[merged] iov_iter-iov_folioq_get_pages-dont-leave-empty-slot-behind.patch removed from -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The quilt patch titled
     Subject: iov_iter: iov_folioq_get_pages: don't leave empty slot behind
has been removed from the -mm tree.  Its filename was
     iov_iter-iov_folioq_get_pages-dont-leave-empty-slot-behind.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Dominique Martinet <asmadeus@codewreck.org>
Subject: iov_iter: iov_folioq_get_pages: don't leave empty slot behind
Date: Wed, 13 Aug 2025 15:04:56 +0900

After advancing into a folioq it makes more sense to point to the next
slot than at the end of the current slot.  This should not be needed for
correctness, but this also happens to "fix" the 9p bug with
iterate_folioq() not copying properly.

Link: https://lkml.kernel.org/r/20250813-iot_iter_folio-v3-0-a0ffad2b665a@codewreck.org
Link: https://lkml.kernel.org/r/20250813-iot_iter_folio-v3-2-a0ffad2b665a@codewreck.org
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Acked-by: David Howells <dhowells@redhat.com>
Tested-by: Arnout Engelen <arnout@bzzt.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christian Theune <ct@flyingcircus.io>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Maximilian Bosch <maximilian@mbosch.me>
Cc: Ryan Lahfa <ryan@lahfa.xyz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/iov_iter.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/lib/iov_iter.c~iov_iter-iov_folioq_get_pages-dont-leave-empty-slot-behind
+++ a/lib/iov_iter.c
@@ -1032,9 +1032,6 @@ static ssize_t iter_folioq_get_pages(str
 			maxpages--;
 		}
 
-		if (maxpages == 0 || extracted >= maxsize)
-			break;
-
 		if (iov_offset >= fsize) {
 			iov_offset = 0;
 			slot++;
@@ -1043,6 +1040,9 @@ static ssize_t iter_folioq_get_pages(str
 				slot = 0;
 			}
 		}
+
+		if (maxpages == 0 || extracted >= maxsize)
+			break;
 	}
 
 	iter->count = count;
_

Patches currently in -mm which might be from asmadeus@codewreck.org are

iov_iter-iterate_folioq-fix-handling-of-offset-=-folio-size.patch