asgardius/android_kernel_motorola_sm6225
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

f2fs: check if inode state is dirty at fsync

Browse source 
If inode state is dirty, go straight to write.

Suggested-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Changman Lee 2014-12-08 15:29:40 +09:00 committed by Jaegeuk Kim
parent 8dcf2ff721
commit 9c7bb70212
1 changed files with 19 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
fs/f2fs/file.c
View file

@ -138,6 +138,17 @@ static inline bool need_do_checkpoint(struct inode *inode)
return need_cp;
}
static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
{
struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
bool ret = false;
/* But we need to avoid that there are some inode updates */
if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
ret = true;
f2fs_put_page(i, 0);
return ret;
}
int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
{
struct inode *inode = file->f_mapping->host;
@ -168,19 +179,21 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
return ret;
}
/* if the inode is dirty, let's recover all the time */
if (!datasync && is_inode_flag_set(fi, FI_DIRTY_INODE)) {
update_inode_page(inode);
goto go_write;
}
/*
* if there is no written data, don't waste time to write recovery info.
*/
if (!is_inode_flag_set(fi, FI_APPEND_WRITE) &&
!exist_written_data(sbi, ino, APPEND_INO)) {
struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
/* But we need to avoid that there are some inode updates */
if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) {
f2fs_put_page(i, 0);
/* it may call write_inode just prior to fsync */
if (need_inode_page_update(sbi, ino))
goto go_write;
}
f2fs_put_page(i, 0);
if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||
exist_written_data(sbi, ino, UPDATE_INO))