From a1b8e6abf35b9903807eced67a4c26e440663620 Mon Sep 17 00:00:00 2001
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: Mon, 13 May 2019 17:23:20 -0700
Subject: [PATCH] mm: delete find_get_entries_tag
I removed the only user of this and hadn't noticed it was now unused.
Link: http://lkml.kernel.org/r/20190430152929.21813-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/pagemap.h | 3 --
mm/filemap.c | 61 -----------------------------------------
2 files changed, 64 deletions(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 112f15bb5907..9ec3544baee2 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -373,9 +373,6 @@ static inline unsigned find_get_pages_tag(struct address_space *mapping,
return find_get_pages_range_tag(mapping, index, (pgoff_t)-1, tag,
nr_pages, pages);
}
-unsigned find_get_entries_tag(struct address_space *mapping, pgoff_t start,
- xa_mark_t tag, unsigned int nr_entries,
- struct page **entries, pgoff_t *indices);
struct page *grab_cache_page_write_begin(struct address_space *mapping,
pgoff_t index, unsigned flags);
diff --git a/mm/filemap.c b/mm/filemap.c
index 3ad18fa56057..c5af80c43d36 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1941,67 +1941,6 @@ out:
}
EXPORT_SYMBOL(find_get_pages_range_tag);
-/**
- * find_get_entries_tag - find and return entries that match @tag
- * @mapping: the address_space to search
- * @start: the starting page cache index
- * @tag: the tag index
- * @nr_entries: the maximum number of entries
- * @entries: where the resulting entries are placed
- * @indices: the cache indices corresponding to the entries in @entries
- *
- * Like find_get_entries, except we only return entries which are tagged with
- * @tag.
- *
- * Return: the number of entries which were found.
- */
-unsigned find_get_entries_tag(struct address_space *mapping, pgoff_t start,
- xa_mark_t tag, unsigned int nr_entries,
- struct page **entries, pgoff_t *indices)
-{
- XA_STATE(xas, &mapping->i_pages, start);
- struct page *page;
- unsigned int ret = 0;
-
- if (!nr_entries)
- return 0;
-
- rcu_read_lock();
- xas_for_each_marked(&xas, page, ULONG_MAX, tag) {
- if (xas_retry(&xas, page))
- continue;
- /*
- * A shadow entry of a recently evicted page, a swap
- * entry from shmem/tmpfs or a DAX entry. Return it
- * without attempting to raise page count.
- */
- if (xa_is_value(page))
- goto export;
-
- if (!page_cache_get_speculative(page))
- goto retry;
-
- /* Has the page moved or been split? */
- if (unlikely(page != xas_reload(&xas)))
- goto put_page;
- page = find_subpage(page, xas.xa_index);
-
-export:
- indices[ret] = xas.xa_index;
- entries[ret] = page;
- if (++ret == nr_entries)
- break;
- continue;
-put_page:
- put_page(page);
-retry:
- xas_reset(&xas);
- }
- rcu_read_unlock();
- return ret;
-}
-EXPORT_SYMBOL(find_get_entries_tag);
-
/*
* CD/DVDs are error prone. When a medium error occurs, the driver may fail
* a _large_ part of the i/o request. Imagine the worst scenario: