btrfs: scrub: Remove unused copy_nocow_pages and its callchain

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Since commit ac0b4145d6 ("btrfs: scrub: Don't use inode pages
for device replace") the function is not used and we can remove all
functions down the call chain.

There was an optimization that reused inode pages to speed up device
replace, but broke when there was nodatasum and compressed page. The
potential performance gain is small so we don't loose much by removing
it and using scrub_pages same as the other pages.

Signed-off-by: Qu Wenruo <wqu@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2018-06-06 13:13:12 +08:00 • committed by David Sterba

parent a944442c2b

commit 9bebe665c3

1 changed files with 0 additions and 365 deletions

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fs/btrfs/scrub.c

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