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Date: Fri, 5 May 2023 08:50:40 -0700
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Cc: Daeho Jeong <daehojeong@...gle.com>,
Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH] f2fs: maintain six open zones for zoned devices
From: Daeho Jeong <daehojeong@...gle.com>
To keep six open zone constraints, make them not to be open over six
open zones.
Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/data.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
fs/f2fs/f2fs.h | 5 +++++
2 files changed, 62 insertions(+)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7dd92a9028b1..bb9de0a02143 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -383,6 +383,17 @@ static void f2fs_write_end_io(struct bio *bio)
bio_put(bio);
}
+#ifdef CONFIG_BLK_DEV_ZONED
+static void f2fs_zone_write_end_io(struct bio *bio)
+{
+ struct f2fs_bio_info *io = (struct f2fs_bio_info *)bio->bi_private;
+
+ bio->bi_private = io->bi_private;
+ complete(&io->zone_wait);
+ f2fs_write_end_io(bio);
+}
+#endif
+
struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
block_t blk_addr, sector_t *sector)
{
@@ -639,6 +650,10 @@ int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi)
INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock);
+#ifdef CONFIG_BLK_DEV_ZONED
+ sbi->write_io[i][j].zone_pending_bio = NULL;
+ sbi->write_io[i][j].bi_private = NULL;
+#endif
}
}
@@ -965,6 +980,26 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
return 0;
}
+#ifdef CONFIG_BLK_DEV_ZONED
+static bool is_end_zone_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr)
+{
+ int devi = 0;
+
+ if (f2fs_is_multi_device(sbi)) {
+ devi = f2fs_target_device_index(sbi, blkaddr);
+ if (blkaddr < FDEV(devi).start_blk ||
+ blkaddr > FDEV(devi).end_blk) {
+ f2fs_err(sbi, "Invalid block %x", blkaddr);
+ return false;
+ }
+ blkaddr -= FDEV(devi).start_blk;
+ }
+ return bdev_zoned_model(FDEV(devi).bdev) == BLK_ZONED_HM &&
+ f2fs_blkz_is_seq(sbi, devi, blkaddr) &&
+ (blkaddr % sbi->blocks_per_blkz == sbi->blocks_per_blkz - 1);
+}
+#endif
+
void f2fs_submit_page_write(struct f2fs_io_info *fio)
{
struct f2fs_sb_info *sbi = fio->sbi;
@@ -975,6 +1010,16 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
f2fs_bug_on(sbi, is_read_io(fio->op));
f2fs_down_write(&io->io_rwsem);
+
+#ifdef CONFIG_BLK_DEV_ZONED
+ if (f2fs_sb_has_blkzoned(sbi) && btype < META && io->zone_pending_bio) {
+ wait_for_completion_io(&io->zone_wait);
+ bio_put(io->zone_pending_bio);
+ io->zone_pending_bio = NULL;
+ io->bi_private = NULL;
+ }
+#endif
+
next:
if (fio->in_list) {
spin_lock(&io->io_lock);
@@ -1038,6 +1083,18 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
if (fio->in_list)
goto next;
out:
+#ifdef CONFIG_BLK_DEV_ZONED
+ if (f2fs_sb_has_blkzoned(sbi) && btype < META &&
+ is_end_zone_blkaddr(sbi, fio->new_blkaddr)) {
+ bio_get(io->bio);
+ init_completion(&io->zone_wait);
+ io->bi_private = io->bio->bi_private;
+ io->bio->bi_private = io;
+ io->bio->bi_end_io = f2fs_zone_write_end_io;
+ io->zone_pending_bio = io->bio;
+ __submit_merged_bio(io);
+ }
+#endif
if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
!f2fs_is_checkpoint_ready(sbi))
__submit_merged_bio(io);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 7afc9aef127a..0f05c1dd633f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1218,6 +1218,11 @@ struct f2fs_bio_info {
struct bio *bio; /* bios to merge */
sector_t last_block_in_bio; /* last block number */
struct f2fs_io_info fio; /* store buffered io info. */
+#ifdef CONFIG_BLK_DEV_ZONED
+ struct completion zone_wait; /* condition value for the previous open zone to close */
+ struct bio *zone_pending_bio; /* pending bio for the previous zone */
+ void *bi_private; /* previous bi_private for pending bio */
+#endif
struct f2fs_rwsem io_rwsem; /* blocking op for bio */
spinlock_t io_lock; /* serialize DATA/NODE IOs */
struct list_head io_list; /* track fios */
--
2.40.1.521.gf1e218fcd8-goog
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