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Commita7c50c9404("block: pass a block_device and opf to bio_reset") moves bch_bio_map() inside journal_write_unlocked() next to the location where the modified bio_reset() was called. This change is wrong because calling bch_bio_map() immediately after bio_reset(), a BUG_ON(!bio->bi_iter.bi_size) inside bch_bio_map() will be triggered and panic the kernel. This patch puts bch_bio_map() back to its original correct location in journal_write_unlocked() and avoid the BUG_ON(). Fixes:a7c50c9404("block: pass a block_device and opf to bio_reset") Signed-off-by: Coly Li <colyli@suse.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220419160425.4148-2-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.