[PATCH 5.15 257/317] f2fs: replace congestion_wait() calls with io_schedule_timeout()

[Sasha Levin]

From: NeilBrown <neilb@xxxxxxx>

[ Upstream commit a64239d0ef345208d8c15d7841a028a43a34c068 ]

As congestion is no longer tracked, congestion_wait() is effectively
equivalent to io_schedule_timeout().

So introduce f2fs_io_schedule_timeout() which sets TASK_UNINTERRUPTIBLE
and call that instead.

Link: https://lkml.kernel.org/r/164549983744.9187.6425865370954230902.stgit@noble.brown
Signed-off-by: NeilBrown <neilb@xxxxxxx>
Cc: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: Darrick J. Wong <djwong@xxxxxxxxxx>
Cc: Ilya Dryomov <idryomov@xxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: Paolo Valente <paolo.valente@xxxxxxxxxx>
Cc: Philipp Reisner <philipp.reisner@xxxxxxxxxx>
Cc: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Stable-dep-of: fd244524c2cf ("f2fs: compress: fix to cover normal cluster write with cp_rwsem")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/f2fs/compress.c | 4 +---
 fs/f2fs/data.c     | 3 +--
 fs/f2fs/f2fs.h     | 6 ++++++
 fs/f2fs/segment.c  | 8 +++-----
 fs/f2fs/super.c    | 6 ++----
 5 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 7b4479d5b5315..c640e4c63909a 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1504,9 +1504,7 @@ static int f2fs_write_raw_pages(struct compress_ctx *cc,
 				if (IS_NOQUOTA(cc->inode))
 					return 0;
 				ret = 0;
-				cond_resched();
-				congestion_wait(BLK_RW_ASYNC,
-						DEFAULT_IO_TIMEOUT);
+				f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 				goto retry_write;
 			}
 			return ret;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 25dafd1261d71..19b595488a27b 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3158,8 +3158,7 @@ static int f2fs_write_cache_pages(struct address_space *mapping,
 				} else if (ret == -EAGAIN) {
 					ret = 0;
 					if (wbc->sync_mode == WB_SYNC_ALL) {
-						cond_resched();
-						congestion_wait(BLK_RW_ASYNC,
+						f2fs_io_schedule_timeout(
 							DEFAULT_IO_TIMEOUT);
 						goto retry_write;
 					}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e326e7efea391..dfaee211f6133 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -4413,6 +4413,12 @@ static inline bool f2fs_block_unit_discard(struct f2fs_sb_info *sbi)
 	return F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK;
 }
 
+static inline void f2fs_io_schedule_timeout(long timeout)
+{
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	io_schedule_timeout(timeout);
+}
+
 #define EFSBADCRC	EBADMSG		/* Bad CRC detected */
 #define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
 
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 5eca50e50e16b..cbdd8d0ec8960 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -313,8 +313,7 @@ void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
 skip:
 		iput(inode);
 	}
-	congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
-	cond_resched();
+	f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 	if (gc_failure) {
 		if (++looped >= count)
 			return;
@@ -789,8 +788,7 @@ int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
 		do {
 			ret = __submit_flush_wait(sbi, FDEV(i).bdev);
 			if (ret)
-				congestion_wait(BLK_RW_ASYNC,
-						DEFAULT_IO_TIMEOUT);
+				f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 		} while (ret && --count);
 
 		if (ret) {
@@ -3106,7 +3104,7 @@ static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
 			blk_finish_plug(&plug);
 			mutex_unlock(&dcc->cmd_lock);
 			trimmed += __wait_all_discard_cmd(sbi, NULL);
-			congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+			f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 			goto next;
 		}
 skip:
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 5160bf4f4a3ec..df1e5496352c2 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2168,8 +2168,7 @@ static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
 	/* we should flush all the data to keep data consistency */
 	do {
 		sync_inodes_sb(sbi->sb);
-		cond_resched();
-		congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+		f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 	} while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
 
 	if (unlikely(retry < 0))
@@ -2540,8 +2539,7 @@ static ssize_t f2fs_quota_write(struct super_block *sb, int type,
 							&page, &fsdata);
 		if (unlikely(err)) {
 			if (err == -ENOMEM) {
-				congestion_wait(BLK_RW_ASYNC,
-						DEFAULT_IO_TIMEOUT);
+				f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 				goto retry;
 			}
 			set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
-- 
2.43.0