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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-30 12:45:35 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-04 21:58:40 -0700 |
| commit | c14acb19a4b1482b6dd6e9d0874b2c8e32d6599d (patch) | |
| tree | 09449801fb0b88b73bdbb83876f251a65a2120ac /security | |
| parent | 1fcb9d4b03b6ad6f4de417bbbe21d82123290114 (diff) | |
| download | lwn-c14acb19a4b1482b6dd6e9d0874b2c8e32d6599d.tar.gz lwn-c14acb19a4b1482b6dd6e9d0874b2c8e32d6599d.zip | |
NFS: Fix spurious readdir cookie loop messages
commit 0c0308066ca53fdf1423895f3a42838b67b3a5a8 upstream.
If the directory contents change, then we have to accept that the
file->f_pos value may shrink if we do a 'search-by-cookie'. In that
case, we should turn off the loop detection and let the NFS client
try to recover.
The patch also fixes a second loop detection bug by ensuring
that after turning on the ctx->duped flag, we read at least one new
cookie into ctx->dir_cookie before attempting to match with
ctx->dup_cookie.
Reported-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions