git: 06a51a510a60 - main - linuxkpi: Implement __GFP_THISNODE in alloc_pages()

The branch main has been updated by dumbbell:

URL: https://cgit.FreeBSD.org/src/commit/?id=06a51a510a60ca29193b2cdb8120b630ea9ef18c

commit 06a51a510a60ca29193b2cdb8120b630ea9ef18c
Author:     Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
AuthorDate: 2026-04-22 16:27:32 +0000
Commit:     Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
CommitDate: 2026-04-22 23:10:41 +0000

    linuxkpi: Implement __GFP_THISNODE in alloc_pages()
    
    It indicates to `alloc_pages()` to allocate the pages from the current
    NUMA domain. If it couldn't, it should not retry elsewhere and return
    failure.
    
    Reviewed by:    bz
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D56590
---
 sys/compat/linuxkpi/common/include/linux/gfp.h |  2 +-
 sys/compat/linuxkpi/common/src/linux_page.c    | 15 ++++++++++++---
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/sys/compat/linuxkpi/common/include/linux/gfp.h b/sys/compat/linuxkpi/common/include/linux/gfp.h
index b94cbada0435..5c638be92beb 100644
--- a/sys/compat/linuxkpi/common/include/linux/gfp.h
+++ b/sys/compat/linuxkpi/common/include/linux/gfp.h
@@ -59,7 +59,7 @@
 #define	__GFP_WAIT	M_WAITOK
 #define	__GFP_DMA32	(1U << 24) /* LinuxKPI only */
 #define	__GFP_NORETRY	(1U << 25) /* LinuxKPI only */
-#define	__GFP_THISNODE	(1U << 26) /* Unimplemented */
+#define	__GFP_THISNODE	(1U << 26)
 #define	__GFP_BITS_SHIFT	27
 #define	__GFP_BITS_MASK	((1 << __GFP_BITS_SHIFT) - 1)
 #define	__GFP_NOFAIL	M_WAITOK
diff --git a/sys/compat/linuxkpi/common/src/linux_page.c b/sys/compat/linuxkpi/common/src/linux_page.c
index 82f3a2a4639f..d8b65a12dc67 100644
--- a/sys/compat/linuxkpi/common/src/linux_page.c
+++ b/sys/compat/linuxkpi/common/src/linux_page.c
@@ -119,10 +119,19 @@ linux_alloc_pages(gfp_t flags, unsigned int order)
 				req |= VM_ALLOC_NORECLAIM;
 
 		retry:
-			page = vm_page_alloc_noobj_contig(req, npages, 0, pmax,
-			    PAGE_SIZE, 0, VM_MEMATTR_DEFAULT);
+			if ((flags & __GFP_THISNODE) != 0) {
+				int curdomain = PCPU_GET(domain);
+				page = vm_page_alloc_noobj_contig_domain(
+				    curdomain, req, npages, 0, pmax,
+				    PAGE_SIZE, 0, VM_MEMATTR_DEFAULT);
+			} else {
+				page = vm_page_alloc_noobj_contig(
+				    req, npages, 0, pmax,
+				    PAGE_SIZE, 0, VM_MEMATTR_DEFAULT);
+			}
+
 			if (page == NULL) {
-				if ((flags & (M_WAITOK | __GFP_NORETRY)) ==
+				if ((flags & (M_WAITOK | __GFP_NORETRY | __GFP_THISNODE)) ==
 				    M_WAITOK) {
 					int err = vm_page_reclaim_contig(req,
 					    npages, 0, pmax, PAGE_SIZE, 0);