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authorAndy Adamson <andros@netapp.com>2011-03-01 01:34:07 +0000
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-03-11 15:38:41 -0500
commitbf9c1387ca80deac792c9ecf1c64dfcc5d1cc768 (patch)
tree4a06245d796db913a2a137d6498149e047a84283 /fs/nfs
parent6f78befc417dd7122249706b49520da29ba58451 (diff)
downloadop-kernel-dev-bf9c1387ca80deac792c9ecf1c64dfcc5d1cc768.zip
op-kernel-dev-bf9c1387ca80deac792c9ecf1c64dfcc5d1cc768.tar.gz
NFSv4.1: put_layout_hdr can remove nfsi->layout
Prevents an Oops triggered by CB_LAYOUTRECALL and LAYOUTGET race on a pnfs_layout_hdr first pnfs_layout_segment. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/pnfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 0f5b66f..7d031cd 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -768,7 +768,7 @@ pnfs_update_layout(struct inode *ino,
put_layout_hdr(lo);
out:
dprintk("%s end, state 0x%lx lseg %p\n", __func__,
- nfsi->layout->plh_flags, lseg);
+ nfsi->layout ? nfsi->layout->plh_flags : -1, lseg);
return lseg;
out_unlock:
spin_unlock(&ino->i_lock);
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