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Commit 8f70f53a authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4.1/pnfs: Fix serialisation of layout return and layoutget 



We should always test for outstanding layout returns, whether or not
pnfs_should_retry_layoutget() is true.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent a4497a58

fs/nfs/pnfs.c

+3 −2
Original line number Diff line number Diff line
@@ -1436,6 +1436,8 @@ static int pnfs_layoutget_retry_bit_wait(struct wait_bit_key *key) 


static bool pnfs_prepare_to_retry_layoutget(struct pnfs_layout_hdr *lo)

{

	if (!pnfs_should_retry_layoutget(lo))

		return false;

	/*

	 * send layoutcommit as it can hold up layoutreturn due to lseg

	 * reference
@@ -1531,8 +1533,7 @@ pnfs_update_layout(struct inode *ino, 
	 * Because we free lsegs before sending LAYOUTRETURN, we need to wait

	 * for LAYOUTRETURN even if first is true.

	 */

	if (!lseg && pnfs_should_retry_layoutget(lo) &&

	    test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {

	if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) {

		spin_unlock(&ino->i_lock);

		dprintk("%s wait for layoutreturn\n", __func__);

		if (pnfs_prepare_to_retry_layoutget(lo)) {