The patch titled
Subject: mm/swap: rename lru_pvecs to cpu_fbatches
has been added to the -mm mm-unstable branch. Its filename is
mm-swap-rename-lru_pvecs-to-cpu_fbatches.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-swap-rename-lru_pvecs-to-cpu_fbatches.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/swap: rename lru_pvecs to cpu_fbatches
Date: Fri, 17 Jun 2022 18:50:07 +0100
No change to generated code, but this struct no longer contains any
pagevecs, and not all the folio batches it contains are lru.
Link: https://lkml.kernel.org/r/20220617175020.717127-10-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 90 ++++++++++++++++++++++++++--------------------------
1 file changed, 46 insertions(+), 44 deletions(-)
--- a/mm/swap.c~mm-swap-rename-lru_pvecs-to-cpu_fbatches
+++ a/mm/swap.c
@@ -56,10 +56,10 @@ static DEFINE_PER_CPU(struct lru_rotate,
};
/*
- * The following struct pagevec are grouped together because they are protected
+ * The following folio batches are grouped together because they are protected
* by disabling preemption (and interrupts remain enabled).
*/
-struct lru_pvecs {
+struct cpu_fbatches {
local_lock_t lock;
struct folio_batch lru_add;
struct folio_batch lru_deactivate_file;
@@ -69,7 +69,7 @@ struct lru_pvecs {
struct folio_batch activate;
#endif
};
-static DEFINE_PER_CPU(struct lru_pvecs, lru_pvecs) = {
+static DEFINE_PER_CPU(struct cpu_fbatches, cpu_fbatches) = {
.lock = INIT_LOCAL_LOCK(lock),
};
@@ -361,7 +361,7 @@ static void folio_activate_fn(struct lru
#ifdef CONFIG_SMP
static void folio_activate_drain(int cpu)
{
- struct folio_batch *fbatch = &per_cpu(lru_pvecs.activate, cpu);
+ struct folio_batch *fbatch = &per_cpu(cpu_fbatches.activate, cpu);
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, folio_activate_fn);
@@ -374,10 +374,10 @@ static void folio_activate(struct folio
struct folio_batch *fbatch;
folio_get(folio);
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.activate);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.activate);
folio_batch_add_and_move(fbatch, folio, folio_activate_fn);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
}
@@ -404,8 +404,8 @@ static void __lru_cache_activate_folio(s
struct folio_batch *fbatch;
int i;
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.lru_add);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.lru_add);
/*
* Search backwards on the optimistic assumption that the folio being
@@ -426,7 +426,7 @@ static void __lru_cache_activate_folio(s
}
}
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
/*
@@ -452,7 +452,7 @@ void folio_mark_accessed(struct folio *f
} else if (!folio_test_active(folio)) {
/*
* If the folio is on the LRU, queue it for activation via
- * lru_pvecs.activate. Otherwise, assume the folio is in a
+ * cpu_fbatches.activate. Otherwise, assume the folio is in a
* folio_batch, mark it active and it'll be moved to the active
* LRU on the next drain.
*/
@@ -474,7 +474,7 @@ EXPORT_SYMBOL(folio_mark_accessed);
*
* Queue the folio for addition to the LRU. The decision on whether
* to add the page to the [in]active [file|anon] list is deferred until the
- * pagevec is drained. This gives a chance for the caller of folio_add_lru()
+ * folio_batch is drained. This gives a chance for the caller of folio_add_lru()
* have the folio added to the active list using folio_mark_accessed().
*/
void folio_add_lru(struct folio *folio)
@@ -486,10 +486,10 @@ void folio_add_lru(struct folio *folio)
VM_BUG_ON_FOLIO(folio_test_lru(folio), folio);
folio_get(folio);
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.lru_add);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.lru_add);
folio_batch_add_and_move(fbatch, folio, lru_add_fn);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
EXPORT_SYMBOL(folio_add_lru);
@@ -614,13 +614,13 @@ static void lru_lazyfree_fn(struct lruve
}
/*
- * Drain pages out of the cpu's pagevecs.
+ * Drain pages out of the cpu's folio_batch.
* Either "cpu" is the current CPU, and preemption has already been
* disabled; or "cpu" is being hot-unplugged, and is already dead.
