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authorMartin Wilck <mwilck@suse.com>2018-07-25 23:15:07 +0200
committerJens Axboe <axboe@kernel.dk>2018-07-26 11:52:29 -0600
commitb403ea2404889e1227812fa9657667a1deb9c694 (patch)
treebbe37dba31a278aaaa897261576248d51e5dc7ff /arch/x86/events
parent78e18063a9696c508dc95581fb8ec1aee539c4ee (diff)
block: bio_iov_iter_get_pages: fix size of last iovec
If the last page of the bio is not "full", the length of the last vector slot needs to be corrected. This slot has the index (bio->bi_vcnt - 1), but only in bio->bi_io_vec. In the "bv" helper array, which is shifted by the value of bio->bi_vcnt at function invocation, the correct index is (nr_pages - 1). v2: improved readability following suggestions from Ming Lei. v3: followed a formatting suggestion from Christoph Hellwig. Fixes: 2cefe4dbaadf ("block: add bio_iov_iter_get_pages()") Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/x86/events')
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