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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, chuck.lever@oracle.com, hch@lst.de,
	jack@suse.cz, linux-mm@kvack.org, mhocko@suse.com,
	mm-commits@vger.kernel.org, neilb@suse.de,
	torvalds@linux-foundation.org, trond.myklebust@hammerspace.com
Subject: [patch 053/128] mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
Date: Tue, 02 Jun 2020 13:13:03 -0700	[thread overview]
Message-ID: <20200602201303.vi-mJh7FZ%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org>

From: NeilBrown <neilb@suse.de>
Subject: mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead

After an NFS page has been written it is considered "unstable" until a
COMMIT request succeeds.  If the COMMIT fails, the page will be
re-written.

These "unstable" pages are currently accounted as "reclaimable", either in
WB_RECLAIMABLE, or in NR_UNSTABLE_NFS which is included in a 'reclaimable'
count.  This might have made sense when sending the COMMIT required a
separate action by the VFS/MM (e.g.  releasepage() used to send a COMMIT).
However now that all writes generated by ->writepages() will
automatically be followed by a COMMIT (since commit 919e3bd9a875 ("NFS:
Ensure we commit after writeback is complete")) it makes more sense to
treat them as writeback pages.

So this patch removes NR_UNSTABLE_NFS and accounts unstable pages in
NR_WRITEBACK and WB_WRITEBACK.

A particular effect of this change is that when
wb_check_background_flush() calls wb_over_bg_threshold(), the latter will
report 'true' a lot less often as the 'unstable' pages are no longer
considered 'dirty' (as there is nothing that writeback can do about them
anyway).

Currently wb_check_background_flush() will trigger writeback to NFS even
when there are relatively few dirty pages (if there are lots of unstable
pages), this can result in small writes going to the server (10s of
Kilobytes rather than a Megabyte) which hurts throughput.  With this
patch, there are fewer writes which are each larger on average.

Where the NR_UNSTABLE_NFS count was included in statistics virtual-files,
the entry is retained, but the value is hard-coded as zero.  static trace
points and warning printks which mentioned this counter no longer report
it.

[akpm@linux-foundation.org: re-layout comment]
[akpm@linux-foundation.org: fix printk warning]
Link: http://lkml.kernel.org/r/87d06j7gqa.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: Michal Hocko <mhocko@suse.com>	[mm]
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/filesystems/proc.rst |    4 ++--
 drivers/base/node.c                |    2 +-
 fs/fs-writeback.c                  |    1 -
 fs/nfs/internal.h                  |   10 +++++++---
 fs/nfs/write.c                     |    4 ++--
 fs/proc/meminfo.c                  |    3 +--
 include/linux/mmzone.h             |    1 -
 include/trace/events/writeback.h   |    5 +----
 mm/memcontrol.c                    |    1 -
 mm/page-writeback.c                |   17 ++++-------------
 mm/page_alloc.c                    |    5 +----
 mm/vmstat.c                        |   11 +++++++++--
 12 files changed, 28 insertions(+), 36 deletions(-)

--- a/Documentation/filesystems/proc.rst~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/Documentation/filesystems/proc.rst
@@ -1043,8 +1043,8 @@ PageTables
               amount of memory dedicated to the lowest level of page
               tables.
 NFS_Unstable
-              NFS pages sent to the server, but not yet committed to stable
-	      storage
+              Always zero. Previous counted pages which had been written to
+              the server, but has not been committed to stable storage.
 Bounce
               Memory used for block device "bounce buffers"
 WritebackTmp
--- a/drivers/base/node.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/drivers/base/node.c
@@ -445,7 +445,7 @@ static ssize_t node_read_meminfo(struct
 		       nid, sum_zone_node_page_state(nid, NR_KERNEL_SCS_KB),
 #endif
 		       nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
-		       nid, K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
+		       nid, 0UL,
 		       nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
 		       nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
 		       nid, K(sreclaimable +
--- a/fs/fs-writeback.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/fs/fs-writeback.c
@@ -1070,7 +1070,6 @@ static void bdi_split_work_to_wbs(struct
 static unsigned long get_nr_dirty_pages(void)
 {
 	return global_node_page_state(NR_FILE_DIRTY) +
-		global_node_page_state(NR_UNSTABLE_NFS) +
 		get_nr_dirty_inodes();
 }
 
