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From: Qu Wenruo <wqu@suse.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 10/27] btrfs: introduce submit_compressed_bio() for compression
Date: Tue, 13 Jul 2021 14:14:59 +0800	[thread overview]
Message-ID: <20210713061516.163318-11-wqu@suse.com> (raw)
In-Reply-To: <20210713061516.163318-1-wqu@suse.com>

The new helper, submit_compressed_bio(), will aggregate the following
work:

- Increase compressed_bio::pending_bios
- Remap the endio function
- Map and submit the bio

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/compression.c | 45 ++++++++++++++++++------------------------
 1 file changed, 19 insertions(+), 26 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 0ff7975ad874..5db5b7450d95 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -422,6 +422,21 @@ static void end_compressed_bio_write(struct bio *bio)
 	bio_put(bio);
 }
 
+static blk_status_t submit_compressed_bio(struct btrfs_fs_info *fs_info,
+					  struct compressed_bio *cb,
+					  struct bio *bio, int mirror_num)
+{
+	blk_status_t ret;
+
+	ASSERT(bio->bi_iter.bi_size);
+	atomic_inc(&cb->pending_bios);
+	ret = btrfs_bio_wq_end_io(fs_info, bio, BTRFS_WQ_ENDIO_DATA);
+	if (ret)
+		return ret;
+	ret = btrfs_map_bio(fs_info, bio, mirror_num);
+	return ret;
+}
+
 /*
  * worker function to build and submit bios for previously compressed pages.
  * The corresponding pages in the inode should be marked for writeback
@@ -517,19 +532,13 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
 
 		page->mapping = NULL;
 		if (submit || len < PAGE_SIZE) {
-			atomic_inc(&cb->pending_bios);
-			ret = btrfs_bio_wq_end_io(fs_info, bio,
-						  BTRFS_WQ_ENDIO_DATA);
-			if (ret)
-				goto finish_cb;
-
 			if (!skip_sum) {
 				ret = btrfs_csum_one_bio(inode, bio, start, 1);
 				if (ret)
 					goto finish_cb;
 			}
 
-			ret = btrfs_map_bio(fs_info, bio, 0);
+			ret = submit_compressed_bio(fs_info, cb, bio, 0);
 			if (ret)
 				goto finish_cb;
 
@@ -555,18 +564,13 @@ blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
 		cond_resched();
 	}
 
-	atomic_inc(&cb->pending_bios);
-	ret = btrfs_bio_wq_end_io(fs_info, bio, BTRFS_WQ_ENDIO_DATA);
-	if (ret)
-		goto last_bio;
-
 	if (!skip_sum) {
 		ret = btrfs_csum_one_bio(inode, bio, start, 1);
 		if (ret)
 			goto last_bio;
 	}
 
-	ret = btrfs_map_bio(fs_info, bio, 0);
+	ret = submit_compressed_bio(fs_info, cb, bio, 0);
 	if (ret)
 		goto last_bio;
 
@@ -872,12 +876,6 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 		if (submit || bio_add_page(comp_bio, page, pg_len, 0) < pg_len) {
 			unsigned int nr_sectors;
 
-			atomic_inc(&cb->pending_bios);
-			ret = btrfs_bio_wq_end_io(fs_info, comp_bio,
-						  BTRFS_WQ_ENDIO_DATA);
-			if (ret)
-				goto finish_cb;
-
 			ret = btrfs_lookup_bio_sums(inode, comp_bio, sums);
 			if (ret)
 				goto finish_cb;
@@ -886,7 +884,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 						  fs_info->sectorsize);
 			sums += fs_info->csum_size * nr_sectors;
 
-			ret = btrfs_map_bio(fs_info, comp_bio, mirror_num);
+			ret = submit_compressed_bio(fs_info, cb, comp_bio, mirror_num);
 			if (ret)
 				goto finish_cb;
 
@@ -900,16 +898,11 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 		cur_disk_byte += pg_len;
 	}
 
-	atomic_inc(&cb->pending_bios);
-	ret = btrfs_bio_wq_end_io(fs_info, comp_bio, BTRFS_WQ_ENDIO_DATA);
-	if (ret)
-		goto last_bio;
-
 	ret = btrfs_lookup_bio_sums(inode, comp_bio, sums);
 	if (ret)
 		goto last_bio;
 
-	ret = btrfs_map_bio(fs_info, comp_bio, mirror_num);
+	ret = submit_compressed_bio(fs_info, cb, comp_bio, mirror_num);
 	if (ret)
 		goto last_bio;
 
