btrfs: fix error handling of fallback uncompress write

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[ Upstream commit 71aa147b4d ]

When cow_file_range() fails in the middle of the allocation loop, it
unlocks the pages but leaves the ordered extents intact. Thus, we need
to call btrfs_cleanup_ordered_extents() to finish the created ordered
extents.

Also, we need to call end_extent_writepage() if locked_page is available
because btrfs_cleanup_ordered_extents() never processes the region on
the locked_page.

Furthermore, we need to set the mapping as error if locked_page is
unavailable before unlocking the pages, so that the errno is properly
propagated to the user space.

CC: stable@vger.kernel.org # 5.18+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Naohiro Aota 2022-06-21 15:41:01 +09:00 • committed by Greg Kroah-Hartman

parent e160aa87c8

commit 9fff2b774e

1 changed files with 15 additions and 2 deletions

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fs/btrfs/inode.c

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