--- a/fs/nfs/internal.h~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/fs/nfs/internal.h
@@ -668,7 +668,8 @@ void nfs_super_set_maxbytes(struct super
 }
 
 /*
- * Record the page as unstable and mark its inode as dirty.
+ * Record the page as unstable (an extra writeback period) and mark its
+ * inode as dirty.
  */
 static inline
 void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo)
@@ -676,8 +677,11 @@ void nfs_mark_page_unstable(struct page
 	if (!cinfo->dreq) {
 		struct inode *inode = page_file_mapping(page)->host;
 
-		inc_node_page_state(page, NR_UNSTABLE_NFS);
-		inc_wb_stat(&inode_to_bdi(inode)->wb, WB_RECLAIMABLE);
+		/* This page is really still in write-back - just that the
+		 * writeback is happening on the server now.
+		 */
+		inc_node_page_state(page, NR_WRITEBACK);
+		inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
 		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
 	}
 }
--- a/fs/nfs/write.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/fs/nfs/write.c
@@ -946,9 +946,9 @@ nfs_mark_request_commit(struct nfs_page
 static void
 nfs_clear_page_commit(struct page *page)
 {
-	dec_node_page_state(page, NR_UNSTABLE_NFS);
+	dec_node_page_state(page, NR_WRITEBACK);
 	dec_wb_stat(&inode_to_bdi(page_file_mapping(page)->host)->wb,
-		    WB_RECLAIMABLE);
+		    WB_WRITEBACK);
 }
 
 /* Called holding the request lock on @req */
--- a/fs/proc/meminfo.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/fs/proc/meminfo.c
@@ -110,8 +110,7 @@ static int meminfo_proc_show(struct seq_
 	show_val_kb(m, "PageTables:     ",
 		    global_zone_page_state(NR_PAGETABLE));
 
-	show_val_kb(m, "NFS_Unstable:   ",
-		    global_node_page_state(NR_UNSTABLE_NFS));
+	show_val_kb(m, "NFS_Unstable:   ", 0);
 	show_val_kb(m, "Bounce:         ",
 		    global_zone_page_state(NR_BOUNCE));
 	show_val_kb(m, "WritebackTmp:   ",
--- a/include/linux/mmzone.h~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/include/linux/mmzone.h
@@ -196,7 +196,6 @@ enum node_stat_item {
 	NR_FILE_THPS,
 	NR_FILE_PMDMAPPED,
 	NR_ANON_THPS,
-	NR_UNSTABLE_NFS,	/* NFS unstable pages */
 	NR_VMSCAN_WRITE,
 	NR_VMSCAN_IMMEDIATE,	/* Prioritise for reclaim when writeback ends */
 	NR_DIRTIED,		/* page dirtyings since bootup */
--- a/include/trace/events/writeback.h~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/include/trace/events/writeback.h
@@ -541,7 +541,6 @@ TRACE_EVENT(global_dirty_state,
 	TP_STRUCT__entry(
 		__field(unsigned long,	nr_dirty)
 		__field(unsigned long,	nr_writeback)
-		__field(unsigned long,	nr_unstable)
 		__field(unsigned long,	background_thresh)
 		__field(unsigned long,	dirty_thresh)
 		__field(unsigned long,	dirty_limit)
@@ -552,7 +551,6 @@ TRACE_EVENT(global_dirty_state,
 	TP_fast_assign(
 		__entry->nr_dirty	= global_node_page_state(NR_FILE_DIRTY);
 		__entry->nr_writeback	= global_node_page_state(NR_WRITEBACK);
-		__entry->nr_unstable	= global_node_page_state(NR_UNSTABLE_NFS);
 		__entry->nr_dirtied	= global_node_page_state(NR_DIRTIED);
 		__entry->nr_written	= global_node_page_state(NR_WRITTEN);
 		__entry->background_thresh = background_thresh;
@@ -560,12 +558,11 @@ TRACE_EVENT(global_dirty_state,
 		__entry->dirty_limit	= global_wb_domain.dirty_limit;
 	),
 