-- 
2.32.0


  parent reply	other threads:[~2021-07-13  6:15 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13  6:14 [PATCH 00/27] btrfs: limited subpage compressed write support Qu Wenruo
2021-07-13  6:14 ` [PATCH 01/27] btrfs: remove unused parameter @nr_pages in add_ra_bio_pages() Qu Wenruo
2021-07-13  6:14 ` [PATCH 02/27] btrfs: remove unnecessary parameter @delalloc_start for writepage_delalloc() Qu Wenruo
2021-07-13  6:14 ` [PATCH 03/27] btrfs: use async_chunk::async_cow to replace the confusing pending pointer Qu Wenruo
2021-07-13  7:36   ` Nikolay Borisov
2021-07-13  6:14 ` [PATCH 04/27] btrfs: don't pass compressed pages to btrfs_writepage_endio_finish_ordered() Qu Wenruo
2021-07-13  6:14 ` [PATCH 05/27] btrfs: make add_ra_bio_pages() to be subpage compatible Qu Wenruo
2021-07-13  6:14 ` [PATCH 06/27] btrfs: introduce compressed_bio::pending_sectors to trace compressed bio more elegantly Qu Wenruo
2021-07-13  6:14 ` [PATCH 07/27] btrfs: add subpage checked_bitmap to make PageChecked flag to be subpage compatible Qu Wenruo
2021-07-16  7:54   ` Qu Wenruo
2021-07-13  6:14 ` [PATCH 08/27] btrfs: handle errors properly inside btrfs_submit_compressed_read() Qu Wenruo
2021-07-13  6:14 ` [PATCH 09/27] btrfs: handle errors properly inside btrfs_submit_compressed_write() Qu Wenruo
2021-07-13  6:14 ` Qu Wenruo [this message]
2021-07-13  6:15 ` [PATCH 11/27] btrfs: introduce alloc_compressed_bio() for compression Qu Wenruo
2021-07-13  6:15 ` [PATCH 12/27] btrfs: make btrfs_submit_compressed_read() to determine stripe boundary at bio allocation time Qu Wenruo
2021-07-13  6:15 ` [PATCH 13/27] btrfs: make btrfs_submit_compressed_write() " Qu Wenruo
2021-07-13  6:15 ` [PATCH 14/27] btrfs: remove unused function btrfs_bio_fits_in_stripe() Qu Wenruo
2021-07-13  6:15 ` [PATCH 15/27] btrfs: refactor submit_compressed_extents() Qu Wenruo
2021-07-13  6:15 ` [PATCH 16/27] btrfs: cleanup for extent_write_locked_range() Qu Wenruo
2021-07-13  6:15 ` [PATCH 17/27] btrfs: make compress_file_range() to be subpage compatible Qu Wenruo
2021-07-13  6:15 ` [PATCH 18/27] btrfs: make btrfs_submit_compressed_write() " Qu Wenruo
2021-07-13  6:15 ` [PATCH 19/27] btrfs: make end_compressed_bio_writeback() to be subpage compatble Qu Wenruo
2021-07-13  6:15 ` [PATCH 20/27] btrfs: make extent_write_locked_range() to be subpage compatible Qu Wenruo
2021-07-13  6:15 ` [PATCH 21/27] btrfs: extract uncompressed async extent submission code into a new helper Qu Wenruo
2021-07-13  6:15 ` [PATCH 22/27] btrfs: rework lzo_compress_pages() to make it subpage compatible Qu Wenruo
2021-07-13  6:15 ` [PATCH 23/27] btrfs: teach __extent_writepage() to handle locked page differently Qu Wenruo
2021-07-13  6:15 ` [PATCH 24/27] btrfs: allow page to be unlocked by btrfs_page_end_writer_lock() even if it's locked by plain page_lock() Qu Wenruo
2021-07-13  6:15 ` [PATCH 25/27] btrfs: allow subpage to compress a range which only covers one page Qu Wenruo
2021-07-13  6:15 ` [PATCH 26/27] btrfs: don't run delalloc range which is beyond the locked_page to prevent deadlock for subpage compression Qu Wenruo
2021-07-13  6:15 ` [PATCH 27/27] btrfs: only allow subpage compression if the range is fully page aligned Qu Wenruo
2021-07-16  9:11 ` [PATCH 00/27] btrfs: limited subpage compressed write support Qu Wenruo
2021-07-20  5:00   ` Qu Wenruo

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