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From: Qu Wenruo <wqu@suse.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH v3 09/13] btrfs: make alloc_extent_buffer() check subpage dirty bitmap
Date: Thu, 25 Mar 2021 15:14:41 +0800	[thread overview]
Message-ID: <20210325071445.90896-10-wqu@suse.com> (raw)
In-Reply-To: <20210325071445.90896-1-wqu@suse.com>

In alloc_extent_buffer(), we make sure that the newly allocated page is
never dirty.

This is fine for sector size == PAGE_SIZE case, but for subpage it's
possible that one extent buffer in the page is dirty, thus the whole
page is marked dirty, and could cause false alert.

To support subpage, call btrfs_page_test_dirty() to handle both cases.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/extent_io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7ad2169e7487..7c195d8dc07b 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -5665,7 +5665,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
 		btrfs_page_inc_eb_refs(fs_info, p);
 		spin_unlock(&mapping->private_lock);
 
-		WARN_ON(PageDirty(p));
+		WARN_ON(btrfs_page_test_dirty(fs_info, p, eb->start, eb->len));
 		eb->pages[i] = p;
 		if (!PageUptodate(p))
 			uptodate = 0;
-- 
2.30.1


  parent reply	other threads:[~2021-03-25  7:16 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-25  7:14 [PATCH v3 00/13] btrfs: support read-write for subpage metadata Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 01/13] btrfs: add sysfs interface for supported sectorsize Qu Wenruo
2021-03-25 14:41   ` Anand Jain
2021-03-29 18:20     ` David Sterba
2021-04-01 22:32       ` Anand Jain
2021-04-01 17:56   ` David Sterba
2021-03-25  7:14 ` [PATCH v3 02/13] btrfs: use min() to replace open-code in btrfs_invalidatepage() Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 03/13] btrfs: remove unnecessary variable shadowing " Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 04/13] btrfs: refactor how we iterate ordered extent " Qu Wenruo
2021-04-02  1:15   ` Anand Jain
2021-04-02  3:33     ` Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 05/13] btrfs: introduce helpers for subpage dirty status Qu Wenruo
2021-04-01 18:11   ` David Sterba
2021-03-25  7:14 ` [PATCH v3 06/13] btrfs: introduce helpers for subpage writeback status Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 07/13] btrfs: allow btree_set_page_dirty() to do more sanity check on subpage metadata Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 08/13] btrfs: support subpage metadata csum calculation at write time Qu Wenruo
2021-03-25  7:14 ` Qu Wenruo [this message]
2021-03-25  7:14 ` [PATCH v3 10/13] btrfs: make the page uptodate assert to be subpage compatible Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 11/13] btrfs: make set/clear_extent_buffer_dirty() " Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 12/13] btrfs: make set_btree_ioerr() accept extent buffer and " Qu Wenruo
2021-03-25  7:14 ` [PATCH v3 13/13] btrfs: add subpage overview comments Qu Wenruo
2021-03-25 12:20 ` [PATCH v3 00/13] btrfs: support read-write for subpage metadata Neal Gompa
2021-03-25 13:16   ` Qu Wenruo
2021-03-28 20:02     ` Ritesh Harjani
2021-03-29  2:01       ` Qu Wenruo
2021-04-02  1:39         ` Anand Jain
2021-04-02  3:26           ` Qu Wenruo
2021-04-02  8:33         ` Ritesh Harjani
2021-04-02  8:36           ` Qu Wenruo
2021-04-02  8:46             ` Ritesh Harjani
2021-04-02  8:52               ` Qu Wenruo
2021-04-12 11:33                 ` Qu Wenruo
2021-04-15  3:44                   ` riteshh
2021-04-15 14:52                     ` riteshh
2021-04-15 23:19                       ` Qu Wenruo
2021-04-15 23:34                         ` Qu Wenruo
2021-04-16  1:34                           ` Qu Wenruo
2021-04-16  5:50                             ` riteshh
2021-04-16  6:14                               ` Qu Wenruo
2021-04-16 16:52                                 ` riteshh
2021-04-19  5:59                                   ` riteshh
2021-04-19  6:16                                     ` Qu Wenruo
2021-04-19  7:04                                       ` riteshh
2021-04-19  7:19                                       ` Qu Wenruo
2021-04-19 13:24                                         ` Qu Wenruo
2021-04-21  7:03                                           ` riteshh
2021-04-21  7:15                                             ` Qu Wenruo
2021-04-21  7:30                                             ` riteshh
2021-04-21  8:26                                               ` Qu Wenruo
2021-04-21 11:13                                                 ` riteshh
2021-04-21 11:42                                                   ` Qu Wenruo
2021-04-21 12:15                                                     ` riteshh
2021-03-29 18:53 ` David Sterba
2021-04-01  5:36   ` Qu Wenruo
2021-04-01 17:55     ` David Sterba
2021-04-02  1:27     ` Anand Jain
2021-04-03 11:08 ` David Sterba
2021-04-05  6:14   ` Qu Wenruo
2021-04-06  2:31     ` Anand Jain
2021-04-06 19:20       ` David Sterba
2021-04-06 23:59       ` Qu Wenruo
2021-04-06 19:13     ` David Sterba

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