Merge tag 'irqchip-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip/genirq updates from Marc Zyngier:

 * Core code update:

  - Non-SMP IRQ affinity fixes, allowing UP kernel to behave similarly
    to SMP ones for the purpose of interrupt affinity

  - Let irq_set_chip_handler_name_locked() take a const struct irq_chip *

  - Tidy-up the NOMAP irqdomain API variant

  - Teach action_show() to use for_each_action_of_desc()

  - Make irq_chip_request_resources_parent() allow the parent callback
    to be optional

  - Remove dynamic allocations from populate_parent_alloc_arg()

 * New drivers:

  - Merge the long awaited IRQ support for the LoongArch architecture,
    with the provisional ACPICA update (to be reverted once the official
    support lands)

  - New Renesas RZ/G2L IRQC driver, equipped with its companion GPIO
    driver

 * Driver updates

  - Optimise the hot path operations for the SiFive PLIC, trading the
    locking for per-CPU priority masking masking operations which are
    apparently faster

  - Work around broken PLIC implementations that deal pretty badly with
    edge-triggered interrupts. Flag two implementations as affected.

  - Simplify the irq-stm32-exti driver, particularly the table that
    remaps the interrupts from exti to the GIC, reducing the memory usage

  - Convert the ocelot irq_chip to being immutable

  - Check ioremap() return value in the MIPS GIC driver

  - Move MMP driver init function declarations into the common .h

  - The obligatory typo fixes

Link: https://lore.kernel.org/all/20220727192356.1860546-1-maz@kernel.org

1 files changed, 15 insertions, 6 deletions

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 68a87be3e6f9..41a9b6b58fb9 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -469,6 +469,7 @@ pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo,
 		pnfs_clear_lseg_state(lseg, lseg_list);
 	pnfs_clear_layoutreturn_info(lo);
 	pnfs_free_returned_lsegs(lo, lseg_list, &range, 0);
+	set_bit(NFS_LAYOUT_DRAIN, &lo->plh_flags);
 	if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) &&
 	    !test_and_set_bit(NFS_LAYOUT_RETURN_LOCK, &lo->plh_flags))
 		pnfs_clear_layoutreturn_waitbit(lo);
@@ -1917,8 +1918,9 @@ static void nfs_layoutget_begin(struct pnfs_layout_hdr *lo)
 
 static void nfs_layoutget_end(struct pnfs_layout_hdr *lo)
 {
-	if (atomic_dec_and_test(&lo->plh_outstanding))
-		wake_up_var(&lo->plh_outstanding);
+	if (atomic_dec_and_test(&lo->plh_outstanding) &&
+	    test_and_clear_bit(NFS_LAYOUT_DRAIN, &lo->plh_flags))
+		wake_up_bit(&lo->plh_flags, NFS_LAYOUT_DRAIN);
 }
 
 static bool pnfs_is_first_layoutget(struct pnfs_layout_hdr *lo)
@@ -2025,11 +2027,11 @@ lookup_again:
 	 * If the layout segment list is empty, but there are outstanding
 	 * layoutget calls, then they might be subject to a layoutrecall.
 	 */
-	if ((list_empty(&lo->plh_segs) || !pnfs_layout_is_valid(lo)) &&
+	if (test_bit(NFS_LAYOUT_DRAIN, &lo->plh_flags) &&
 	    atomic_read(&lo->plh_outstanding) != 0) {
 		spin_unlock(&ino->i_lock);
-		lseg = ERR_PTR(wait_var_event_killable(&lo->plh_outstanding,
-					!atomic_read(&lo->plh_outstanding)));
+		lseg = ERR_PTR(wait_on_bit(&lo->plh_flags, NFS_LAYOUT_DRAIN,
+					   TASK_KILLABLE));
 		if (IS_ERR(lseg))
 			goto out_put_layout_hdr;
 		pnfs_put_layout_hdr(lo);
@@ -2152,6 +2154,12 @@ lookup_again:
 		case -ERECALLCONFLICT:
 		case -EAGAIN:
 			break;
+		case -ENODATA:
+			/* The server returned NFS4ERR_LAYOUTUNAVAILABLE */
+			pnfs_layout_set_fail_bit(
+				lo, pnfs_iomode_to_fail_bit(iomode));
+			lseg = NULL;
+			goto out_put_layout_hdr;
 		default:
 			if (!nfs_error_is_fatal(PTR_ERR(lseg))) {
 				pnfs_layout_clear_fail_bit(lo, pnfs_iomode_to_fail_bit(iomode));
@@ -2407,7 +2415,8 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
 		goto out_forget;
 	}
 
-	if (!pnfs_layout_is_valid(lo) && !pnfs_is_first_layoutget(lo))
+	if (test_bit(NFS_LAYOUT_DRAIN, &lo->plh_flags) &&
+	    !pnfs_is_first_layoutget(lo))
 		goto out_forget;
 
 	if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) {