From: Daeho Jeong <daehoje...@google.com>
Need bigger BG GC migration window granularity when free section is
running low.
Signed-off-by: Daeho Jeong <daehoje...@google.com>
---
fs/f2fs/gc.c | 12 ++++++++++--
fs/f2fs/gc.h | 1 +
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 5cd316d2102d..9a3d3994cf2b 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 245f93663745..78abeebd68b5 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
--
2.46.0.598.g6f2099f65c-goog
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