Commit 3db3c3fb authored by Tetsuhiro Kohada's avatar Tetsuhiro Kohada Committed by Namjae Jeon
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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: default avatarTetsuhiro Kohada <kohada.t2@gmail.com>
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
parent 2c7f8937

fs/exfat/dir.c

+9 −6
Original line number Diff line number Diff line
@@ -606,13 +606,16 @@ void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es) 


void exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync)

{

	int i;

	int i, err = 0;



	for (i = 0; i < es->num_bh; i++) {

	if (es->modified)

			exfat_update_bh(es->bh[i], sync);

		err = exfat_update_bhs(es->bh, es->num_bh, sync);



	for (i = 0; i < es->num_bh; i++)

		if (err)

			bforget(es->bh[i]);

		else

			brelse(es->bh[i]);

	}

	kfree(es);

}

fs/exfat/exfat_fs.h

+1 −0
Original line number Diff line number Diff line
@@ -513,6 +513,7 @@ void exfat_set_entry_time(struct exfat_sb_info *sbi, struct timespec64 *ts, 
u16 exfat_calc_chksum16(void *data, int len, u16 chksum, int type);

u32 exfat_calc_chksum32(void *data, int len, u32 chksum, int type);

void exfat_update_bh(struct buffer_head *bh, int sync);

int exfat_update_bhs(struct buffer_head **bhs, int nr_bhs, int sync);

void exfat_chain_set(struct exfat_chain *ec, unsigned int dir,

		unsigned int size, unsigned char flags);

void exfat_chain_dup(struct exfat_chain *dup, struct exfat_chain *ec);

fs/exfat/misc.c

+19 −0
Original line number Diff line number Diff line
@@ -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)

{

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