btrfs: send: update comment at find_extent_clone()

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We have this unclear comment at find_extent_clone() about extents starting
at a file offset greater than or equals to the i_size of the inode. It's
not really informative and it's misleading, since it mentions the author
found such extents with snapshots and large files.

Such extents are a result of fallocate with FALLOC_FL_KEEP_SIZE and there
is no relation to snapshots or large files (all write paths update the
i_size before inserting a new file extent item). So update the comment to
be precise about it and why we don't bother looking for clone sources in
that case.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Filipe Manana 2022-11-01 16:15:42 +00:00 • committed by David Sterba

parent 61ce908a3c

commit d3f41317f0

1 changed files with 7 additions and 7 deletions

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fs/btrfs/send.c

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