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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-30 20:45:35 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-30 22:34:50 +0400
commit0c0308066ca53fdf1423895f3a42838b67b3a5a8 (patch)
tree4c6f0d852456581a7ca17286601d18d7bb030632 /include/linux/nfs_fs.h
parented1e6211a0a134ff23592c6f057af982ad5dab52 (diff)
downloadlinux-0c0308066ca53fdf1423895f3a42838b67b3a5a8.tar.xz
NFS: Fix spurious readdir cookie loop messages
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> Cc: stable@kernel.org [2.6.39+] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_fs.h')
-rw-r--r--include/linux/nfs_fs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 8b579beb6358..b96fb99072ff 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -99,9 +99,10 @@ struct nfs_open_context {
struct nfs_open_dir_context {
struct rpc_cred *cred;
+ unsigned long attr_gencount;
__u64 dir_cookie;
__u64 dup_cookie;
- int duped;
+ signed char duped;
};
/*