tree e0d7c17f699accbf7562c173fd5c64cad1d110aa
parent bc53008eea55330f485c956338d3c59f96c70c08
author Wei Yang <richard.weiyang@gmail.com> 1651212964 -0700
committer akpm <akpm@linux-foundation.org> 1651212964 -0700

mm/vmscan: sc->reclaim_idx must be a valid zone index

lruvec_lru_size() is only used in get_scan_count(), so the only possible
zone_idx is sc->reclaim_idx.  Since sc->reclaim_idx is ensured to be a
valid zone idex, we can remove the extra check for zone iteration.

Link: https://lkml.kernel.org/r/20220317234624.23358-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>