Patch "pNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid" has been added to the 4.9-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    pNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pnfs-clear-nfs_layout_return_requested-when-invalidating-the-layout-stateid.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From ae5a459d5f65c3e83f3e14068dde5fb9c9d81807 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Mon, 14 Nov 2016 14:34:18 -0500
Subject: pNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid

From: Trond Myklebust <trond.myklebust@primarydata.com>

commit ae5a459d5f65c3e83f3e14068dde5fb9c9d81807 upstream.

We must ensure that we don't schedule a layoutreturn if the layout stateid
has been marked as invalid.

Fixes: 2a59a0411671e ("pNFS: Fix pnfs_set_layout_stateid() to clear...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/nfs/pnfs.c |   17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -299,6 +299,14 @@ pnfs_put_layout_hdr(struct pnfs_layout_h
 	}
 }
 
+static void
+pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo)
+{
+	lo->plh_return_iomode = 0;
+	lo->plh_return_seq = 0;
+	clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags);
+}
+
 /*
  * Mark a pnfs_layout_hdr and all associated layout segments as invalid
  *
@@ -317,6 +325,7 @@ pnfs_mark_layout_stateid_invalid(struct
 	};
 
 	set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags);
+	pnfs_clear_layoutreturn_info(lo);
 	return pnfs_mark_matching_lsegs_invalid(lo, lseg_list, &range, 0);
 }
 
@@ -818,14 +827,6 @@ pnfs_destroy_all_layouts(struct nfs_clie
 	pnfs_destroy_layouts_byclid(clp, false);
 }
 
-static void
-pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo)
-{
-	lo->plh_return_iomode = 0;
-	lo->plh_return_seq = 0;
-	clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags);
-}
-
 /* update lo->plh_stateid with new if is more recent */
 void
 pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,


Patches currently in stable-queue which might be from trond.myklebust@primarydata.com are

queue-4.9/pnfs-fix-a-deadlock-between-read-resends-and-layoutreturn.patch
queue-4.9/pnfs-don-t-clear-the-layout-stateid-if-a-layout-return-is-outstanding.patch
queue-4.9/sunrpc-fix-refcounting-problems-with-auth_gss-messages.patch
queue-4.9/pnfs-on-error-do-not-send-layoutget-until-the-layoutreturn-has-completed.patch
queue-4.9/pnfs-clear-nfs_layout_return_requested-when-invalidating-the-layout-stateid.patch