*/
void lru_add_drain_cpu(int cpu)
{
- struct folio_batch *fbatch = &per_cpu(lru_pvecs.lru_add, cpu);
+ struct folio_batch *fbatch = &per_cpu(cpu_fbatches.lru_add, cpu);
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_add_fn);
@@ -636,15 +636,15 @@ void lru_add_drain_cpu(int cpu)
local_unlock_irqrestore(&lru_rotate.lock, flags);
}
- fbatch = &per_cpu(lru_pvecs.lru_deactivate_file, cpu);
+ fbatch = &per_cpu(cpu_fbatches.lru_deactivate_file, cpu);
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_deactivate_file_fn);
- fbatch = &per_cpu(lru_pvecs.lru_deactivate, cpu);
+ fbatch = &per_cpu(cpu_fbatches.lru_deactivate, cpu);
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_deactivate_fn);
- fbatch = &per_cpu(lru_pvecs.lru_lazyfree, cpu);
+ fbatch = &per_cpu(cpu_fbatches.lru_lazyfree, cpu);
if (folio_batch_count(fbatch))
folio_batch_move_lru(fbatch, lru_lazyfree_fn);
@@ -670,10 +670,10 @@ void deactivate_file_folio(struct folio
return;
folio_get(folio);
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.lru_deactivate_file);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.lru_deactivate_file);
folio_batch_add_and_move(fbatch, folio, lru_deactivate_file_fn);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
/*
@@ -693,10 +693,10 @@ void deactivate_page(struct page *page)
struct folio_batch *fbatch;
folio_get(folio);
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.lru_deactivate);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.lru_deactivate);
folio_batch_add_and_move(fbatch, folio, lru_deactivate_fn);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
}
@@ -717,18 +717,18 @@ void mark_page_lazyfree(struct page *pag
struct folio_batch *fbatch;
folio_get(folio);
- local_lock(&lru_pvecs.lock);
- fbatch = this_cpu_ptr(&lru_pvecs.lru_lazyfree);
+ local_lock(&cpu_fbatches.lock);
+ fbatch = this_cpu_ptr(&cpu_fbatches.lru_lazyfree);
folio_batch_add_and_move(fbatch, folio, lru_lazyfree_fn);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
}
}
void lru_add_drain(void)
{
- local_lock(&lru_pvecs.lock);
+ local_lock(&cpu_fbatches.lock);
lru_add_drain_cpu(smp_processor_id());
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
mlock_page_drain_local();
}
@@ -740,19 +740,19 @@ void lru_add_drain(void)
*/
static void lru_add_and_bh_lrus_drain(void)
{
- local_lock(&lru_pvecs.lock);
+ local_lock(&cpu_fbatches.lock);
lru_add_drain_cpu(smp_processor_id());
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
invalidate_bh_lrus_cpu();
mlock_page_drain_local();
}
void lru_add_drain_cpu_zone(struct zone *zone)
{
- local_lock(&lru_pvecs.lock);
+ local_lock(&cpu_fbatches.lock);
lru_add_drain_cpu(smp_processor_id());
drain_local_pages(zone);
- local_unlock(&lru_pvecs.lock);
+ local_unlock(&cpu_fbatches.lock);
mlock_page_drain_local();
}
@@ -797,8 +797,9 @@ static inline void __lru_add_drain_all(b
return;
/*
- * Guarantee pagevec counter stores visible by this CPU are visible to
- * other CPUs before loading the current drain generation.
+ * Guarantee folio_batch counter stores visible by this CPU
+ * are visible to other CPUs before loading the current drain
+ * generation.
*/
smp_mb();
@@ -824,8 +825,9 @@ static inline void __lru_add_drain_all(b
* (D) Increment global generation number
*
* Pairs with smp_load_acquire() at (B), outside of the critical
- * section. Use a full memory barrier to guarantee that the new global
- * drain generation number is stored before loading pagevec counters.
+ * section. Use a full memory barrier to guarantee that the
+ * new global drain generation number is stored before loading
+ * folio_batch counters.
*
* This pairing must be done here, before the for_each_online_cpu loop
* below which drains the page vectors.
