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erofs: put metabuf in error path in fscache mode 

For tail packing layout, put metabuf when error is encountered.

Fixes: 1ae9470c3e ("erofs: clean up .read_folio() and .readahead() in fscache mode")
Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Jia Zhu <zhujia.zj@bytedance.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20221104054028.52208-2-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
This commit is contained in:
Jingbo Xu 2022-11-04 13:40:27 +08:00 committed by Gao Xiang
parent e5126de138
commit 75e43355cb
1 changed files with 3 additions and 1 deletions
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4
fs/erofs/fscache.c
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@ -287,8 +287,10 @@ static int erofs_fscache_data_read(struct address_space *mapping,
return PTR_ERR(src);
iov_iter_xarray(&iter, READ, &mapping->i_pages, pos, PAGE_SIZE);
if (copy_to_iter(src + offset, size, &iter) != size)
if (copy_to_iter(src + offset, size, &iter) != size) {
erofs_put_metabuf(&buf);
return -EFAULT;
}
iov_iter_zero(PAGE_SIZE - size, &iter);
erofs_put_metabuf(&buf);
return PAGE_SIZE;