From: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
[ Upstream commit 647dd2c3f0e16b71a1a77897d038164d48eea154 ]
Let's revert commit 12724ba38992 ("erofs: fix kvcalloc() misuse with
__GFP_NOFAIL") since kvmalloc() already supports __GFP_NOFAIL in commit
a421ef303008 ("mm: allow !GFP_KERNEL allocations for kvmalloc"). So
the original fix was wrong.
Actually there was some issue as [1] discussed, so before that mm fix
is landed, the warn could still happen but applying this commit first
will cause less.
[1] https://lore.kernel.org/r/20230305053035.1911-1-hsiangkao@xxxxxxxxxxxxxxxxx
Fixes: 12724ba38992 ("erofs: fix kvcalloc() misuse with __GFP_NOFAIL")
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230309053148.9223-1-hsiangkao@xxxxxxxxxxxxxxxxx
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/erofs/zdata.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 5200bb86e2643..ccf7c55d477fe 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1032,12 +1032,12 @@ static int z_erofs_decompress_pcluster(struct z_erofs_decompress_backend *be,
if (!be->decompressed_pages)
be->decompressed_pages =
- kcalloc(be->nr_pages, sizeof(struct page *),
- GFP_KERNEL | __GFP_NOFAIL);
+ kvcalloc(be->nr_pages, sizeof(struct page *),
+ GFP_KERNEL | __GFP_NOFAIL);
if (!be->compressed_pages)
be->compressed_pages =
- kcalloc(pclusterpages, sizeof(struct page *),
- GFP_KERNEL | __GFP_NOFAIL);
+ kvcalloc(pclusterpages, sizeof(struct page *),
+ GFP_KERNEL | __GFP_NOFAIL);
z_erofs_parse_out_bvecs(be);
err2 = z_erofs_parse_in_bvecs(be, &overlapped);
@@ -1085,7 +1085,7 @@ static int z_erofs_decompress_pcluster(struct z_erofs_decompress_backend *be,
}
if (be->compressed_pages < be->onstack_pages ||
be->compressed_pages >= be->onstack_pages + Z_EROFS_ONSTACK_PAGES)
- kfree(be->compressed_pages);
+ kvfree(be->compressed_pages);
z_erofs_fill_other_copies(be, err);
for (i = 0; i < be->nr_pages; ++i) {
@@ -1104,7 +1104,7 @@ static int z_erofs_decompress_pcluster(struct z_erofs_decompress_backend *be,
}
if (be->decompressed_pages != be->onstack_pages)
- kfree(be->decompressed_pages);
+ kvfree(be->decompressed_pages);
pcl->length = 0;
pcl->partial = true;
--
2.39.2
