[014/227] f2fs: replace congestion_wait() calls with io_schedule_timeout()

Commit Message

Andrew Morton March 22, 2022, 9:39 p.m. UTC

From: NeilBrown <[e-mail]>
Subject: f2fs: replace congestion_wait() calls with io_schedule_timeout()

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/[e-mail]
Signed-off-by: NeilBrown <[e-mail]>
Cc: Anna Schumaker <[e-mail]>
Cc: Chao Yu <[e-mail]>
Cc: Darrick J. Wong <[e-mail]>
Cc: Ilya Dryomov <[e-mail]>
Cc: Jaegeuk Kim <[e-mail]>
Cc: Jan Kara <[e-mail]>
Cc: Jeff Layton <[e-mail]>
Cc: Jens Axboe <[e-mail]>
Cc: Lars Ellenberg <[e-mail]>
Cc: Miklos Szeredi <[e-mail]>
Cc: Paolo Valente <[e-mail]>
Cc: Philipp Reisner <[e-mail]>
Cc: Ryusuke Konishi <[e-mail]>
Cc: Trond Myklebust <[e-mail]>
Cc: Wu Fengguang <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 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(-)

Patch

--- a/fs/f2fs/compress.c~f2fs-replace-congestion_wait-calls-with-io_schedule_timeout
+++ a/fs/f2fs/compress.c
@@ -1505,9 +1505,7 @@  continue_unlock:
 				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;
--- a/fs/f2fs/data.c~f2fs-replace-congestion_wait-calls-with-io_schedule_timeout
+++ a/fs/f2fs/data.c
@@ -3047,8 +3047,7 @@  result:
 				} 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;
 					}
--- a/fs/f2fs/f2fs.h~f2fs-replace-congestion_wait-calls-with-io_schedule_timeout
+++ a/fs/f2fs/f2fs.h
@@ -4426,6 +4426,12 @@  static inline bool f2fs_block_unit_disca
 	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 */
 
--- a/fs/f2fs/segment.c~f2fs-replace-congestion_wait-calls-with-io_schedule_timeout
+++ a/fs/f2fs/segment.c
@@ -313,8 +313,7 @@  next:
 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;
@@ -803,8 +802,7 @@  int f2fs_flush_device_cache(struct f2fs_
 		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) {
@@ -3133,7 +3131,7 @@  next:
 			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:
--- a/fs/f2fs/super.c~f2fs-replace-congestion_wait-calls-with-io_schedule_timeout
+++ a/fs/f2fs/super.c
@@ -2135,8 +2135,7 @@  static void f2fs_enable_checkpoint(struc
 	/* 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))
@@ -2504,8 +2503,7 @@  retry:
 							&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);