btrfs: use clear_page where appropriate
There's a helper to clear whole page, with a arch-specific optimized code. The replaced cases do not seem to be in performace critical code, but we still might get some percent gain. Signed-off-by: David Sterba <dsterba@suse.com>
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@ -355,7 +355,7 @@ static void io_ctl_map_page(struct btrfs_io_ctl *io_ctl, int clear)
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io_ctl->orig = io_ctl->cur;
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io_ctl->orig = io_ctl->cur;
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io_ctl->size = PAGE_SIZE;
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io_ctl->size = PAGE_SIZE;
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if (clear)
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if (clear)
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memset(io_ctl->cur, 0, PAGE_SIZE);
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clear_page(io_ctl->cur);
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}
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}
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static void io_ctl_drop_pages(struct btrfs_io_ctl *io_ctl)
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static void io_ctl_drop_pages(struct btrfs_io_ctl *io_ctl)
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@ -1643,7 +1643,7 @@ static int scrub_write_page_to_dev_replace(struct scrub_block *sblock,
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if (spage->io_error) {
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if (spage->io_error) {
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void *mapped_buffer = kmap_atomic(spage->page);
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void *mapped_buffer = kmap_atomic(spage->page);
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memset(mapped_buffer, 0, PAGE_SIZE);
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clear_page(mapped_buffer);
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flush_dcache_page(spage->page);
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flush_dcache_page(spage->page);
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kunmap_atomic(mapped_buffer);
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kunmap_atomic(mapped_buffer);
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}
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}
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