The patch titled
Subject: readahead: drop dead code in page_cache_ra_order()
has been added to the -mm mm-unstable branch. Its filename is
readahead-drop-dead-code-in-page_cache_ra_order.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/readahead-drop-dead-code-in-page_cache_ra_order.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Jan Kara <jack@xxxxxxx>
Subject: readahead: drop dead code in page_cache_ra_order()
Date: Tue, 25 Jun 2024 12:18:56 +0200
page_cache_ra_order() scales folio order down so that is fully fits within
readahead window. Thus the code handling the case where we walked past
the readahead window is a dead code. Remove it.
Link: https://lkml.kernel.org/r/20240625101909.12234-6-jack@xxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/readahead.c | 5 -----
1 file changed, 5 deletions(-)
--- a/mm/readahead.c~readahead-drop-dead-code-in-page_cache_ra_order
+++ a/mm/readahead.c
@@ -525,11 +525,6 @@ void page_cache_ra_order(struct readahea
index += 1UL << order;
}
- if (index > limit) {
- ra->size += index - limit - 1;
- ra->async_size += index - limit - 1;
- }
-
read_pages(ractl);
filemap_invalidate_unlock_shared(mapping);
memalloc_nofs_restore(nofs);
_
Patches currently in -mm which might be from jack@xxxxxxx are
revert-mm-writeback-fix-possible-divide-by-zero-in-wb_dirty_limits-again.patch
mm-avoid-overflows-in-dirty-throttling-logic.patch
readahead-make-sure-sync-readahead-reads-needed-page.patch
filemap-fix-page_cache_next_miss-when-no-hole-found.patch
readahead-properly-shorten-readahead-when-falling-back-to-do_page_cache_ra.patch
readahead-drop-pointless-index-from-force_page_cache_ra.patch
readahead-drop-index-argument-of-page_cache_async_readahead.patch
readahead-drop-dead-code-in-page_cache_ra_order.patch
readahead-drop-dead-code-in-ondemand_readahead.patch
readahead-disentangle-async-and-sync-readahead.patch
readahead-fold-try_context_readahead-into-its-single-caller.patch
readahead-simplify-gotos-in-page_cache_sync_ra.patch
