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f2fs: use percpu_counter for alloc_valid_block_count 

This patch uses percpu_count for sbi->alloc_valid_block_count.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-05-16 11:06:50 -07:00
parent 1beba1b3a9
commit 41382ec432
4 changed files with 14 additions and 8 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -1079,7 +1079,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
/* update user_block_counts */
sbi->last_valid_block_count = sbi->total_valid_block_count;
sbi->alloc_valid_block_count = 0;
percpu_counter_set(&sbi->alloc_valid_block_count, 0);
/* Here, we only have one bio having CP pack */
sync_meta_pages(sbi, META_FLUSH, LONG_MAX);

8
fs/f2fs/f2fs.h
View File

@ -808,7 +808,6 @@ struct f2fs_sb_info {
block_t user_block_count; /* # of user blocks */
block_t total_valid_block_count; /* # of valid blocks */
block_t alloc_valid_block_count; /* # of allocated blocks */
block_t discard_blks; /* discard command candidats */
block_t last_valid_block_count; /* for recovery */
u32 s_next_generation; /* for NFS support */
@ -816,6 +815,8 @@ struct f2fs_sb_info {
/* # of pages, see count_type */
struct percpu_counter nr_pages[NR_COUNT_TYPE];
/* # of allocated blocks */
struct percpu_counter alloc_valid_block_count;
struct f2fs_mount_info mount_opt; /* mount options */
@ -1141,8 +1142,9 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
inode->i_blocks += *count;
sbi->total_valid_block_count =
sbi->total_valid_block_count + (block_t)(*count);
sbi->alloc_valid_block_count += (block_t)(*count);
spin_unlock(&sbi->stat_lock);
percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
return true;
}
@ -1292,11 +1294,11 @@ static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
if (inode)
inode->i_blocks++;
sbi->alloc_valid_block_count++;
sbi->total_valid_node_count++;
sbi->total_valid_block_count++;
spin_unlock(&sbi->stat_lock);
percpu_counter_inc(&sbi->alloc_valid_block_count);
return true;
}

5
fs/f2fs/recovery.c
View File

@ -49,8 +49,9 @@ static struct kmem_cache *fsync_entry_slab;
bool space_for_roll_forward(struct f2fs_sb_info *sbi)
{
if (sbi->last_valid_block_count + sbi->alloc_valid_block_count
> sbi->user_block_count)
s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count);
if (sbi->last_valid_block_count + nalloc > sbi->user_block_count)
return false;
return true;
}

7
fs/f2fs/super.c
View File

@ -617,6 +617,7 @@ static void destroy_percpu_info(struct f2fs_sb_info *sbi)
for (i = 0; i < NR_COUNT_TYPE; i++)
percpu_counter_destroy(&sbi->nr_pages[i]);
percpu_counter_destroy(&sbi->alloc_valid_block_count);
}
static void f2fs_put_super(struct super_block *sb)
@ -1382,7 +1383,9 @@ static int init_percpu_info(struct f2fs_sb_info *sbi)
if (err)
return err;
}
return 0;
return percpu_counter_init(&sbi->alloc_valid_block_count, 0,
GFP_KERNEL);
}
/*
@ -1601,7 +1604,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
sbi->total_valid_block_count =
le64_to_cpu(sbi->ckpt->valid_block_count);
sbi->last_valid_block_count = sbi->total_valid_block_count;
sbi->alloc_valid_block_count = 0;
for (i = 0; i < NR_INODE_TYPE; i++) {
INIT_LIST_HEAD(&sbi->inode_list[i]);
spin_lock_init(&sbi->inode_lock[i]);