• Chao Yu's avatar
    f2fs: enhance multiple device flush · 39d787be
    Chao Yu authored
    When multiple device feature is enabled, during ->fsync we will issue
    flush in all devices to make sure node/data of the file being persisted
    into storage. But some flushes of device could be unneeded as file's
    data may be not writebacked into those devices. So this patch adds and
    manage bitmap per inode in global cache to indicate which device is
    dirty and it needs to issue flush during ->fsync, hence, we could improve
    performance of fsync in scenario of multiple device.
    Signed-off-by: 's avatarChao Yu <yuchao0@huawei.com>
    Signed-off-by: 's avatarJaegeuk Kim <jaegeuk@kernel.org>