-	TP_printk("dirty=%lu writeback=%lu unstable=%lu "
+	TP_printk("dirty=%lu writeback=%lu "
 		  "bg_thresh=%lu thresh=%lu limit=%lu "
 		  "dirtied=%lu written=%lu",
 		  __entry->nr_dirty,
 		  __entry->nr_writeback,
-		  __entry->nr_unstable,
 		  __entry->background_thresh,
 		  __entry->dirty_thresh,
 		  __entry->dirty_limit,
--- a/mm/memcontrol.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/mm/memcontrol.c
@@ -4330,7 +4330,6 @@ void mem_cgroup_wb_stats(struct bdi_writ
 
 	*pdirty = memcg_exact_page_state(memcg, NR_FILE_DIRTY);
 
-	/* this should eventually include NR_UNSTABLE_NFS */
 	*pwriteback = memcg_exact_page_state(memcg, NR_WRITEBACK);
 	*pfilepages = memcg_exact_page_state(memcg, NR_INACTIVE_FILE) +
 			memcg_exact_page_state(memcg, NR_ACTIVE_FILE);
--- a/mm/page_alloc.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/mm/page_alloc.c
@@ -5319,7 +5319,7 @@ void show_free_areas(unsigned int filter
 
 	printk("active_anon:%lu inactive_anon:%lu isolated_anon:%lu\n"
 		" active_file:%lu inactive_file:%lu isolated_file:%lu\n"
-		" unevictable:%lu dirty:%lu writeback:%lu unstable:%lu\n"
+		" unevictable:%lu dirty:%lu writeback:%lu\n"
 		" slab_reclaimable:%lu slab_unreclaimable:%lu\n"
 		" mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n"
 		" free:%lu free_pcp:%lu free_cma:%lu\n",
@@ -5332,7 +5332,6 @@ void show_free_areas(unsigned int filter
 		global_node_page_state(NR_UNEVICTABLE),
 		global_node_page_state(NR_FILE_DIRTY),
 		global_node_page_state(NR_WRITEBACK),
-		global_node_page_state(NR_UNSTABLE_NFS),
 		global_node_page_state(NR_SLAB_RECLAIMABLE),
 		global_node_page_state(NR_SLAB_UNRECLAIMABLE),
 		global_node_page_state(NR_FILE_MAPPED),
@@ -5365,7 +5364,6 @@ void show_free_areas(unsigned int filter
 			" anon_thp: %lukB"
 #endif
 			" writeback_tmp:%lukB"
-			" unstable:%lukB"
 			" all_unreclaimable? %s"
 			"\n",
 			pgdat->node_id,
@@ -5387,7 +5385,6 @@ void show_free_areas(unsigned int filter
 			K(node_page_state(pgdat, NR_ANON_THPS) * HPAGE_PMD_NR),
 #endif
 			K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
-			K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
 			pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES ?
 				"yes" : "no");
 	}
--- a/mm/page-writeback.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/mm/page-writeback.c
@@ -504,7 +504,6 @@ bool node_dirty_ok(struct pglist_data *p
 	unsigned long nr_pages = 0;
 
 	nr_pages += node_page_state(pgdat, NR_FILE_DIRTY);
-	nr_pages += node_page_state(pgdat, NR_UNSTABLE_NFS);
 	nr_pages += node_page_state(pgdat, NR_WRITEBACK);
 
