Change from v1
o use atomic_t inplace_count for more accurate suggested by Chao
-- >8 --
>From 7a42b27c8df45494e806d625be03830bfa8c30ff Mon Sep 17 00:00:00 2001
From: Changman Lee <cm224.lee@xxxxxxxxxxx>
Date: Wed, 24 Dec 2014 02:16:54 +0900
Subject: [PATCH] f2fs: add block count by in-place-update in stat info
This patch adds block count by in-place-update in stat.
Signed-off-by: Changman Lee <cm224.lee@xxxxxxxxxxx>
---
fs/f2fs/debug.c | 4 ++++
fs/f2fs/f2fs.h | 5 ++++-
fs/f2fs/segment.c | 1 +
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 91e8f69..2b64221 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -79,6 +79,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->segment_count[i] = sbi->segment_count[i];
si->block_count[i] = sbi->block_count[i];
}
+
+ si->inplace_count = atomic_read(&sbi->inplace_count);
}
/*
@@ -277,6 +279,7 @@ static int stat_show(struct seq_file *s, void *v)
for (j = 0; j < si->util_free; j++)
seq_putc(s, '-');
seq_puts(s, "]\n\n");
+ seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
seq_printf(s, "SSR: %u blocks in %u segments\n",
si->block_count[SSR], si->segment_count[SSR]);
seq_printf(s, "LFS: %u blocks in %u segments\n",
@@ -331,6 +334,7 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi)
atomic_set(&sbi->inline_inode, 0);
atomic_set(&sbi->inline_dir, 0);
+ atomic_set(&sbi->inplace_count, 0);
mutex_lock(&f2fs_stat_mutex);
list_add_tail(&si->stat_list, &f2fs_stat_list);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ec58bb2..72d2aab 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -589,6 +589,7 @@ struct f2fs_sb_info {
struct f2fs_stat_info *stat_info; /* FS status information */
unsigned int segment_count[2]; /* # of allocated segments */
unsigned int block_count[2]; /* # of allocated blocks */
+ atomic_t inplace_count; /* # of inplace update */
int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
atomic_t inline_inode; /* # of inline_data inodes */
atomic_t inline_dir; /* # of inline_dentry inodes */
@@ -1514,6 +1515,7 @@ struct f2fs_stat_info {
unsigned int segment_count[2];
unsigned int block_count[2];
+ unsigned int inplace_count;
unsigned base_mem, cache_mem;
};
@@ -1553,7 +1555,8 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
((sbi)->segment_count[(curseg)->alloc_type]++)
#define stat_inc_block_count(sbi, curseg) \
((sbi)->block_count[(curseg)->alloc_type]++)
-
+#define stat_inc_inplace_blocks(sbi) \
+ (atomic_inc(&(sbi)->inplace_count))
#define stat_inc_seg_count(sbi, type) \
do { \
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 42607a6..fd9bc96 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1235,6 +1235,7 @@ void write_data_page(struct page *page, struct dnode_of_data *dn,
void rewrite_data_page(struct page *page, block_t old_blkaddr,
struct f2fs_io_info *fio)
{
+ stat_inc_inplace_blocks(F2FS_P_SB(page));
f2fs_submit_page_mbio(F2FS_P_SB(page), page, old_blkaddr, fio);
}
--
1.9.1
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