[PATCH 3/3] nfsd: vfs_llseek() with O_32BITHASH or O_64BITHASH
From: Bernd Schubert <hidden>
Date: 2011-07-27 11:03:01
Also in:
linux-fsdevel, linux-nfs
Subsystem:
filesystems (vfs and infrastructure), kernel nfsd, sunrpc, and lockd servers, the rest · Maintainers:
Alexander Viro, Christian Brauner, Chuck Lever, Jeff Layton, Linus Torvalds
Use 32-bit or 64-bit llseek() hashes for directory offsets depending on the NFS version. NFSv2 gets 32-bit hashes only. Signed-off-by: Bernd Schubert <redacted> --- fs/nfsd/vfs.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index fd0acca..d79bbcd 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c@@ -1994,6 +1994,12 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp, if (err) goto out; + /* NFSv2 only supports 32 bit cookies */ + if (rqstp->rq_vers > 2) + file->f_flags &= O_64BITHASH; + else + file->f_flags &= O_32BITHASH; + offset = vfs_llseek(file, offset, 0); if (offset < 0) { err = nfserrno((int)offset);