The patch titled
Subject: mm: move clearing of page->mapping to page_cache_tree_delete()
has been added to the -mm tree. Its filename is
mm-move-clearing-of-page-mapping-to-page_cache_tree_delete.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-move-clearing-of-page-mapping-to-page_cache_tree_delete.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-move-clearing-of-page-mapping-to-page_cache_tree_delete.patch
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------------------------------------------------------
From: Jan Kara <jack@xxxxxxx>
Subject: mm: move clearing of page->mapping to page_cache_tree_delete()
Clearing of page->mapping makes sense in page_cache_tree_delete() as well
and it will help us with batching things this way.
Link: http://lkml.kernel.org/r/20171010151937.26984-6-jack@xxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/filemap.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/filemap.c~mm-move-clearing-of-page-mapping-to-page_cache_tree_delete mm/filemap.c
--- a/mm/filemap.c~mm-move-clearing-of-page-mapping-to-page_cache_tree_delete
+++ a/mm/filemap.c
@@ -165,6 +165,9 @@ static void page_cache_tree_delete(struc
workingset_update_node, mapping);
}
+ page->mapping = NULL;
+ /* Leave page->index set: truncation lookup relies upon it */
+
if (shadow) {
mapping->nrexceptional += nr;
/*
@@ -250,9 +253,6 @@ void __delete_from_page_cache(struct pag
inode_to_wb(mapping->host));
}
page_cache_tree_delete(mapping, page, shadow);
-
- page->mapping = NULL;
- /* Leave page->index set: truncation lookup relies upon it */
}
static void page_cache_free_page(struct address_space *mapping,
_
Patches currently in -mm which might be from jack@xxxxxxx are
mm-readahead-increase-maximum-readahead-window.patch
mm-implement-find_get_pages_range_tag.patch
btrfs-use-pagevec_lookup_range_tag.patch
ceph-use-pagevec_lookup_range_tag.patch
ext4-use-pagevec_lookup_range_tag.patch
f2fs-use-pagevec_lookup_range_tag.patch
f2fs-simplify-page-iteration-loops.patch
f2fs-use-find_get_pages_tag-for-looking-up-single-page.patch
gfs2-use-pagevec_lookup_range_tag.patch
nilfs2-use-pagevec_lookup_range_tag.patch
mm-use-pagevec_lookup_range_tag-in-__filemap_fdatawait_range.patch
mm-use-pagevec_lookup_range_tag-in-write_cache_pages.patch
mm-add-variant-of-pagevec_lookup_range_tag-taking-number-of-pages.patch
ceph-use-pagevec_lookup_range_nr_tag.patch
mm-remove-nr_pages-argument-from-pagevec_lookup_range_tag.patch
afs-use-find_get_pages_range_tag.patch
cifs-use-find_get_pages_range_tag.patch
mm-speedup-cancel_dirty_page-for-clean-pages.patch
mm-refactor-truncate_complete_page.patch
mm-factor-out-page-cache-page-freeing-into-a-separate-function.patch
mm-move-accounting-updates-before-page_cache_tree_delete.patch
mm-move-clearing-of-page-mapping-to-page_cache_tree_delete.patch
mm-factor-out-checks-and-accounting-from-__delete_from_page_cache.patch
mm-batch-radix-tree-operations-when-truncating-pages.patch
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