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Message-Id: <20230116130225.34600-1-frank.li@vivo.com>
Date: Mon, 16 Jan 2023 21:02:25 +0800
From: Yangtao Li <frank.li@...o.com>
To: jaegeuk@...nel.org, chao@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Yangtao Li <frank.li@...o.com>,
kernel test robot <lkp@...el.com>,
Dan Carpenter <error27@...il.com>
Subject: [PATCH v2 2/2] f2fs: use iostat_lat_type directly as a parameter in the iostat_update_and_unbind_ctx()
Convert to use iostat_lat_type as parameter instead of raw number.
BTW, move NUM_PREALLOC_IOSTAT_CTXS to the header file, and rename
iotype to page_type to match the definition.
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <error27@...il.com>
Signed-off-by: Yangtao Li <frank.li@...o.com>
---
fs/f2fs/data.c | 4 ++--
fs/f2fs/iostat.c | 36 ++++++++++++------------------------
fs/f2fs/iostat.h | 19 ++++++++++---------
3 files changed, 24 insertions(+), 35 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c940da1c540f..6153647d93b0 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, 0);
+ iostat_update_and_unbind_ctx(bio, READ_IO);
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, 1);
+ iostat_update_and_unbind_ctx(bio, bio->bi_opf & REQ_SYNC ? WRITE_SYNC_IO : WRITE_ASYNC_IO);
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 e9a3df7ce4d9..bc6a9c80a026 100644
--- a/fs/f2fs/iostat.c
+++ b/fs/f2fs/iostat.c
@@ -14,7 +14,6 @@
#include "iostat.h"
#include <trace/events/f2fs.h>
-#define NUM_PREALLOC_IOSTAT_CTXS 128
static struct kmem_cache *bio_iostat_ctx_cache;
static mempool_t *bio_iostat_ctx_pool;
@@ -210,54 +209,43 @@ void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
}
static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx,
- int rw, bool is_sync)
+ enum iostat_lat_type lat_type)
{
unsigned long ts_diff;
- unsigned int iotype = iostat_ctx->type;
+ unsigned int page_type = iostat_ctx->type;
struct f2fs_sb_info *sbi = iostat_ctx->sbi;
struct iostat_lat_info *io_lat = sbi->iostat_io_lat;
- int idx;
unsigned long flags;
if (!sbi->iostat_enable)
return;
ts_diff = jiffies - iostat_ctx->submit_ts;
- if (iotype == META_FLUSH)
- iotype = META;
-
- if (rw == 0) {
- idx = READ_IO;
- } else {
- if (is_sync)
- idx = WRITE_SYNC_IO;
- else
- idx = WRITE_ASYNC_IO;
- }
+ if (page_type == META_FLUSH)
+ page_type = META;
- if (iotype >= NR_PAGE_TYPE) {
+ if (lat_type >= MAX_IO_TYPE || page_type >= NR_PAGE_TYPE) {
f2fs_bug_on(sbi, 1);
return;
}
spin_lock_irqsave(&sbi->iostat_lat_lock, flags);
- io_lat->sum_lat[idx][iotype] += ts_diff;
- io_lat->bio_cnt[idx][iotype]++;
- if (ts_diff > io_lat->peak_lat[idx][iotype])
- io_lat->peak_lat[idx][iotype] = ts_diff;
+ io_lat->sum_lat[lat_type][page_type] += ts_diff;
+ io_lat->bio_cnt[lat_type][page_type]++;
+ if (ts_diff > io_lat->peak_lat[lat_type][page_type])
+ io_lat->peak_lat[lat_type][page_type] = ts_diff;
spin_unlock_irqrestore(&sbi->iostat_lat_lock, flags);
}
-void iostat_update_and_unbind_ctx(struct bio *bio, int rw)
+void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type lat_type)
{
struct bio_iostat_ctx *iostat_ctx = bio->bi_private;
- bool is_sync = bio->bi_opf & REQ_SYNC;
- if (rw == 0)
+ if (lat_type == READ_IO)
bio->bi_private = iostat_ctx->post_read_ctx;
else
bio->bi_private = iostat_ctx->sbi;
- __update_iostat_latency(iostat_ctx, rw, is_sync);
+ __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 2c048307b6e0..1f827a2fe6b2 100644
--- a/fs/f2fs/iostat.h
+++ b/fs/f2fs/iostat.h
@@ -8,20 +8,21 @@
struct bio_post_read_ctx;
+enum iostat_lat_type {
+ READ_IO = 0,
+ WRITE_SYNC_IO,
+ WRITE_ASYNC_IO,
+ MAX_IO_TYPE,
+};
+
#ifdef CONFIG_F2FS_IOSTAT
+#define NUM_PREALLOC_IOSTAT_CTXS 128
#define DEFAULT_IOSTAT_PERIOD_MS 3000
#define MIN_IOSTAT_PERIOD_MS 100
/* maximum period of iostat tracing is 1 day */
#define MAX_IOSTAT_PERIOD_MS 8640000
-enum {
- READ_IO,
- WRITE_SYNC_IO,
- WRITE_ASYNC_IO,
- MAX_IO_TYPE,
-};
-
struct iostat_lat_info {
unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */
unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */
@@ -57,7 +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, int rw);
+extern void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type type);
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);
@@ -67,7 +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, int rw) {}
+static inline void iostat_update_and_unbind_ctx(struct bio *bio, enum iostat_lat_type type) {}
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
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