 	return nr_pages <= limit;
@@ -758,7 +757,7 @@ static void mdtc_calc_avail(struct dirty
  * bounded by the bdi->min_ratio and/or bdi->max_ratio parameters, if set.
  *
  * Return: @wb's dirty limit in pages. The term "dirty" in the context of
- * dirty balancing includes all PG_dirty, PG_writeback and NFS unstable pages.
+ * dirty balancing includes all PG_dirty and PG_writeback pages.
  */
 static unsigned long __wb_calc_thresh(struct dirty_throttle_control *dtc)
 {
@@ -1566,7 +1565,7 @@ static void balance_dirty_pages(struct b
 	struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ?
 						     &mdtc_stor : NULL;
 	struct dirty_throttle_control *sdtc;
-	unsigned long nr_reclaimable;	/* = file_dirty + unstable_nfs */
+	unsigned long nr_reclaimable;	/* = file_dirty */
 	long period;
 	long pause;
 	long max_pause;
@@ -1586,14 +1585,7 @@ static void balance_dirty_pages(struct b
 		unsigned long m_thresh = 0;
 		unsigned long m_bg_thresh = 0;
 
-		/*
-		 * Unstable writes are a feature of certain networked
-		 * filesystems (i.e. NFS) in which data may have been
-		 * written to the server's write cache, but has not yet
-		 * been flushed to permanent storage.
-		 */
-		nr_reclaimable = global_node_page_state(NR_FILE_DIRTY) +
-					global_node_page_state(NR_UNSTABLE_NFS);
+		nr_reclaimable = global_node_page_state(NR_FILE_DIRTY);
 		gdtc->avail = global_dirtyable_memory();
 		gdtc->dirty = nr_reclaimable + global_node_page_state(NR_WRITEBACK);
 
@@ -1963,8 +1955,7 @@ bool wb_over_bg_thresh(struct bdi_writeb
 	 * as we're trying to decide whether to put more under writeback.
 	 */
 	gdtc->avail = global_dirtyable_memory();
-	gdtc->dirty = global_node_page_state(NR_FILE_DIRTY) +
-		      global_node_page_state(NR_UNSTABLE_NFS);
+	gdtc->dirty = global_node_page_state(NR_FILE_DIRTY);
 	domain_dirty_limits(gdtc);
 
 	if (gdtc->dirty > gdtc->bg_thresh)
--- a/mm/vmstat.c~mm-discard-nr_unstable_nfs-use-nr_writeback-instead
+++ a/mm/vmstat.c
@@ -1108,7 +1108,7 @@ int fragmentation_index(struct zone *zon
 					TEXT_FOR_HIGHMEM(xx) xx "_movable",
 
 const char * const vmstat_text[] = {
-	/* enum zone_stat_item countes */
+	/* enum zone_stat_item counters */
 	"nr_free_pages",
 	"nr_zone_inactive_anon",
 	"nr_zone_active_anon",
@@ -1165,7 +1165,6 @@ const char * const vmstat_text[] = {
 	"nr_file_hugepages",
 	"nr_file_pmdmapped",
 	"nr_anon_transparent_hugepages",
-	"nr_unstable",
 	"nr_vmscan_write",
 	"nr_vmscan_immediate_reclaim",
 	"nr_dirtied",
@@ -1726,6 +1725,14 @@ static int vmstat_show(struct seq_file *
 	seq_puts(m, vmstat_text[off]);
 	seq_put_decimal_ull(m, " ", *l);
 	seq_putc(m, '\n');
+
+	if (off == NR_VMSTAT_ITEMS - 1) {
+		/*
+		 * We've come to the end - add any deprecated counters to avoid
+		 * breaking userspace which might depend on them being present.
+		 */
+		seq_puts(m, "nr_unstable 0\n");
+	}
 	return 0;
 }
 
