The patch titled
Subject: Squashfs: Dont allocate fragment caches more than fragments
has been added to the -mm mm-nonmm-unstable branch. Its filename is
squashfs-dont-allocate-fragment-caches-more-than-fragments.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/squashfs-dont-allocate-fragment-caches-more-than-fragments.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: pangliyuan <pangliyuan1@xxxxxxxxxx>
Subject: Squashfs: Dont allocate fragment caches more than fragments
Date: Tue, 10 Dec 2024 17:08:42 +0800
Sometimes the actual number of fragments in image is between
0 and SQUASHFS_CACHED_FRAGMENTS, which cause additional
fragment caches to be allocated.
Sets the number of fragment caches to the minimum of fragments
and SQUASHFS_CACHED_FRAGMENTS.
Link: https://lkml.kernel.org/r/20241210090842.160853-1-pangliyuan1@xxxxxxxxxx
Signed-off-by: pangliyuan <pangliyuan1@xxxxxxxxxx>
Reviewed-by: Phillip Lougher <phillip@xxxxxxxxxxxxxxx>
Cc: <wangfangpeng1@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/squashfs/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/squashfs/super.c~squashfs-dont-allocate-fragment-caches-more-than-fragments
+++ a/fs/squashfs/super.c
@@ -405,7 +405,7 @@ handle_fragments:
goto check_directory_table;
msblk->fragment_cache = squashfs_cache_init("fragment",
- SQUASHFS_CACHED_FRAGMENTS, msblk->block_size);
+ min(SQUASHFS_CACHED_FRAGMENTS, fragments), msblk->block_size);
if (msblk->fragment_cache == NULL) {
err = -ENOMEM;
goto failed_mount;
_
Patches currently in -mm which might be from pangliyuan1@xxxxxxxxxx are
squashfs-dont-allocate-fragment-caches-more-than-fragments.patch
