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[v3,09/28] NFSv4.1: Fix a reference leak in pnfs_update_layout

Message ID 1348516606-22721-9-git-send-email-Trond.Myklebust@netapp.com (mailing list archive)
State New, archived
Headers show

Commit Message

Trond Myklebust Sept. 24, 2012, 7:56 p.m. UTC 
If we exit after the call to pnfs_find_alloc_layout(), we have to ensure
that we put the struct pnfs_layout_hdr.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---
 fs/nfs/pnfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 0b5387b..a9c9291 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1070,7 +1070,8 @@  pnfs_update_layout(struct inode *ino,
 	lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);
 	if (lo == NULL) {
 		dprintk("%s ERROR: can't get pnfs_layout_hdr\n", __func__);
-		goto out_unlock;
+		spin_unlock(&ino->i_lock);
+		return NULL;
 	}
 
 	/* Do we even need to bother with this? */
@@ -1125,8 +1126,8 @@  pnfs_update_layout(struct inode *ino,
 		spin_unlock(&clp->cl_lock);
 	}
 	atomic_dec(&lo->plh_outstanding);
-	pnfs_put_layout_hdr(lo);
 out:
+	pnfs_put_layout_hdr(lo);
 	dprintk("%s end, state 0x%lx lseg %p\n", __func__,
 		nfsi->layout ? nfsi->layout->plh_flags : -1, lseg);
 	return lseg;