git: b333b8799af0 - releng/15.1 - uipc_shm.c: make large page allocation interruptible

The branch releng/15.1 has been updated by cperciva:

URL: https://cgit.FreeBSD.org/src/commit/?id=b333b8799af00b2b95681219a6b222403c3bfdc9

commit b333b8799af00b2b95681219a6b222403c3bfdc9
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2026-04-28 02:34:49 +0000
Commit:     Colin Percival <cperciva@FreeBSD.org>
CommitDate: 2026-05-09 20:44:10 +0000

    uipc_shm.c: make large page allocation interruptible
    
    Approved by:    re (cperciva)
    
    (cherry picked from commit 839d3266d8c6f6471cb92a3c0ae32eb16d117427)
    (cherry picked from commit c335dafd77363b67493d37ab260bc82e70c8cfa7)
---
 sys/kern/uipc_shm.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sys/kern/uipc_shm.c b/sys/kern/uipc_shm.c
index 0ad5be2e8d71..197409d97f0c 100644
--- a/sys/kern/uipc_shm.c
+++ b/sys/kern/uipc_shm.c
@@ -829,12 +829,20 @@ shm_dotruncate_largepage(struct shmfd *shmfd, off_t length, void *rl_cookie)
 	 * object lock might allowed mapping of them.
 	 */
 	while (object->size < newobjsz) {
+		error = sig_intr();
+		if (error != 0)
+			return (error);
 		m = vm_page_alloc_contig(object, object->size, aflags,
 		    pagesizes[psind] / PAGE_SIZE, 0, ~0,
 		    pagesizes[psind], 0,
 		    VM_MEMATTR_DEFAULT);
 		if (m == NULL) {
 			VM_OBJECT_WUNLOCK(object);
+			error = sig_intr();
+			if (error != 0) {
+				VM_OBJECT_WLOCK(object);
+				return (error);
+			}
 			if (shmfd->shm_lp_alloc_policy ==
 			    SHM_LARGEPAGE_ALLOC_NOWAIT ||
 			    (shmfd->shm_lp_alloc_policy ==