From: David Sterba <dsterba@suse.cz>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
Cc: David Sterba <dsterba@suse.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: [PATCH 3/5] btrfs: add helpers to get fs_info from page/folio pointers
Date: Tue, 30 Jan 2024 20:32:26 +0100 [thread overview]
Message-ID: <20240130193226.GE31555@twin.jikos.cz> (raw)
In-Reply-To: <2495e4f7-f389-46fa-a111-0e3e6deedaab@wdc.com>
On Tue, Jan 30, 2024 at 11:58:40AM +0000, Johannes Thumshirn wrote:
> On 29.01.24 19:34, David Sterba wrote:
> > @@ -1929,7 +1929,7 @@ int btree_write_cache_pages(struct address_space *mapping,
> > struct writeback_control *wbc)
> > {
> > struct btrfs_eb_write_context ctx = { .wbc = wbc };
> > - struct btrfs_fs_info *fs_info = BTRFS_I(mapping->host)->root->fs_info;
> > + struct btrfs_fs_info *fs_info = page_to_fs_info(mapping->host);
>
> This is wrong, page_to_fs_info() expects a struct page, but
> mapping->host gives you a struct inode.
Right, strange that it did not crash. We need the type checking for such
errors.
next prev parent reply other threads:[~2024-01-30 19:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-29 18:33 [PATCH 0/5] Struct to fs_info helpers David Sterba
2024-01-29 18:33 ` [PATCH 1/5] btrfs: tests: allocate dummy fs_info and root in test_find_delalloc() David Sterba
2024-01-29 18:33 ` [PATCH 2/5] btrfs: add helpers to get inode from page/folio pointers David Sterba
2024-01-30 11:42 ` Johannes Thumshirn
2024-01-30 19:29 ` David Sterba
2024-01-31 9:33 ` Johannes Thumshirn
2024-01-31 17:19 ` David Sterba
2024-01-29 18:33 ` [PATCH 3/5] btrfs: add helpers to get fs_info " David Sterba
2024-01-30 11:58 ` Johannes Thumshirn
2024-01-30 19:32 ` David Sterba [this message]
2024-01-29 18:33 ` [PATCH 4/5] btrfs: add helper to get fs_info from struct inode pointer David Sterba
2024-01-30 11:49 ` Johannes Thumshirn
2024-01-30 19:31 ` David Sterba
2024-01-31 7:23 ` David Sterba
2024-01-31 8:43 ` Qu Wenruo
2024-01-31 18:04 ` David Sterba
2024-01-29 18:33 ` [PATCH 5/5] btrfs: hoist fs_info out of loops in end_bbio_data_write and end_bbio_data_read David Sterba
-- strict thread matches above, loose matches on Subject: below --
2024-02-01 18:02 [PATCH 0/5 v2] Struct to fs_info helpers David Sterba
2024-02-01 18:02 ` [PATCH 3/5] btrfs: add helpers to get fs_info from page/folio pointers David Sterba
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