[PATCH v4 0/2] block: Allow merging of tail pages into the last segment

[Jan Vesely]

Hi

These patches modify __bio_add_page to accept pages that extent the last bio
segment. some drivers craft their buffers and rely on this behavior (see
message in patch 2 for details)


jan

v4: whitespace fixes to make checkpatch happy

v3: Use code from __blk_recalc_rq_segments to decide whether the page is
    mergeable, 

v2: modify a comment


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