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Squashfs: don't allocate fragment caches more than fragments

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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@huawei.com
Signed-off-by: pangliyuan <pangliyuan1@huawei.com>
Reviewed-by: Phillip Lougher <phillip@squashfs.org.uk>
Cc: <wangfangpeng1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
pangliyuan 2024-12-10 17:08:42 +08:00 committed by Andrew Morton
parent 85f8ec4bdf
commit 848ad53b3f
1 changed files with 1 additions and 1 deletions
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2
fs/squashfs/super.c
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@ -405,7 +405,7 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc)
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;