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c9a43aaf09
In rbio_update_error_bitmap(), we need to calculate the length of the rbio. As since it's called in the endio function, we can not directly grab the length from bi_iter. Currently we call bio_for_each_segment_all(), which will always return a range inside a page. But that's not necessary as we don't really care about anything inside the page. So use bio_for_each_bvec_all(), which can return a bvec across multiple continuous pages thus reduce the loops. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.