This is a note to let you know that I've just added the patch titled
f2fs: increase BG GC migration window granularity when boosted for zoned devices
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-increase-bg-gc-migration-window-granularity-whe.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 993b130a8bcd8e84e3e7813abd065386f01a5eaf
Author: Daeho Jeong <daehojeong@xxxxxxxxxx>
Date: Mon Sep 9 15:19:43 2024 -0700
f2fs: increase BG GC migration window granularity when boosted for zoned devices
[ Upstream commit 2223fe652f759649ae1d520e47e5f06727c0acbd ]
Need bigger BG GC migration window granularity when free section is
running low.
Signed-off-by: Daeho Jeong <daehojeong@xxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Stable-dep-of: 5cc69a27abfa ("f2fs: forcibly migrate to secure space for zoned device file pinning")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 5cd316d2102de..9a3d3994cf2ba 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1728,10 +1728,18 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
sec_end_segno -= SEGS_PER_SEC(sbi) -
f2fs_usable_segs_in_sec(sbi, segno);
- if (gc_type == BG_GC)
- end_segno = start_segno +
+ if (gc_type == BG_GC) {
+ unsigned int window_granularity =
sbi->migration_window_granularity;
+ if (f2fs_sb_has_blkzoned(sbi) &&
+ !has_enough_free_blocks(sbi,
+ LIMIT_BOOST_ZONED_GC))
+ window_granularity *= BOOST_GC_MULTIPLE;
+
+ end_segno = start_segno + window_granularity;
+ }
+
if (end_segno > sec_end_segno)
end_segno = sec_end_segno;
}
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
index 245f93663745a..78abeebd68b5e 100644
--- a/fs/f2fs/gc.h
+++ b/fs/f2fs/gc.h
@@ -33,6 +33,7 @@
#define LIMIT_NO_ZONED_GC 60 /* percentage over total user space of no gc for zoned devices */
#define LIMIT_BOOST_ZONED_GC 25 /* percentage over total user space of boosted gc for zoned devices */
#define DEF_MIGRATION_WINDOW_GRANULARITY_ZONED 3
+#define BOOST_GC_MULTIPLE 5
#define DEF_GC_FAILED_PINNED_FILES 2048
#define MAX_GC_FAILED_PINNED_FILES USHRT_MAX
