btrfs: remove move_pages()

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move_pages() has an inefficient backwards byte copy of regions of two
different pages.  They're different pages so the regions won't overlap
and it could use memcpy().

At that point, though, move_pages() would be a slightly dimmer
re-implementation of copy_pages() that lacked the test for overlapping
page regions.

So remove move_pages() and just call copy_pages().

Signed-off-by: Zach Brown <zab@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

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Zach Brown 2013-10-16 12:10:33 -07:00 • committed by Chris Mason

parent 4546bcaeba

commit 1877e1a747

1 changed files with 1 additions and 18 deletions

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19

fs/btrfs/extent_io.c

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