The quilt patch titled
Subject: readahead: drop pointless index from force_page_cache_ra()
has been removed from the -mm tree. Its filename was
readahead-drop-pointless-index-from-force_page_cache_ra.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Jan Kara <jack@xxxxxxx>
Subject: readahead: drop pointless index from force_page_cache_ra()
Date: Tue, 25 Jun 2024 12:18:54 +0200
Current index to readahead is tracked in readahead_control and properly
updated by page_cache_ra_unbounded() (read_pages() in fact). So there's
no need to track the index separately in force_page_cache_ra().
Link: https://lkml.kernel.org/r/20240625101909.12234-4-jack@xxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Tested-by: Zhang Peng <zhangpengpeng0808@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/readahead.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/mm/readahead.c~readahead-drop-pointless-index-from-force_page_cache_ra
+++ a/mm/readahead.c
@@ -313,7 +313,7 @@ void force_page_cache_ra(struct readahea
struct address_space *mapping = ractl->mapping;
struct file_ra_state *ra = ractl->ra;
struct backing_dev_info *bdi = inode_to_bdi(mapping->host);
- unsigned long max_pages, index;
+ unsigned long max_pages;
if (unlikely(!mapping->a_ops->read_folio && !mapping->a_ops->readahead))
return;
@@ -322,7 +322,6 @@ void force_page_cache_ra(struct readahea
* If the request exceeds the readahead window, allow the read to
* be up to the optimal hardware IO size
*/
- index = readahead_index(ractl);
max_pages = max_t(unsigned long, bdi->io_pages, ra->ra_pages);
nr_to_read = min_t(unsigned long, nr_to_read, max_pages);
while (nr_to_read) {
@@ -330,10 +329,8 @@ void force_page_cache_ra(struct readahea
if (this_chunk > nr_to_read)
this_chunk = nr_to_read;
- ractl->_index = index;
do_page_cache_ra(ractl, this_chunk, 0);
- index += this_chunk;
nr_to_read -= this_chunk;
}
}
_
Patches currently in -mm which might be from jack@xxxxxxx are
