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authorTetsuhiro Kohada <kohada.t2@gmail.com>2020-06-23 15:22:19 +0900
committerNamjae Jeon <namjae.jeon@samsung.com>2020-08-12 08:31:11 +0900
commit3db3c3fb840ed4a6c7666d1464959edd40fe54f1 (patch)
tree930c8f0f2b33efc5752dc8587a3ca669af716591 /fs
parent2c7f8937ef91520a8a4bd700d5817b5e9c99803c (diff)
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 <kohada.t2@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/exfat/dir.c15
-rw-r--r--fs/exfat/exfat_fs.h1
-rw-r--r--fs/exfat/misc.c19
3 files changed, 29 insertions, 6 deletions
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c
index 97296bc2b241..542f1a5ab56f 100644
--- a/fs/exfat/dir.c
+++ b/fs/exfat/dir.c
@@ -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);
- brelse(es->bh[i]);
- }
+ if (es->modified)
+ 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);
}
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 05553b2924ee..af0f526eece7 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -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);
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)
{