The patch titled
Subject: mm: add an 'end' parameter to find_get_entries
has been removed from the -mm tree. Its filename was
mm-add-an-end-parameter-to-find_get_entries.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: add an 'end' parameter to find_get_entries
This simplifies the callers and leads to a more efficient implementation
since the XArray has this functionality already.
Link: https://lkml.kernel.org/r/20201112212641.27837-11-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: William Kucharski <william.kucharski@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Chinner <dchinner@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/pagemap.h | 4 ++--
mm/filemap.c | 9 +++++----
mm/shmem.c | 10 ++--------
mm/swap.c | 2 +-
4 files changed, 10 insertions(+), 15 deletions(-)
--- a/include/linux/pagemap.h~mm-add-an-end-parameter-to-find_get_entries
+++ a/include/linux/pagemap.h
@@ -451,8 +451,8 @@ static inline struct page *find_subpage(
}
unsigned find_get_entries(struct address_space *mapping, pgoff_t start,
- unsigned int nr_entries, struct page **entries,
- pgoff_t *indices);
+ pgoff_t end, unsigned int nr_entries, struct page **entries,
+ pgoff_t *indices);
unsigned find_get_pages_range(struct address_space *mapping, pgoff_t *start,
pgoff_t end, unsigned int nr_pages,
struct page **pages);
--- a/mm/filemap.c~mm-add-an-end-parameter-to-find_get_entries
+++ a/mm/filemap.c
@@ -1865,6 +1865,7 @@ reset:
* find_get_entries - gang pagecache lookup
* @mapping: The address_space to search
* @start: The starting page cache index
+ * @end: The final page index (inclusive).
* @nr_entries: The maximum number of entries
* @entries: Where the resulting entries are placed
* @indices: The cache indices corresponding to the entries in @entries
@@ -1888,9 +1889,9 @@ reset:
*
* Return: the number of pages and shadow entries which were found.
*/
-unsigned find_get_entries(struct address_space *mapping,
- pgoff_t start, unsigned int nr_entries,
- struct page **entries, pgoff_t *indices)
+unsigned find_get_entries(struct address_space *mapping, pgoff_t start,
+ pgoff_t end, unsigned int nr_entries, struct page **entries,
+ pgoff_t *indices)
{
XA_STATE(xas, &mapping->i_pages, start);
struct page *page;
@@ -1900,7 +1901,7 @@ unsigned find_get_entries(struct address
return 0;
rcu_read_lock();
- while ((page = find_get_entry(&xas, ULONG_MAX, XA_PRESENT))) {
+ while ((page = find_get_entry(&xas, end, XA_PRESENT))) {
/*
* Terminate early on finding a THP, to allow the caller to
* handle it all at once; but continue if this is hugetlbfs.
--- a/mm/shmem.c~mm-add-an-end-parameter-to-find_get_entries
+++ a/mm/shmem.c
@@ -913,8 +913,6 @@ static void shmem_undo_range(struct inod
struct page *page = pvec.pages[i];
index = indices[i];
- if (index >= end)
- break;
if (xa_is_value(page)) {
if (unfalloc)
@@ -967,9 +965,8 @@ static void shmem_undo_range(struct inod
while (index < end) {
cond_resched();
- pvec.nr = find_get_entries(mapping, index,
- min(end - index, (pgoff_t)PAGEVEC_SIZE),
- pvec.pages, indices);
+ pvec.nr = find_get_entries(mapping, index, end - 1,
+ PAGEVEC_SIZE, pvec.pages, indices);
if (!pvec.nr) {
/* If all gone or hole-punch or unfalloc, we're done */
if (index == start || end != -1)
@@ -982,9 +979,6 @@ static void shmem_undo_range(struct inod
struct page *page = pvec.pages[i];
index = indices[i];
- if (index >= end)
- break;
-
if (xa_is_value(page)) {
if (unfalloc)
continue;
--- a/mm/swap.c~mm-add-an-end-parameter-to-find_get_entries
+++ a/mm/swap.c
@@ -1046,7 +1046,7 @@ unsigned pagevec_lookup_entries(struct p
pgoff_t start, unsigned nr_entries,
pgoff_t *indices)
{
- pvec->nr = find_get_entries(mapping, start, nr_entries,
+ pvec->nr = find_get_entries(mapping, start, ULONG_MAX, nr_entries,
pvec->pages, indices);
return pagevec_count(pvec);
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
