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md-bitmap: Convert read_file_page and write_file_page to bh_submit()

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Avoid an extra indirect function call by using bh_submit() instead of
submit_bh().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20260528173150.1093780-31-willy@infradead.org
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: linux-raid@vger.kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2026-05-28 18:31:43 +01:00 committed by Christian Brauner
parent b9fa6916b1
commit 2dc07082e3
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 14 additions and 13 deletions
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27
drivers/md/md-bitmap.c
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@ -501,6 +501,18 @@ static void write_sb_page(struct bitmap *bitmap, unsigned long pg_index,
static void md_bitmap_file_kick(struct bitmap *bitmap);
#ifdef CONFIG_MD_BITMAP_FILE
static void end_bitmap_write(struct bio *bio)
{
struct buffer_head *bh;
bool uptodate = bio_endio_bh(bio, &bh);
struct bitmap *bitmap = bh->b_private;
if (!uptodate)
set_bit(BITMAP_WRITE_ERROR, &bitmap->flags);
if (atomic_dec_and_test(&bitmap->pending_writes))
wake_up(&bitmap->write_wait);
}
static void write_file_page(struct bitmap *bitmap, struct page *page, int wait)
{
struct buffer_head *bh = page_buffers(page);
@ -509,7 +521,7 @@ static void write_file_page(struct bitmap *bitmap, struct page *page, int wait)
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
submit_bh(REQ_OP_WRITE | REQ_SYNC, bh);
bh_submit(bh, REQ_OP_WRITE | REQ_SYNC, end_bitmap_write);
bh = bh->b_this_page;
}
@ -518,16 +530,6 @@ static void write_file_page(struct bitmap *bitmap, struct page *page, int wait)
atomic_read(&bitmap->pending_writes) == 0);
}
static void end_bitmap_write(struct buffer_head *bh, int uptodate)
{
struct bitmap *bitmap = bh->b_private;
if (!uptodate)
set_bit(BITMAP_WRITE_ERROR, &bitmap->flags);
if (atomic_dec_and_test(&bitmap->pending_writes))
wake_up(&bitmap->write_wait);
}
static void free_buffers(struct page *page)
{
struct buffer_head *bh;
@ -591,12 +593,11 @@ static int read_file_page(struct file *file, unsigned long index,
else
count -= blocksize;
bh->b_end_io = end_bitmap_write;
bh->b_private = bitmap;
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
submit_bh(REQ_OP_READ, bh);
bh_submit(bh, REQ_OP_READ, end_bitmap_write);
}
blk_cur++;
bh = bh->b_this_page;