f26044c83e
This is a regression introduced by the patch "migrate from ll_rw_block
usage to BIO".
Bio_alloc() is limited to 256 pages (1 Mbyte). This can cause a failure
when reading 1 Mbyte block filesystems. The problem is a datablock can be
fully (or almost uncompressed), requiring 256 pages, but, because blocks
are not aligned to page boundaries, it may require 257 pages to read.
Bio_kmalloc() can handle 1024 pages, and so use this for the edge
condition.
Fixes:
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| block.c | ||
| cache.c | ||
| decompressor.c | ||
| decompressor.h | ||
| decompressor_multi.c | ||
| decompressor_multi_percpu.c | ||
| decompressor_single.c | ||
| dir.c | ||
| export.c | ||
| file.c | ||
| file_cache.c | ||
| file_direct.c | ||
| fragment.c | ||
| id.c | ||
| inode.c | ||
| lz4_wrapper.c | ||
| lzo_wrapper.c | ||
| namei.c | ||
| page_actor.c | ||
| page_actor.h | ||
| squashfs.h | ||
| squashfs_fs.h | ||
| squashfs_fs_i.h | ||
| squashfs_fs_sb.h | ||
| super.c | ||
| symlink.c | ||
| xattr.c | ||
| xattr.h | ||
| xattr_id.c | ||
| xz_wrapper.c | ||
| zlib_wrapper.c | ||
| zstd_wrapper.c | ||