[PATCH 2/4] mm: speed up mremap by 500x on large regions (v2)
Christoph Hellwig
hch at infradead.org
Mon Oct 15 20:42:09 AEDT 2018
On Fri, Oct 12, 2018 at 06:31:58PM -0700, Joel Fernandes (Google) wrote:
> Android needs to mremap large regions of memory during memory management
> related operations.
Just curious: why?
> + if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)
> + || old_end - old_addr < PMD_SIZE)
The || goes on the first line.
> + } else if (extent == PMD_SIZE && IS_ENABLED(CONFIG_HAVE_MOVE_PMD)) {
Overly long line.
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