[v6,35/99] mm: Convert __do_page_cache_readahead to XArray
From: Matthew Wilcox <willy@infradead.org>
Date: 2018-01-17 20:20:59
Also in:
cgroups, intel-gfx, linux-f2fs-devel, linux-fsdevel, linux-iommu, linux-mm, linux-remoteproc, linux-s390, linux-sh, linux-xfs, lkml
Subsystem:
memory management, page cache, the rest · Maintainers:
Andrew Morton, Matthew Wilcox, Jan Kara, Linus Torvalds
From: Matthew Wilcox <redacted> This one is trivial. Signed-off-by: Matthew Wilcox <redacted> --- mm/readahead.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/readahead.c b/mm/readahead.c
index f64b31b3a84a..66bcaffd47f0 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c@@ -174,9 +174,7 @@ int __do_page_cache_readahead(struct address_space *mapping, struct file *filp, if (page_offset > end_index) break; - rcu_read_lock(); - page = radix_tree_lookup(&mapping->pages, page_offset); - rcu_read_unlock(); + page = xa_load(&mapping->pages, page_offset); if (page && !xa_is_value(page)) continue;