_


  parent reply	other threads:[~2020-06-02 20:13 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-02 20:09 incoming Andrew Morton
2020-06-02 20:09 ` [patch 001/128] squashfs: migrate from ll_rw_block usage to BIO Andrew Morton
2020-06-02 20:09 ` [patch 002/128] ocfs2: add missing annotation for dlm_empty_lockres() Andrew Morton
2020-06-02 20:10 ` [patch 003/128] ocfs2: mount shared volume without ha stack Andrew Morton
2020-06-02 20:10 ` [patch 004/128] arch/parisc/include/asm/pgtable.h: remove unused `old_pte' Andrew Morton
2020-06-02 20:10 ` [patch 005/128] vfs: track per-sb writeback errors and report them to syncfs Andrew Morton
2020-06-02 20:10 ` [patch 006/128] fs/buffer.c: record blockdev write errors in super_block that it backs Andrew Morton
2020-06-02 20:10 ` [patch 007/128] usercopy: mark dma-kmalloc caches as usercopy caches Andrew Morton
2020-06-15 11:04   ` Christian Borntraeger
2020-06-15 12:53     ` Vlastimil Babka
2020-06-02 20:10 ` [patch 008/128] mm/slub.c: fix corrupted freechain in deactivate_slab() Andrew Morton
2020-06-02 20:10 ` [patch 009/128] slub: Remove userspace notifier for cache add/remove Andrew Morton
2020-06-02 20:10 ` [patch 010/128] slub: remove kmalloc under list_lock from list_slab_objects() V2 Andrew Morton
2020-06-02 20:10 ` [patch 011/128] mm/slub: fix stack overruns with SLUB_STATS Andrew Morton
2020-06-02 20:10 ` [patch 012/128] Documentation/vm/slub.rst: s/Toggle/Enable/ Andrew Morton
2020-06-02 20:10 ` [patch 013/128] mm, dump_page(): do not crash with invalid mapping pointer Andrew Morton
2020-06-02 20:10 ` [patch 014/128] mm: move readahead prototypes from mm.h Andrew Morton
2020-06-02 20:10 ` [patch 015/128] mm: return void from various readahead functions Andrew Morton
2020-06-02 20:10 ` [patch 016/128] mm: ignore return value of ->readpages Andrew Morton
2020-06-02 20:10 ` [patch 017/128] mm: move readahead nr_pages check into read_pages Andrew Morton
2020-06-02 20:10 ` [patch 018/128] mm: add new readahead_control API Andrew Morton
2020-06-02 20:11 ` [patch 019/128] mm: use readahead_control to pass arguments Andrew Morton
2020-06-02 20:11 ` [patch 020/128] mm: rename various 'offset' parameters to 'index' Andrew Morton
2020-06-02 20:11 ` [patch 021/128] mm: rename readahead loop variable to 'i' Andrew Morton
2020-06-02 20:11 ` [patch 022/128] mm: remove 'page_offset' from readahead loop Andrew Morton
2020-06-02 20:11 ` [patch 023/128] mm: put readahead pages in cache earlier Andrew Morton
2020-06-02 20:11 ` [patch 024/128] mm: add readahead address space operation Andrew Morton
2020-06-02 20:11 ` [patch 025/128] mm: move end_index check out of readahead loop Andrew Morton
2020-06-02 20:11 ` [patch 026/128] mm: add page_cache_readahead_unbounded Andrew Morton
2020-06-02 20:11 ` [patch 027/128] mm: document why we don't set PageReadahead Andrew Morton
2020-06-02 20:11 ` [patch 028/128] mm: use memalloc_nofs_save in readahead path Andrew Morton
2020-06-02 20:11 ` [patch 029/128] fs: convert mpage_readpages to mpage_readahead Andrew Morton
2020-06-02 20:11 ` [patch 030/128] btrfs: convert from readpages to readahead Andrew Morton
2020-06-02 20:11 ` [patch 031/128] erofs: convert uncompressed files " Andrew Morton
