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mm: move clearing of page->mapping to page_cache_tree_delete()

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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/[email protected]
Signed-off-by: Jan Kara <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Reviewed-by: Andi Kleen <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jan Kara 2017-11-15 17:37:26 -08:00 • committed by Linus Torvalds
commit 2300638b12
1 changed files with 3 additions and 3 deletions
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6
mm/filemap.c
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@ -165,6 +165,9 @@ static void page_cache_tree_delete(struct address_space *mapping,
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 page *page, void *shadow)
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,