From 3db3c3fb840ed4a6c7666d1464959edd40fe54f1 Mon Sep 17 00:00:00 2001 From: Tetsuhiro Kohada Date: Tue, 23 Jun 2020 15:22:19 +0900 Subject: exfat: write multiple sectors at once Write multiple sectors at once when updating dir-entries. Add exfat_update_bhs() for that. It wait for write completion once instead of sector by sector. It's only effective if sync enabled. Signed-off-by: Tetsuhiro Kohada Signed-off-by: Namjae Jeon --- fs/exfat/misc.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'fs/exfat/misc.c') diff --git a/fs/exfat/misc.c b/fs/exfat/misc.c index 8a3dde59052b..d34e6193258d 100644 --- a/fs/exfat/misc.c +++ b/fs/exfat/misc.c @@ -172,6 +172,25 @@ void exfat_update_bh(struct buffer_head *bh, int sync) sync_dirty_buffer(bh); } +int exfat_update_bhs(struct buffer_head **bhs, int nr_bhs, int sync) +{ + int i, err = 0; + + for (i = 0; i < nr_bhs; i++) { + set_buffer_uptodate(bhs[i]); + mark_buffer_dirty(bhs[i]); + if (sync) + write_dirty_buffer(bhs[i], 0); + } + + for (i = 0; i < nr_bhs && sync; i++) { + wait_on_buffer(bhs[i]); + if (!err && !buffer_uptodate(bhs[i])) + err = -EIO; + } + return err; +} + void exfat_chain_set(struct exfat_chain *ec, unsigned int dir, unsigned int size, unsigned char flags) { -- cgit v1.2.3