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Commit f3156df9 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
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btrfs: make lock_extent_buffer_for_io() to be subpage compatible 



For subpage metadata, we don't use page locking at all.  So just skip
the page locking part for subpage.  The rest of the function can be
reused.

Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 35b6ddfa
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