FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-27 03:47:43 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

f2fs: skip unnecessary data writes during fsync

Browse Source 
This patch intends to improve the fsync performance by skipping remaining the
recovery information, only when there is no data that we should recover.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-07-24 19:08:02 -07:00
parent fff04f90c1
commit 6d99ba41a7
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
fs/f2fs/file.c
View File

@ -133,6 +133,17 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
return ret;
}
/*
* 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, inode->i_ino, APPEND_INO)) {
if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||
exist_written_data(sbi, inode->i_ino, UPDATE_INO))
goto flush_out;
goto out;
}
/* guarantee free sections for fsync */
f2fs_balance_fs(sbi);
@ -188,6 +199,13 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
ret = wait_on_node_pages_writeback(sbi, inode->i_ino);
if (ret)
goto out;
/* once recovery info is written, don't need to tack this */
remove_dirty_inode(sbi, inode->i_ino, APPEND_INO);
clear_inode_flag(fi, FI_APPEND_WRITE);
flush_out:
remove_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
clear_inode_flag(fi, FI_UPDATE_WRITE);
ret = f2fs_issue_flush(F2FS_SB(inode->i_sb));
}
out: