btrfs: simplify error return logic when getting folio at prepare_one_folio()

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There's no need to have special logic to return -EAGAIN in case the call
to __filemap_get_folio() fails, because when FGP_NOWAIT is passed to
__filemap_get_folio() it returns ERR_PTR(-EAGAIN) if it needs to do
something that would imply blocking.

The reason we have this logic is from the days before we migrated to the
folio interface, when we called pagecache_get_page() which would return
NULL instead of an error pointer.

So remove this special casing and always return the error that the call
to __filemap_get_folio() returned.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Filipe Manana 2025-05-10 14:08:39 +01:00 • committed by David Sterba

parent 443e4d0e1c

commit 0f2bc22150

1 changed files with 3 additions and 7 deletions

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fs/btrfs/file.c

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