btrfs: don't create inline extents in fallback_to_cow

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For NOCOW files, run_delalloc_nocow can still fall back to COW
allocations when required and calls to fallback_to_cow helper for
that.  For such an allocation we can have multiple ordered_extents
for existing extents that NOCOW overwrites and new allocations that
fallback_to_cow creates.  If one of the new extents is an inline
extent, the writepages could would have to avoid normal page writeback
for them as indicated by the page_started return argument, which
run_delalloc_nocow can't return.   Fix this by never creating inline
extents from fallback_to_cow.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>

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Christoph Hellwig 2023-06-28 17:31:23 +02:00 • committed by David Sterba

parent ba9145add5

commit 53ffb30a78

1 changed files with 23 additions and 19 deletions

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fs/btrfs/inode.c

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