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f2fs: avoid freqeunt write_inode calls 

If update_inode is called, we don't need to do write_inode.
So, let's use a *dirty* flag for each inode.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-06-10 09:17:01 +09:00
parent d7cc950b4c
commit b3783873cc
4 changed files with 18 additions and 0 deletions
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1
fs/f2fs/f2fs.h
View File

@ -856,6 +856,7 @@ static inline int f2fs_clear_bit(unsigned int nr, char *addr)
/* used for f2fs_inode_info->flags */
enum {
FI_NEW_INODE, /* indicate newly allocated inode */
FI_DIRTY_INODE, /* indicate inode is dirty or not */
FI_INC_LINK, /* need to increment i_nlink */
FI_ACL_MODE, /* indicate acl mode */
FI_NO_ALLOC, /* should not allocate any blocks */

1
fs/f2fs/file.c
View File

@ -147,6 +147,7 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
} else {
/* if there is no written node page, write its inode page */
while (!sync_node_pages(sbi, inode->i_ino, &wbc)) {
mark_inode_dirty_sync(inode);
ret = f2fs_write_inode(inode, NULL);
if (ret)
goto out;

4
fs/f2fs/inode.c
View File

@ -192,6 +192,7 @@ void update_inode(struct inode *inode, struct page *node_page)
set_cold_node(inode, node_page);
set_page_dirty(node_page);
clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
}
int update_inode_page(struct inode *inode)
@ -217,6 +218,9 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
inode->i_ino == F2FS_META_INO(sbi))
return 0;
if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
return 0;
if (wbc)
f2fs_balance_fs(sbi);

12
fs/f2fs/super.c
View File

@ -112,6 +112,17 @@ static int f2fs_drop_inode(struct inode *inode)
return generic_drop_inode(inode);
}
/*
* f2fs_dirty_inode() is called from __mark_inode_dirty()
*
* We should call set_dirty_inode to write the dirty inode through write_inode.
*/
static void f2fs_dirty_inode(struct inode *inode, int flags)
{
set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
return;
}
static void f2fs_i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
@ -249,6 +260,7 @@ static struct super_operations f2fs_sops = {
.drop_inode = f2fs_drop_inode,
.destroy_inode = f2fs_destroy_inode,
.write_inode = f2fs_write_inode,
.dirty_inode = f2fs_dirty_inode,
.show_options = f2fs_show_options,
.evict_inode = f2fs_evict_inode,
.put_super = f2fs_put_super,