The quilt patch titled
Subject: mm/migrate: skip migrating folios under writeback with AS_WRITEBACK_INDETERMINATE mappings
has been removed from the -mm tree. Its filename was
mm-migrate-skip-migrating-folios-under-writeback-with-as_writeback_indeterminate-mappings.patch
This patch was dropped because it was withdrawn
------------------------------------------------------
From: Joanne Koong <joannelkoong@xxxxxxxxx>
Subject: mm/migrate: skip migrating folios under writeback with AS_WRITEBACK_INDETERMINATE mappings
Date: Fri, 22 Nov 2024 15:23:58 -0800
For migrations called in MIGRATE_SYNC mode, skip migrating the folio if it
is under writeback and has the AS_WRITEBACK_INDETERMINATE flag set on its
mapping. If the AS_WRITEBACK_INDETERMINATE flag is set on the mapping,
the writeback may take an indeterminate amount of time to complete, and
waits may get stuck.
Link: https://lkml.kernel.org/r/20241122232359.429647-5-joannelkoong@xxxxxxxxx
Signed-off-by: Joanne Koong <joannelkoong@xxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Acked-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Cc: Bernd Schubert <bernd.schubert@xxxxxxxxxxx>
Cc: Jingbo Xu <jefflexu@xxxxxxxxxxxxxxxxx>
Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/mm/migrate.c~mm-migrate-skip-migrating-folios-under-writeback-with-as_writeback_indeterminate-mappings
+++ a/mm/migrate.c
@@ -1254,7 +1254,10 @@ static int migrate_folio_unmap(new_folio
*/
switch (mode) {
case MIGRATE_SYNC:
- break;
+ if (!src->mapping ||
+ !mapping_writeback_indeterminate(src->mapping))
+ break;
+ fallthrough;
default:
rc = -EBUSY;
goto out;
_
Patches currently in -mm which might be from joannelkoong@xxxxxxxxx are
fuse-remove-tmp-folio-for-writebacks-and-internal-rb-tree.patch
