Sometimes user want to sync all data belong to superblock into storage for persistence, 'syncfs' syscall is one option, still f2fs supports similar one through ioctl, difference is that sb releted kworker is online for writebacking concurrently.
Signed-off-by: Chao Yu <[email protected]> --- fs/f2fs/file.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index a60d088..91997a5 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1621,6 +1621,7 @@ static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct cp_control cpc; int err; + int flush_data; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -1628,6 +1629,15 @@ static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) if (f2fs_readonly(sbi->sb)) return -EROFS; + if (get_user(flush_data, (__u32 __user *)arg)) + return -EFAULT; + + if (flush_data) { + err = sync_dirty_inodes(sbi, FILE_INODE); + if (err) + return err; + } + cpc.reason = __get_cp_reason(sbi); mutex_lock(&sbi->gc_mutex); -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
