From bf9c1387ca80deac792c9ecf1c64dfcc5d1cc768 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:07 +0000 Subject: 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 Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 0f5b66f90d1..7d031cd7d92 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); -- cgit v1.2.3-70-g09d2