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f2fs: add need_dentry_mark 

This patch introduces need_dentry_mark() to clean up and avoid redundant
node locks.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-04-29 18:31:19 -07:00
parent 01f28610a1
commit 2dcf51ab2f
2 changed files with 21 additions and 21 deletions
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1
fs/f2fs/f2fs.h
View File

@ -1565,6 +1565,7 @@ struct dnode_of_data;
struct node_info;
bool available_free_memory(struct f2fs_sb_info *, int);
int need_dentry_mark(struct f2fs_sb_info *, nid_t);
bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);

41
fs/f2fs/node.c
View File

@ -195,6 +195,23 @@ static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
start, nr);
}
int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct nat_entry *e;
bool need = false;
down_read(&nm_i->nat_tree_lock);
e = __lookup_nat_cache(nm_i, nid);
if (e) {
if (!get_nat_flag(e, IS_CHECKPOINTED) &&
!get_nat_flag(e, HAS_FSYNCED_INODE))
need = true;
}
up_read(&nm_i->nat_tree_lock);
return need;
}
bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
@ -209,20 +226,6 @@ bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
return is_cp;
}
static bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct nat_entry *e;
bool fsynced = false;
down_read(&nm_i->nat_tree_lock);
e = __lookup_nat_cache(nm_i, ino);
if (e && get_nat_flag(e, HAS_FSYNCED_INODE))
fsynced = true;
up_read(&nm_i->nat_tree_lock);
return fsynced;
}
bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
@ -1206,13 +1209,9 @@ continue_unlock:
/* called by fsync() */
if (ino && IS_DNODE(page)) {
set_fsync_mark(page, 1);
if (IS_INODE(page)) {
if (!is_checkpointed_node(sbi, ino) &&
!has_fsynced_inode(sbi, ino))
set_dentry_mark(page, 1);
else
set_dentry_mark(page, 0);
}
if (IS_INODE(page))
set_dentry_mark(page,
need_dentry_mark(sbi, ino));
nwritten++;
} else {
set_fsync_mark(page, 0);