From: Gao Xiang <hsiangkao@linux.alibaba.com> To: linux-erofs@lists.ozlabs.org Cc: Gao Xiang <hsiangkao@linux.alibaba.com>, LKML <linux-kernel@vger.kernel.org> Subject: [PATCH 1/2] erofs: Revert "erofs: fix kvcalloc() misuse with __GFP_NOFAIL" Date: Thu, 9 Mar 2023 13:31:47 +0800 [thread overview] Message-ID: <20230309053148.9223-1-hsiangkao@linux.alibaba.com> (raw) 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@linux.alibaba.com Fixes: 12724ba38992 ("erofs: fix kvcalloc() misuse with __GFP_NOFAIL") Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- 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 3247d2422bea..f1708c77a991 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -1312,12 +1312,12 @@ 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); @@ -1365,7 +1365,7 @@ 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) { @@ -1384,7 +1384,7 @@ 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; -- 2.24.4
WARNING: multiple messages have this Message-ID (diff)
From: Gao Xiang <hsiangkao@linux.alibaba.com> To: linux-erofs@lists.ozlabs.org Cc: LKML <linux-kernel@vger.kernel.org>, Gao Xiang <hsiangkao@linux.alibaba.com> Subject: [PATCH 1/2] erofs: Revert "erofs: fix kvcalloc() misuse with __GFP_NOFAIL" Date: Thu, 9 Mar 2023 13:31:47 +0800 [thread overview] Message-ID: <20230309053148.9223-1-hsiangkao@linux.alibaba.com> (raw) 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@linux.alibaba.com Fixes: 12724ba38992 ("erofs: fix kvcalloc() misuse with __GFP_NOFAIL") Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- 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 3247d2422bea..f1708c77a991 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -1312,12 +1312,12 @@ 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); @@ -1365,7 +1365,7 @@ 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) { @@ -1384,7 +1384,7 @@ 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; -- 2.24.4
next reply other threads:[~2023-03-09 5:32 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-09 5:31 Gao Xiang [this message] 2023-03-09 5:31 ` [PATCH 1/2] erofs: Revert "erofs: fix kvcalloc() misuse with __GFP_NOFAIL" Gao Xiang 2023-03-09 5:31 ` [PATCH 2/2] erofs: get rid of an useless DBG_BUGON Gao Xiang 2023-03-09 5:31 ` Gao Xiang 2023-03-09 14:34 ` Chao Yu 2023-03-09 14:30 ` [PATCH 1/2] erofs: Revert "erofs: fix kvcalloc() misuse with __GFP_NOFAIL" Chao Yu
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