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Date: Sat, 8 Nov 2014 23:36:06 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 2/5] f2fs: introduce the number of inode entries
This patch adds to monitor the number of ino entries.
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/checkpoint.c | 27 +++++++++++++++------------
fs/f2fs/debug.c | 4 +++-
fs/f2fs/f2fs.h | 2 +-
3 files changed, 19 insertions(+), 14 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index dd6a357..bcd686e 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -318,6 +318,8 @@ retry:
e->ino = ino;
list_add_tail(&e->list, &sbi->ino_list[type]);
+ if (type != ORPHAN_INO)
+ sbi->ino_num[type]++;
}
spin_unlock(&sbi->ino_lock[type]);
}
@@ -331,8 +333,7 @@ static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
if (e) {
list_del(&e->list);
radix_tree_delete(&sbi->ino_root[type], ino);
- if (type == ORPHAN_INO)
- sbi->n_orphans--;
+ sbi->ino_num[type]--;
spin_unlock(&sbi->ino_lock[type]);
kmem_cache_free(ino_entry_slab, e);
return;
@@ -373,6 +374,7 @@ void release_dirty_inode(struct f2fs_sb_info *sbi)
list_del(&e->list);
radix_tree_delete(&sbi->ino_root[i], e->ino);
kmem_cache_free(ino_entry_slab, e);
+ sbi->ino_num[i]--;
}
spin_unlock(&sbi->ino_lock[i]);
}
@@ -383,10 +385,10 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
int err = 0;
spin_lock(&sbi->ino_lock[ORPHAN_INO]);
- if (unlikely(sbi->n_orphans >= sbi->max_orphans))
+ if (unlikely(sbi->ino_num[ORPHAN_INO] >= sbi->max_orphans))
err = -ENOSPC;
else
- sbi->n_orphans++;
+ sbi->ino_num[ORPHAN_INO]++;
spin_unlock(&sbi->ino_lock[ORPHAN_INO]);
return err;
@@ -395,8 +397,8 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
void release_orphan_inode(struct f2fs_sb_info *sbi)
{
spin_lock(&sbi->ino_lock[ORPHAN_INO]);
- f2fs_bug_on(sbi, sbi->n_orphans == 0);
- sbi->n_orphans--;
+ f2fs_bug_on(sbi, sbi->ino_num[ORPHAN_INO] == 0);
+ sbi->ino_num[ORPHAN_INO]--;
spin_unlock(&sbi->ino_lock[ORPHAN_INO]);
}
@@ -460,11 +462,12 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
struct f2fs_orphan_block *orphan_blk = NULL;
unsigned int nentries = 0;
unsigned short index;
- unsigned short orphan_blocks =
- (unsigned short)GET_ORPHAN_BLOCKS(sbi->n_orphans);
+ unsigned short orphan_blocks;
struct page *page = NULL;
struct ino_entry *orphan = NULL;
+ orphan_blocks = GET_ORPHAN_BLOCKS(sbi->ino_num[ORPHAN_INO]);
+
for (index = 0; index < orphan_blocks; index++)
grab_meta_page(sbi, start_blk + index);
@@ -892,7 +895,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
else
clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
- orphan_blocks = GET_ORPHAN_BLOCKS(sbi->n_orphans);
+ orphan_blocks = GET_ORPHAN_BLOCKS(sbi->ino_num[ORPHAN_INO]);
ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
orphan_blocks);
@@ -908,7 +911,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
orphan_blocks);
}
- if (sbi->n_orphans)
+ if (sbi->ino_num[ORPHAN_INO])
set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
else
clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
@@ -943,7 +946,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_put_page(cp_page, 1);
}
- if (sbi->n_orphans) {
+ if (sbi->ino_num[ORPHAN_INO]) {
write_orphan_inodes(sbi, start_blk);
start_blk += orphan_blocks;
}
@@ -1045,6 +1048,7 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC);
spin_lock_init(&sbi->ino_lock[i]);
INIT_LIST_HEAD(&sbi->ino_list[i]);
+ sbi->ino_num[i] = 0;
}
/*
@@ -1053,7 +1057,6 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
* orphan entries with the limitation one reserved segment
* for cp pack we can have max 1020*504 orphan entries
*/
- sbi->n_orphans = 0;
sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK;
}
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 86e6e92..74a0d78 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -119,6 +119,7 @@ static void update_mem_info(struct f2fs_sb_info *sbi)
{
struct f2fs_stat_info *si = F2FS_STAT(sbi);
unsigned npages;
+ int i;
if (si->base_mem)
goto get_cache;
@@ -168,8 +169,9 @@ get_cache:
si->cache_mem += npages << PAGE_CACHE_SHIFT;
npages = META_MAPPING(sbi)->nrpages;
si->cache_mem += npages << PAGE_CACHE_SHIFT;
- si->cache_mem += sbi->n_orphans * sizeof(struct ino_entry);
si->cache_mem += sbi->n_dirty_dirs * sizeof(struct dir_inode_entry);
+ for (i = 0; i <= UPDATE_INO; i++)
+ si->cache_mem += sbi->ino_num[i] * sizeof(struct ino_entry);
}
static int stat_show(struct seq_file *s, void *v)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index d45f3f4..994b87e 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -532,9 +532,9 @@ struct f2fs_sb_info {
struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
+ unsigned long ino_num[MAX_INO_ENTRY]; /* number of entries */
/* for orphan inode, use 0'th array */
- unsigned int n_orphans; /* # of orphan inodes */
unsigned int max_orphans; /* max orphan inodes */
/* for directory inode management */
--
2.1.1
--
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