linux-kernel - [PATCH] f2fs: clean up parameters of iostat_update_and_unbind

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Message-Id: <20230131024444.2598081-1-chao@kernel.org>
Date:   Tue, 31 Jan 2023 10:44:44 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>
Subject: [PATCH] f2fs: clean up parameters of iostat_update_and_unbind_ctx()

Parsing sync/rw type from bio inside iostat_update_and_unbind_ctx()
to avoid unnecessary parameters.

Signed-off-by: Chao Yu <chao@...nel.org>
---
- this patch is based on
[PATCH v3] f2fs: use iostat_lat_type directly as a parameter in the iostat_update_and_unbind_ctx()
 fs/f2fs/data.c   |  4 ++--
 fs/f2fs/iostat.c | 14 ++++++++++----
 fs/f2fs/iostat.h |  4 ++--
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 89299efae812..fa83f1774048 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -292,7 +292,7 @@ static void f2fs_read_end_io(struct bio *bio)
 	struct bio_post_read_ctx *ctx;
 	bool intask = in_task();
 
-	iostat_update_and_unbind_ctx(bio, READ_IO);
+	iostat_update_and_unbind_ctx(bio);
 	ctx = bio->bi_private;
 
 	if (time_to_inject(sbi, FAULT_READ_IO))
@@ -330,7 +330,7 @@ static void f2fs_write_end_io(struct bio *bio)
 	struct bio_vec *bvec;
 	struct bvec_iter_all iter_all;
 
-	iostat_update_and_unbind_ctx(bio, bio->bi_opf & REQ_SYNC ? WRITE_SYNC_IO : WRITE_ASYNC_IO);
+	iostat_update_and_unbind_ctx(bio);
 	sbi = bio->bi_private;
 
 	if (time_to_inject(sbi, FAULT_WRITE_IO))
diff --git a/fs/f2fs/iostat.c b/fs/f2fs/iostat.c
index c767a2e7d5a9..14c8f1ec8c12 100644
--- a/fs/f2fs/iostat.c
+++ b/fs/f2fs/iostat.c
@@ -241,14 +241,20 @@ static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx,
 	spin_unlock_irqrestore(&sbi->iostat_lat_lock, flags);
 }
 
-void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type lat_type)
+void iostat_update_and_unbind_ctx(struct bio *bio)
 {
 	struct bio_iostat_ctx *iostat_ctx = bio->bi_private;
+	enum iostat_lat_type lat_type;
 
-	if (lat_type == READ_IO)
-		bio->bi_private = iostat_ctx->post_read_ctx;
-	else
+	if (op_is_write(bio_op(bio))) {
+		lat_type = bio->bi_opf & REQ_SYNC ?
+				WRITE_SYNC_IO : WRITE_ASYNC_IO;
 		bio->bi_private = iostat_ctx->sbi;
+	} else {
+		lat_type = READ_IO;
+		bio->bi_private = iostat_ctx->post_read_ctx;
+	}
+
 	__update_iostat_latency(iostat_ctx, lat_type);
 	mempool_free(iostat_ctx, bio_iostat_ctx_pool);
 }
diff --git a/fs/f2fs/iostat.h b/fs/f2fs/iostat.h
index 1f827a2fe6b2..eb99d05cf272 100644
--- a/fs/f2fs/iostat.h
+++ b/fs/f2fs/iostat.h
@@ -58,7 +58,7 @@ static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio)
 	return iostat_ctx->post_read_ctx;
 }
 
-extern void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type type);
+extern void iostat_update_and_unbind_ctx(struct bio *bio);
 extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi,
 		struct bio *bio, struct bio_post_read_ctx *ctx);
 extern int f2fs_init_iostat_processing(void);
@@ -68,7 +68,7 @@ extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi);
 #else
 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
 		enum iostat_type type, unsigned long long io_bytes) {}
-static inline void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type type) {}
+static inline void iostat_update_and_unbind_ctx(struct bio *bio) {}
 static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi,
 		struct bio *bio, struct bio_post_read_ctx *ctx) {}
 static inline void iostat_update_submit_ctx(struct bio *bio,
-- 
2.25.1