From: Christoph Hellwig <hch@lst.de>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: Christoph Hellwig <hch@lst.de>, Chris Mason <clm@fb.com>,
Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org,
Johannes Thumshirn <johannes.thumshirn@wdc.com>,
Qu Wenruo <wqu@suse.com>
Subject: Re: [PATCH 15/21] btrfs: remove the extent_buffer lookup in btree block checksumming
Date: Fri, 26 May 2023 09:03:16 +0200 [thread overview]
Message-ID: <20230526070316.GA11445@lst.de> (raw)
In-Reply-To: <e288cd7d-2f49-f517-a406-b511cae36cb7@gmx.com>
On Fri, May 26, 2023 at 02:43:11PM +0800, Qu Wenruo wrote:
>>> Thus for any subpage mount, this would lead to transaction abort during
>>> metadata writeback.
>>>
>>> We have btrfs_page_clamp_test_uptodate() for this usage.
>>
>> True, this should use the sub page helper. Or maybe just drop
>> this assert altogether?
>
> It may be better to keep it, as there is also another case related to
> subpage fs got its PageUptodate and bitmaps de-synced.
>
> Thus the assert can have a chance to catch such problem.
Ok. I don't really think we need the clamp version here, though.
Does this work for you?
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index c461a46ac6f207..36d6b8d4b2c1fa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -269,7 +269,8 @@ blk_status_t btree_csum_one_bio(struct btrfs_bio *bbio)
if (WARN_ON_ONCE(found_start != eb->start))
return BLK_STS_IOERR;
- if (WARN_ON_ONCE(!PageUptodate(eb->pages[0])))
+ if (WARN_ON(!btrfs_page_test_uptodate(fs_info, eb->pages[0],
+ eb->start, eb->len)))
return BLK_STS_IOERR;
ASSERT(memcmp_extent_buffer(eb, fs_info->fs_devices->metadata_uuid,
next prev parent reply other threads:[~2023-05-26 7:03 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-03 15:24 simplify extent_buffer reading and writing v4 Christoph Hellwig
2023-05-03 15:24 ` [PATCH 01/21] btrfs: mark extent_buffer_under_io static Christoph Hellwig
2023-05-03 15:24 ` [PATCH 02/21] btrfs: fix sub-page error handling in end_bio_subpage_eb_writepage Christoph Hellwig
2023-05-03 15:24 ` [PATCH 03/21] btrfs: move setting the buffer uptodate out of validate_extent_buffer Christoph Hellwig
2023-05-03 15:24 ` [PATCH 04/21] btrfs: merge verify_parent_transid and btrfs_buffer_uptodate Christoph Hellwig
2023-05-03 15:24 ` [PATCH 05/21] btrfs: always read the entire extent_buffer Christoph Hellwig
2023-05-03 15:24 ` [PATCH 06/21] btrfs: don't use btrfs_bio_ctrl for extent buffer reading Christoph Hellwig
2023-05-03 15:24 ` [PATCH 07/21] btrfs: remove the mirror_num argument to btrfs_submit_compressed_read Christoph Hellwig
2023-05-03 15:24 ` [PATCH 08/21] btrfs: use a separate end_io handler for read_extent_buffer Christoph Hellwig
2023-05-03 15:24 ` [PATCH 09/21] btrfs: do not try to unlock the extent for non-subpage metadata reads Christoph Hellwig
2023-05-03 15:24 ` [PATCH 10/21] btrfs: return bool from lock_extent_buffer_for_io Christoph Hellwig
2023-05-23 18:43 ` David Sterba
2023-05-24 5:44 ` Christoph Hellwig
2023-05-26 13:34 ` David Sterba
2023-05-03 15:24 ` [PATCH 11/21] btrfs: submit a writeback bio per extent_buffer Christoph Hellwig
2023-05-03 15:24 ` [PATCH 12/21] btrfs: move page locking from lock_extent_buffer_for_io to write_one_eb Christoph Hellwig
2023-05-03 15:24 ` [PATCH 13/21] btrfs: don't use btrfs_bio_ctrl for extent buffer writing Christoph Hellwig
2023-05-23 18:45 ` David Sterba
2023-05-24 5:50 ` Christoph Hellwig
2023-05-26 13:15 ` David Sterba
2023-05-26 13:35 ` Christoph Hellwig
2023-05-03 15:24 ` [PATCH 14/21] btrfs: use a separate end_io handler for extent_buffer writing Christoph Hellwig
2023-05-11 15:02 ` Josef Bacik
2023-05-03 15:24 ` [PATCH 15/21] btrfs: remove the extent_buffer lookup in btree block checksumming Christoph Hellwig
2023-05-26 6:39 ` Qu Wenruo
2023-05-26 6:41 ` Christoph Hellwig
2023-05-26 6:43 ` Qu Wenruo
2023-05-26 7:03 ` Christoph Hellwig [this message]
2023-05-26 7:25 ` Qu Wenruo
2023-05-26 13:58 ` David Sterba
2023-05-03 15:24 ` [PATCH 16/21] btrfs: remove the io_pages field in struct extent_buffer Christoph Hellwig
2023-05-03 15:24 ` [PATCH 17/21] btrfs: stop using PageError for extent_buffers Christoph Hellwig
2023-05-03 15:24 ` [PATCH 18/21] btrfs: don't check for uptodate pages in read_extent_buffer_pages Christoph Hellwig
2023-05-03 15:24 ` [PATCH 19/21] btrfs: stop using lock_extent in btrfs_buffer_uptodate Christoph Hellwig
2023-05-03 15:24 ` [PATCH 20/21] btrfs: use per-buffer locking for extent_buffer reading Christoph Hellwig
2023-05-03 15:24 ` [PATCH 21/21] btrfs: merge write_one_subpage_eb into write_one_eb Christoph Hellwig
2023-05-11 15:08 ` simplify extent_buffer reading and writing v4 Josef Bacik
2023-05-23 19:42 ` David Sterba
-- strict thread matches above, loose matches on Subject: below --
2023-03-30 6:30 simplify extent_buffer reading and writing v3 Christoph Hellwig
2023-03-30 6:30 ` [PATCH 15/21] btrfs: remove the extent_buffer lookup in btree block checksumming Christoph Hellwig
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