From 7b83060b1eab4456b3dfaef636dfd5c0ff705b17 Mon Sep 17 00:00:00 2001
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Wed, 25 Mar 2020 21:27:51 +0100
Subject: [PATCH] fs: ext4: Fix alignment of cache buffers
We need to align the cache buffer to ARCH_DMA_MINALIGN in order to avoid
access errors like
CACHE: Misaligned operation at range [be0231e0, be0235e0]
seen on the MCIMX7SABRE.
Fixes: d5aee659f217 ("fs: ext4: cache extent data")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
---
fs/ext4/ext4fs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index 1c616a26a2..966b427a97 100644
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -288,7 +288,7 @@ int ext_cache_read(struct ext_block_cache *cache, lbaint_t block, int size)
if (cache->buf && cache->block == block && cache->size == size)
return 1;
ext_cache_fini(cache);
- cache->buf = malloc(size);
+ cache->buf = memalign(ARCH_DMA_MINALIGN, size);
if (!cache->buf)
return 0;
if (!ext4fs_devread(block, 0, size, cache->buf)) {
--
2.39.5