 has returned a 32-bit hash value from llseek()
to appease NFSv2, which can only handle a 32-bit cookie for seekdir()
and telldir(). However, this causes problems if there are 32-bit hash
collisions, since the NFSv2 server can get stuck resending the same
entries from the directory repeatedly.
Allow ext4 to return a full 64-bit hash (both major and minor) for
telldir to decrease the chance of hash collisions. This still needs
integration on the NFS side.
Patch-updated-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
(blame me if something is not correct)
Signed-off-by: Fan Yong <yong.fan@whamcloud.com>
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions