git: 5128c8948b4e - stable/14 - swap_pager: Unbusy readahead pages after an I/O error

The branch stable/14 has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=5128c8948b4e56d20dfd623aeb030fb39c8f95b0

commit 5128c8948b4e56d20dfd623aeb030fb39c8f95b0
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2024-04-08 13:02:48 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2024-04-15 14:05:13 +0000

    swap_pager: Unbusy readahead pages after an I/O error
    
    The swap pager itself allocates readahead pages, so should take care to
    unbusy them after a read error, just as it does in the non-error case.
    
    PR:             277538
    Reviewed by:    olce, dougm, alc, kib
    MFC after:      1 week
    Differential Revision:  https://reviews.freebsd.org/D44646
    
    (cherry picked from commit 4696650782e2e5cf7ae5823f1de04550c05b5b75)
---
 sys/vm/swap_pager.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c
index 38151b3be96f..c8b08e0e8315 100644
--- a/sys/vm/swap_pager.c
+++ b/sys/vm/swap_pager.c
@@ -1686,6 +1686,9 @@ swp_pager_async_iodone(struct buf *bp)
 				 * getpages so don't play cute tricks here.
 				 */
 				vm_page_invalid(m);
+				if (i < bp->b_pgbefore ||
+				    i >= bp->b_npages - bp->b_pgafter)
+					vm_page_free_invalid(m);
 			} else {
 				/*
 				 * If a write error occurs, reactivate page