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f2fs: flush inode metadata when checkpoint is doing 

This patch registers all the inodes which have dirty metadata to sync when
checkpoint is doing.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-05-20 11:10:10 -07:00
parent 205b98221c
commit 0f18b462b2
7 changed files with 107 additions and 7 deletions
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36
fs/f2fs/checkpoint.c
View File

@ -859,6 +859,34 @@ retry:
goto retry;
}
int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
{
struct list_head *head = &sbi->inode_list[DIRTY_META];
struct inode *inode;
struct f2fs_inode_info *fi;
s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
while (total--) {
if (unlikely(f2fs_cp_error(sbi)))
return -EIO;
spin_lock(&sbi->inode_lock[DIRTY_META]);
if (list_empty(head)) {
spin_unlock(&sbi->inode_lock[DIRTY_META]);
return 0;
}
fi = list_entry(head->next, struct f2fs_inode_info,
gdirty_list);
inode = igrab(&fi->vfs_inode);
spin_unlock(&sbi->inode_lock[DIRTY_META]);
if (inode) {
update_inode_page(inode);
iput(inode);
}
};
return 0;
}
/*
* Freeze all the FS-operations for checkpoint.
*/
@ -885,6 +913,14 @@ retry_flush_dents:
goto retry_flush_dents;
}
if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
f2fs_unlock_all(sbi);
err = f2fs_sync_inode_meta(sbi);
if (err)
goto out;
goto retry_flush_dents;
}
/*
* POR: we should ensure that there are no dirty node pages
* until finishing nat/sit flush.

5
fs/f2fs/debug.c
View File

@ -47,6 +47,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
si->wb_bios = atomic_read(&sbi->nr_wb_bios);
si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
@ -304,8 +305,8 @@ static int stat_show(struct seq_file *s, void *v)
si->inmem_pages, si->wb_bios);
seq_printf(s, " - nodes: %4lld in %4d\n",
si->ndirty_node, si->node_pages);
seq_printf(s, " - dents: %4lld in dirs:%4d\n",
si->ndirty_dent, si->ndirty_dirs);
seq_printf(s, " - dents: %4lld in dirs:%4d (%4d)\n",
si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
seq_printf(s, " - datas: %4lld in files:%4d\n",
si->ndirty_data, si->ndirty_files);
seq_printf(s, " - meta: %4lld in %4d\n",

9
fs/f2fs/f2fs.h
View File

@ -442,7 +442,8 @@ struct f2fs_inode_info {
nid_t i_xattr_nid; /* node id that contains xattrs */
unsigned long long xattr_ver; /* cp version of xattr modification */
struct list_head dirty_list; /* linked in global dirty list */
struct list_head dirty_list; /* dirty list for dirs and files */
struct list_head gdirty_list; /* linked in global dirty list */
struct list_head inmem_pages; /* inmemory pages managed by f2fs */
struct mutex inmem_lock; /* lock for inmemory pages */
struct extent_tree *extent_tree; /* cached extent_tree entry */
@ -657,6 +658,7 @@ enum count_type {
F2FS_DIRTY_NODES,
F2FS_DIRTY_META,
F2FS_INMEM_PAGES,
F2FS_DIRTY_IMETA,
NR_COUNT_TYPE,
};
@ -707,6 +709,7 @@ struct f2fs_bio_info {
enum inode_type {
DIR_INODE, /* for dirty dir inode */
FILE_INODE, /* for dirty regular/symlink inode */
DIRTY_META, /* for all dirtied inode metadata */
NR_INODE_TYPE,
};
@ -1899,6 +1902,7 @@ static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
/*
* super.c
*/
void f2fs_inode_synced(struct inode *);
int f2fs_commit_super(struct f2fs_sb_info *, bool);
int f2fs_sync_fs(struct super_block *, int);
extern __printf(3, 4)
@ -2010,6 +2014,7 @@ void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
void release_ino_entry(struct f2fs_sb_info *, bool);
bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
int f2fs_sync_inode_meta(struct f2fs_sb_info *);
int acquire_orphan_inode(struct f2fs_sb_info *);
void release_orphan_inode(struct f2fs_sb_info *);
void add_orphan_inode(struct f2fs_sb_info *, nid_t);
@ -2078,7 +2083,7 @@ struct f2fs_stat_info {
unsigned long long hit_total, total_ext;
int ext_tree, zombie_tree, ext_node;
s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
unsigned int ndirty_dirs, ndirty_files;
unsigned int ndirty_dirs, ndirty_files, ndirty_all;
int nats, dirty_nats, sits, dirty_sits, fnids;
int total_count, utilization;
int bg_gc, wb_bios;