2020-06-02 20:11 ` [patch 032/128] erofs: convert compressed " Andrew Morton
2020-06-02 20:11 ` [patch 033/128] ext4: convert " Andrew Morton
2020-06-02 20:11 ` [patch 034/128] ext4: pass the inode to ext4_mpage_readpages Andrew Morton
2020-06-02 20:12 ` [patch 035/128] f2fs: convert from readpages to readahead Andrew Morton
2020-06-02 20:12 ` [patch 036/128] f2fs: pass the inode to f2fs_mpage_readpages Andrew Morton
2020-06-02 20:12 ` [patch 037/128] fuse: convert from readpages to readahead Andrew Morton
2020-06-02 20:12 ` [patch 038/128] iomap: " Andrew Morton
2020-06-02 20:12 ` [patch 039/128] include/linux/pagemap.h: introduce attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 040/128] md: remove __clear_page_buffers and use attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 041/128] btrfs: " Andrew Morton
2020-06-02 20:12 ` [patch 042/128] fs/buffer.c: " Andrew Morton
2020-06-02 20:12 ` [patch 043/128] f2fs: " Andrew Morton
2020-06-02 20:12 ` [patch 044/128] iomap: " Andrew Morton
2020-06-02 20:12 ` [patch 045/128] ntfs: replace attach_page_buffers with attach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 046/128] orangefs: use attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 047/128] buffer_head.h: remove attach_page_buffers Andrew Morton
2020-06-02 20:12 ` [patch 048/128] mm/migrate.c: call detach_page_private to cleanup code Andrew Morton
2020-06-02 20:12 ` [patch 049/128] mm_types.h: change set_page_private to inline function Andrew Morton
2020-06-02 20:12 ` [patch 050/128] mm/filemap.c: remove misleading comment Andrew Morton
2020-06-02 20:12 ` [patch 051/128] mm/page-writeback.c: remove unused variable Andrew Morton
2020-06-02 20:13 ` [patch 052/128] mm/writeback: replace PF_LESS_THROTTLE with PF_LOCAL_THROTTLE Andrew Morton
2020-06-02 20:13 ` Andrew Morton [this message]
2020-06-02 20:13 ` [patch 054/128] mm/gup.c: update the documentation Andrew Morton
2020-06-02 20:13 ` [patch 055/128] mm/gup: introduce pin_user_pages_unlocked Andrew Morton
2020-06-02 20:13 ` [patch 056/128] ivtv: convert get_user_pages() --> pin_user_pages() Andrew Morton
2020-06-02 20:13 ` [patch 057/128] mm/gup.c: further document vma_permits_fault() Andrew Morton
2020-06-02 20:13 ` [patch 058/128] mm/swapfile: use list_{prev,next}_entry() instead of open-coding Andrew Morton
2020-06-02 20:13 ` [patch 059/128] mm/swap_state: fix a data race in swapin_nr_pages Andrew Morton
2020-06-02 20:13 ` [patch 060/128] mm: swap: properly update readahead statistics in unuse_pte_range() Andrew Morton
2020-06-02 20:13 ` [patch 061/128] mm/swapfile.c: offset is only used when there is more slots Andrew Morton
2020-06-02 20:13 ` [patch 062/128] mm/swapfile.c: explicitly show ssd/non-ssd is handled mutually exclusive Andrew Morton
2020-06-02 20:13 ` [patch 063/128] mm/swapfile.c: remove the unnecessary goto for SSD case Andrew Morton
2020-06-02 20:13 ` [patch 064/128] mm/swapfile.c: simplify the calculation of n_goal Andrew Morton
2020-06-02 20:13 ` [patch 065/128] mm/swapfile.c: remove the extra check in scan_swap_map_slots() Andrew Morton
2020-06-02 20:13 ` [patch 066/128] mm/swapfile.c: found_free could be represented by (tmp < max) Andrew Morton
