btrfs: return ptr error from compression workspace
The btrfs compression wrappers translated errors from workspace allocation to either -ENOMEM or -1. The compression type workspace allocators are already returning a ERR_PTR(-ENOMEM). Just return that and get rid of the magical -1. This helps a future patch return errors from the compression wrappers. Signed-off-by: Zach Brown <zab@redhat.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
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@ -887,7 +887,7 @@ int btrfs_compress_pages(int type, struct address_space *mapping,
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workspace = find_workspace(type);
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if (IS_ERR(workspace))
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return -1;
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return PTR_ERR(workspace);
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ret = btrfs_compress_op[type-1]->compress_pages(workspace, mapping,
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start, len, pages,
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@ -923,7 +923,7 @@ static int btrfs_decompress_biovec(int type, struct page **pages_in,
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workspace = find_workspace(type);
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if (IS_ERR(workspace))
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return -ENOMEM;
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return PTR_ERR(workspace);
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ret = btrfs_compress_op[type-1]->decompress_biovec(workspace, pages_in,
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disk_start,
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@ -945,7 +945,7 @@ int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
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workspace = find_workspace(type);
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if (IS_ERR(workspace))
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return -ENOMEM;
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return PTR_ERR(workspace);
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ret = btrfs_compress_op[type-1]->decompress(workspace, data_in,
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dest_page, start_byte,
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