+ mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix
has been added to the -mm mm-unstable branch.  Its filename is
     mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix.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: Lorenzo Stoakes <lstoakes@gmail.com>
Subject: mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix
Date: Mon, 5 Jun 2023 21:44:20 +0100

We do NOT purge if this conditional evalutates true, so correct
VMAP_PURGE_THRESHOLD check.

Link: https://lkml.kernel.org/r/3e92ef61-b910-4576-88e7-cf43211fd4e7@lucifer.local
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/vmalloc.c~mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix
+++ a/mm/vmalloc.c
@@ -2102,7 +2102,7 @@ static bool purge_fragmented_block(struc
 		return false;
 
 	/* Don't overeagerly purge usable blocks unless requested */
-	if (!force_purge && vb->free < VMAP_PURGE_THRESHOLD)
+	if (!(force_purge || vb->free < VMAP_PURGE_THRESHOLD))
 		return false;
 
 	/* prevent further allocs after releasing lock */
_

Patches currently in -mm which might be from lstoakes@gmail.com are

lib-test_vmallocc-avoid-garbage-in-page-array.patch
mm-mmap-separate-writenotify-and-dirty-tracking-logic.patch
mm-gup-disallow-foll_longterm-gup-nonfast-writing-to-file-backed-mappings.patch
mm-gup-disallow-foll_longterm-gup-fast-writing-to-file-backed-mappings.patch
mm-gup-add-missing-gup_must_unshare-check-to-gup_huge_pgd.patch
mm-gup-remove-unused-vmas-parameter-from-get_user_pages.patch
mm-gup-remove-unused-vmas-parameter-from-pin_user_pages_remote.patch
mm-gup-remove-vmas-parameter-from-get_user_pages_remote.patch
io_uring-rsrc-delegate-vma-file-backed-check-to-gup.patch
mm-gup-remove-vmas-parameter-from-pin_user_pages.patch
mm-gup-remove-vmas-array-from-internal-gup-functions.patch
mm-mmap-refactor-mlock_future_check.patch
mm-vmalloc-dont-purge-usable-blocks-unnecessarily-fix.patch