2020-06-02 20:13 ` [patch 067/128] mm/swapfile.c: tmp is always smaller than max Andrew Morton
2020-06-02 20:13 ` [patch 068/128] mm/swapfile.c: omit a duplicate code by compare tmp and max first Andrew Morton
2020-06-02 20:13 ` [patch 069/128] swap: try to scan more free slots even when fragmented Andrew Morton
2020-06-02 20:14 ` [patch 070/128] mm/swapfile.c: classify SWAP_MAP_XXX to make it more readable Andrew Morton
2020-06-02 20:14 ` [patch 071/128] mm/swapfile.c: __swap_entry_free() always free 1 entry Andrew Morton
2020-06-02 20:14 ` [patch 072/128] mm/swapfile.c: use prandom_u32_max() Andrew Morton
2020-06-02 20:14 ` [patch 073/128] swap: reduce lock contention on swap cache from swap slots allocation Andrew Morton
2020-06-02 20:14 ` [patch 074/128] mm: swapfile: fix /proc/swaps heading and Size/Used/Priority alignment Andrew Morton
2020-06-02 20:14 ` [patch 075/128] include/linux/swap.h: delete meaningless __add_to_swap_cache() declaration Andrew Morton
2020-06-02 20:14 ` [patch 076/128] mm, memcg: add workingset_restore in memory.stat Andrew Morton
2020-06-02 20:14 ` [patch 077/128] mm: memcontrol: simplify value comparison between count and limit Andrew Morton
2020-06-02 20:14 ` [patch 078/128] memcg: expose root cgroup's memory.stat Andrew Morton
2020-06-02 20:14 ` [patch 079/128] mm/memcg: prepare for swap over-high accounting and penalty calculation Andrew Morton
2020-06-02 20:14 ` [patch 080/128] mm/memcg: move penalty delay clamping out of calculate_high_delay() Andrew Morton
2020-06-02 20:14 ` [patch 081/128] mm/memcg: move cgroup high memory limit setting into struct page_counter Andrew Morton
2020-06-02 20:14 ` [patch 082/128] mm/memcg: automatically penalize tasks with high swap use Andrew Morton
2020-06-02 20:14 ` [patch 083/128] memcg: fix memcg_kmem_bypass() for remote memcg charging Andrew Morton
2020-06-02 20:14 ` [patch 084/128] x86: mm: ptdump: calculate effective permissions correctly Andrew Morton
2020-06-02 20:14 ` [patch 085/128] mm: ptdump: expand type of 'val' in note_page() Andrew Morton
2020-06-02 20:14 ` [patch 086/128] /proc/PID/smaps: Add PMD migration entry parsing Andrew Morton
2020-06-02 20:15 ` [patch 087/128] mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Andrew Morton
2020-06-02 20:15 ` [patch 088/128] mm, memory_failure: don't send BUS_MCEERR_AO for action required error Andrew Morton
2020-06-02 20:15 ` [patch 089/128] x86/hyperv: use vmalloc_exec for the hypercall page Andrew Morton
2020-06-02 20:15 ` [patch 090/128] x86: fix vmap arguments in map_irq_stack Andrew Morton
2020-06-02 20:15 ` [patch 091/128] staging: android: ion: use vmap instead of vm_map_ram Andrew Morton
2020-06-02 20:15 ` [patch 092/128] staging: media: ipu3: use vmap instead of reimplementing it Andrew Morton
2020-06-02 20:15 ` [patch 093/128] dma-mapping: use vmap insted " Andrew Morton
2020-06-02 20:15 ` [patch 094/128] powerpc: add an ioremap_phb helper Andrew Morton
2020-06-02 20:15 ` [patch 095/128] powerpc: remove __ioremap_at and __iounmap_at Andrew Morton
2020-06-02 20:15 ` [patch 096/128] mm: remove __get_vm_area Andrew Morton
2020-06-02 20:15 ` [patch 097/128] mm: unexport unmap_kernel_range_noflush Andrew Morton
