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* [merged mm-stable] scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch removed from -mm tree
@ 2025-09-21 21:24 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2025-09-21 21:24 UTC (permalink / raw)
  To: mm-commits, martin.petersen, lorenzo.stoakes, James.Bottomley,
	bvanassche, david, akpm


The quilt patch titled
     Subject: scsi: scsi_lib: drop nth_page() usage within SG entry
has been removed from the -mm tree.  Its filename was
     scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: David Hildenbrand <david@redhat.com>
Subject: scsi: scsi_lib: drop nth_page() usage within SG entry
Date: Mon, 1 Sep 2025 17:03:51 +0200

It's no longer required to use nth_page() when iterating pages within a
single SG entry, so let's drop the nth_page() usage.

Link: https://lkml.kernel.org/r/20250901150359.867252-31-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/scsi/scsi_lib.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/scsi_lib.c~scsi-scsi_lib-drop-nth_page-usage-within-sg-entry
+++ a/drivers/scsi/scsi_lib.c
@@ -3148,8 +3148,7 @@ void *scsi_kmap_atomic_sg(struct scatter
 	/* Offset starting from the beginning of first page in this sg-entry */
 	*offset = *offset - len_complete + sg->offset;
 
-	/* Assumption: contiguous pages can be accessed as "page + i" */
-	page = nth_page(sg_page(sg), (*offset >> PAGE_SHIFT));
+	page = sg_page(sg) + (*offset >> PAGE_SHIFT);
 	*offset &= ~PAGE_MASK;
 
 	/* Bytes in this sg-entry from *offset to the end of the page */
_

Patches currently in -mm which might be from david@redhat.com are



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2025-09-21 21:24 [merged mm-stable] scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch removed from -mm tree Andrew Morton

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