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btrfs: move writeback_control::nr_to_write update to __extent_writepage

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Move the nr_to_write accounting from __extent_writepage_io to
__extent_writepage_io as we'll grow another __extent_writepage_io that
doesn't want this accounting soon.  Also drop the obsolete comment -
decrementing a counter in the on-stack writeback_control data structure
doesn't need the page lock.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2023-05-31 08:05:00 +02:00 committed by David Sterba
parent f22b5dcbd7
commit 9ecdbee819
1 changed files with 2 additions and 6 deletions
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8
fs/btrfs/extent_io.c
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@ -1370,12 +1370,6 @@ static noinline_for_stack int __extent_writepage_io(struct btrfs_inode *inode,
return 1;
}
/*
* we don't want to touch the inode after unlocking the page,
* so we update the mapping writeback index now
*/
bio_ctrl->wbc->nr_to_write--;
bio_ctrl->end_io_func = end_bio_extent_writepage;
while (cur <= end) {
u64 disk_bytenr;
@ -1521,6 +1515,8 @@ static int __extent_writepage(struct page *page, struct btrfs_bio_ctrl *bio_ctrl
if (ret == 1)
return 0;
bio_ctrl->wbc->nr_to_write--;
done:
if (nr == 0) {
/* make sure the mapping tag for page dirty gets cleared */