2020-06-02 20:15 ` [patch 098/128] mm: rename CONFIG_PGTABLE_MAPPING to CONFIG_ZSMALLOC_PGTABLE_MAPPING Andrew Morton
2020-06-02 20:15 ` [patch 099/128] mm: only allow page table mappings for built-in zsmalloc Andrew Morton
2020-06-02 20:15 ` [patch 100/128] mm: pass addr as unsigned long to vb_free Andrew Morton
2020-06-02 20:16 ` [patch 101/128] mm: remove vmap_page_range_noflush and vunmap_page_range Andrew Morton
2020-06-02 20:16 ` [patch 102/128] mm: rename vmap_page_range to map_kernel_range Andrew Morton
2020-06-02 20:16 ` [patch 103/128] mm: don't return the number of pages from map_kernel_range{,_noflush} Andrew Morton
2020-06-02 20:16 ` [patch 104/128] mm: remove map_vm_range Andrew Morton
2020-06-02 20:16 ` [patch 105/128] mm: remove unmap_vmap_area Andrew Morton
2020-06-02 20:16 ` [patch 106/128] mm: remove the prot argument from vm_map_ram Andrew Morton
2020-06-02 20:16 ` [patch 107/128] mm: enforce that vmap can't map pages executable Andrew Morton
2020-06-02 20:16 ` [patch 108/128] gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc Andrew Morton
2020-06-02 20:16 ` [patch 109/128] mm: remove the pgprot argument to __vmalloc Andrew Morton
2020-06-02 20:16 ` [patch 110/128] mm: remove the prot argument to __vmalloc_node Andrew Morton
2020-06-02 20:16 ` [patch 111/128] mm: remove both instances of __vmalloc_node_flags Andrew Morton
2020-06-02 20:16 ` [patch 112/128] mm: remove __vmalloc_node_flags_caller Andrew Morton
2020-06-02 20:16 ` [patch 113/128] mm: switch the test_vmalloc module to use __vmalloc_node Andrew Morton
2020-06-02 20:16 ` [patch 114/128] mm: remove vmalloc_user_node_flags Andrew Morton
2020-06-02 20:17 ` [patch 115/128] arm64: use __vmalloc_node in arch_alloc_vmap_stack Andrew Morton
2020-06-02 20:17 ` [patch 116/128] powerpc: use __vmalloc_node in alloc_vm_stack Andrew Morton
2020-06-02 20:17 ` [patch 117/128] s390: use __vmalloc_node in stack_alloc Andrew Morton
2020-06-02 20:17 ` [patch 118/128] mm: add functions to track page directory modifications Andrew Morton
2020-06-02 20:17 ` [patch 119/128] mm/vmalloc: track which page-table levels were modified Andrew Morton
2020-06-02 20:17 ` [patch 120/128] mm/ioremap: " Andrew Morton
2020-06-02 20:17 ` [patch 121/128] x86/mm/64: implement arch_sync_kernel_mappings() Andrew Morton
2020-06-02 20:17 ` [patch 122/128] x86/mm/32: " Andrew Morton
2020-06-02 20:17 ` [patch 123/128] mm: remove vmalloc_sync_(un)mappings() Andrew Morton
2020-06-02 20:17 ` [patch 124/128] x86/mm: remove vmalloc faulting Andrew Morton
2020-06-02 20:17 ` [patch 125/128] kasan: fix clang compilation warning due to stack protector Andrew Morton
2020-06-02 20:17 ` [patch 126/128] ubsan: entirely disable alignment checks under UBSAN_TRAP Andrew Morton
2020-06-02 20:17 ` [patch 127/128] mm/mm_init.c: report kasan-tag information stored in page->flags Andrew Morton
2020-06-02 20:17 ` [patch 128/128] kasan: move kasan_report() into report.c Andrew Morton
  -- strict thread matches above, loose matches on Subject: below --
2020-06-02  4:44 incoming Andrew Morton
2020-06-02  4:48 ` [patch 053/128] mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead Andrew Morton

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