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authorMatthew Wilcox (Oracle) <willy@infradead.org>2021-05-05 04:32:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-05 21:27:19 +0300
commit46be67b424efab933562a29ea8f1df0c20aa9959 (patch)
tree713adb555aa4835131938869e7fcc77d206cd132 /mm/workingset.c
parent7716506adac4664793a9d6d3dfa31ffddfa98714 (diff)
downloadlinux-46be67b424efab933562a29ea8f1df0c20aa9959.tar.xz
mm: stop accounting shadow entries
We no longer need to keep track of how many shadow entries are present in a mapping. This saves a few writes to the inode and memory barriers. Link: https://lkml.kernel.org/r/20201026151849.24232-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Tested-by: Vishal Verma <vishal.l.verma@intel.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/workingset.c')
-rw-r--r--mm/workingset.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/workingset.c b/mm/workingset.c
index cd39902c1062..b7cdeca5a76d 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -554,7 +554,6 @@ static enum lru_status shadow_lru_isolate(struct list_head *item,
goto out_invalid;
if (WARN_ON_ONCE(node->count != node->nr_values))
goto out_invalid;
- mapping->nrexceptional -= node->nr_values;
xa_delete_node(node, workingset_update_node);
__inc_lruvec_kmem_state(node, WORKINGSET_NODERECLAIM);