@@ -847,12 +849,12 @@ static inline void __lru_add_drain_all(b
for_each_online_cpu(cpu) {
struct work_struct *work = &per_cpu(lru_add_drain_work, cpu);
- if (folio_batch_count(&per_cpu(lru_pvecs.lru_add, cpu)) ||
+ if (folio_batch_count(&per_cpu(cpu_fbatches.lru_add, cpu)) ||
data_race(folio_batch_count(&per_cpu(lru_rotate.fbatch, cpu))) ||
- folio_batch_count(&per_cpu(lru_pvecs.lru_deactivate_file, cpu)) ||
- folio_batch_count(&per_cpu(lru_pvecs.lru_deactivate, cpu)) ||
- folio_batch_count(&per_cpu(lru_pvecs.lru_lazyfree, cpu)) ||
- folio_batch_count(&per_cpu(lru_pvecs.activate, cpu)) ||
+ folio_batch_count(&per_cpu(cpu_fbatches.lru_deactivate_file, cpu)) ||
+ folio_batch_count(&per_cpu(cpu_fbatches.lru_deactivate, cpu)) ||
+ folio_batch_count(&per_cpu(cpu_fbatches.lru_lazyfree, cpu)) ||
+ folio_batch_count(&per_cpu(cpu_fbatches.activate, cpu)) ||
need_mlock_page_drain(cpu) ||
has_bh_in_lru(cpu, NULL)) {
INIT_WORK(work, lru_add_drain_per_cpu);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-add-vma-iterator.patch
mmap-use-the-vma-iterator-in-count_vma_pages_range.patch
proc-remove-vma-rbtree-use-from-nommu.patch
arm64-remove-mmap-linked-list-from-vdso.patch
parisc-remove-mmap-linked-list-from-cache-handling.patch
powerpc-remove-mmap-linked-list-walks.patch
s390-remove-vma-linked-list-walks.patch
x86-remove-vma-linked-list-walks.patch
xtensa-remove-vma-linked-list-walks.patch
cxl-remove-vma-linked-list-walk.patch
optee-remove-vma-linked-list-walk.patch
um-remove-vma-linked-list-walk.patch
coredump-remove-vma-linked-list-walk.patch
exec-use-vma-iterator-instead-of-linked-list.patch
fs-proc-task_mmu-stop-using-linked-list-and-highest_vm_end.patch
acct-use-vma-iterator-instead-of-linked-list.patch
perf-use-vma-iterator.patch
sched-use-maple-tree-iterator-to-walk-vmas.patch
fork-use-vma-iterator.patch
mm-khugepaged-stop-using-vma-linked-list.patch
mm-ksm-use-vma-iterators-instead-of-vma-linked-list.patch
mm-mlock-use-vma-iterator-and-maple-state-instead-of-vma-linked-list.patch
mm-pagewalk-use-vma_find-instead-of-vma-linked-list.patch
i915-use-the-vma-iterator.patch
nommu-remove-uses-of-vma-linked-list.patch
mm-vmscan-convert-reclaim_clean_pages_from_list-to-folios.patch
mm-vmscan-convert-isolate_lru_pages-to-use-a-folio.patch
mm-vmscan-convert-move_pages_to_lru-to-use-a-folio.patch
mm-vmscan-convert-shrink_active_list-to-use-a-folio.patch
mm-vmscan-convert-reclaim_pages-to-use-a-folio.patch
mm-add-folios_put.patch
mm-swap-add-folio_batch_move_lru.patch
mm-swap-make-__pagevec_lru_add-static.patch
mm-swap-convert-lru_add-to-a-folio_batch.patch
mm-swap-convert-lru_deactivate_file-to-a-folio_batch.patch
mm-swap-convert-lru_deactivate-to-a-folio_batch.patch
mm-swap-convert-lru_lazyfree-to-a-folio_batch.patch
mm-swap-convert-activate_page-to-a-folio_batch.patch
mm-swap-rename-lru_pvecs-to-cpu_fbatches.patch
mm-swap-pull-the-cpu-conditional-out-of-__lru_add_drain_all.patch
mm-swap-optimise-lru_add_drain_cpu.patch
mm-swap-convert-try_to_free_swap-to-use-a-folio.patch
mm-swap-convert-release_pages-to-use-a-folio-internally.patch
mm-swap-convert-put_pages_list-to-use-folios.patch
mm-swap-convert-__put_page-to-__folio_put.patch
mm-swap-convert-__put_single_page-to-__folio_put_small.patch
mm-swap-convert-__put_compound_page-to-__folio_put_large.patch
mm-swap-convert-__page_cache_release-to-use-a-folio.patch
mm-convert-destroy_compound_page-to-destroy_large_folio.patch
mm-convert-page_swap_flags-to-folio_swap_flags.patch
mm-swap-convert-delete_from_swap_cache-to-take-a-folio.patch
mm-swap-convert-__delete_from_swap_cache-to-a-folio.patch