7
fs/f2fs/inode.c
View File

@ -262,7 +262,7 @@ int update_inode(struct inode *inode, struct page *node_page)
__set_inode_rdev(inode, ri);
set_cold_node(inode, node_page);
clear_inode_flag(inode, FI_DIRTY_INODE);
f2fs_inode_synced(inode);
/* deleted inode */
if (inode->i_nlink == 0)
@ -286,6 +286,7 @@ retry:
} else if (err != -ENOENT) {
f2fs_stop_checkpoint(sbi, false);
}
f2fs_inode_synced(inode);
return 0;
}
ret = update_inode(inode, node_page);
@ -360,6 +361,8 @@ retry:
goto retry;
}
if (err)
update_inode_page(inode);
sb_end_intwrite(inode->i_sb);
no_delete:
stat_dec_inline_xattr(inode);
@ -381,6 +384,8 @@ no_delete:
!exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
out_clear:
fscrypt_put_encryption_info(inode, NULL);
f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
clear_inode(inode);
}

1
fs/f2fs/node.c
View File

@ -670,6 +670,7 @@ static void truncate_node(struct dnode_of_data *dn)
if (dn->nid == dn->inode->i_ino) {
remove_orphan_inode(sbi, dn->nid);
dec_valid_inode_count(sbi);
f2fs_inode_synced(dn->inode);
} else {
sync_inode_page(dn);
}

2
fs/f2fs/segment.h
View File

@ -479,6 +479,8 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed)
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
node_secs += get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
return false;

54
fs/f2fs/super.c
View File

@ -537,6 +537,7 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
fi->i_advise = 0;
init_rwsem(&fi->i_sem);
INIT_LIST_HEAD(&fi->dirty_list);
INIT_LIST_HEAD(&fi->gdirty_list);
INIT_LIST_HEAD(&fi->inmem_pages);
mutex_init(&fi->inmem_lock);
@ -547,6 +548,8 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
static int f2fs_drop_inode(struct inode *inode)
{
int ret;
/*
* This is to avoid a deadlock condition like below.
* writeback_single_inode(inode)
@ -554,7 +557,7 @@ static int f2fs_drop_inode(struct inode *inode)
* - f2fs_gc -> iput -> evict
* - inode_wait_for_writeback(inode)
*/
if (!inode_unhashed(inode) && inode->i_state & I_SYNC) {
if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
if (!inode->i_nlink && !is_bad_inode(inode)) {
/* to avoid evict_inode call simultaneously */
atomic_inc(&inode->i_count);
@ -581,7 +584,20 @@ static int f2fs_drop_inode(struct inode *inode)
}
return 0;
}
return generic_drop_inode(inode);
ret = generic_drop_inode(inode);
if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
if (ret)
inode->i_state |= I_WILL_FREE;
spin_unlock(&inode->i_lock);
update_inode_page(inode);
spin_lock(&inode->i_lock);
if (ret)
inode->i_state &= ~I_WILL_FREE;
}
return ret;
}
/*
@ -591,7 +607,40 @@ static int f2fs_drop_inode(struct inode *inode)
*/
static void f2fs_dirty_inode(struct inode *inode, int flags)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
if (inode->i_ino == F2FS_NODE_INO(sbi) ||
inode->i_ino == F2FS_META_INO(sbi))
return;
spin_lock(&sbi->inode_lock[DIRTY_META]);
if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
spin_unlock(&sbi->inode_lock[DIRTY_META]);
return;
}
set_inode_flag(inode, FI_DIRTY_INODE);
list_add_tail(&F2FS_I(inode)->gdirty_list,
&sbi->inode_list[DIRTY_META]);
inc_page_count(sbi, F2FS_DIRTY_IMETA);
spin_unlock(&sbi->inode_lock[DIRTY_META]);
stat_inc_dirty_inode(sbi, DIRTY_META);
}
void f2fs_inode_synced(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
spin_lock(&sbi->inode_lock[DIRTY_META]);
if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
spin_unlock(&sbi->inode_lock[DIRTY_META]);
return;
}
list_del_init(&F2FS_I(inode)->gdirty_list);
clear_inode_flag(inode, FI_DIRTY_INODE);
dec_page_count(sbi, F2FS_DIRTY_IMETA);
spin_unlock(&sbi->inode_lock[DIRTY_META]);
stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
}
static void f2fs_i_callback(struct rcu_head *head)
@ -1757,6 +1806,7 @@ try_onemore:
return 0;
free_kobj:
f2fs_sync_inode_meta(sbi);
kobject_del(&sbi->s_kobj);
kobject_put(&sbi->s_kobj);
wait_for_completion(&sbi->s_kobj_unregister);