ide-tape: refit tape data buffer bits/kill pipelining
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- v1 Latest5 patches 3 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/5 | ide-tape: improve buffer allocation strategydrivers/ | +36 | 1 reply | |
| 2/5 | ide-tape: mv tape->stage_size tape->buffer_sizedrivers/ | +29 | 0 replies | |
| 3/5 | ide-tape: mv tape->pages_per_stage tape->pages_per_bufferdrivers/ | +4 | 0 replies | |
| 4/5 | ide-tape: improve buffer pages freeing strategydrivers/ | +19 | 1 reply | |
| 5/5 | ide-tape: remove the last remains of pipeliningdrivers/ | +65 | 1 reply |
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Cover letter [PATCH 0/5] ide-tape: refit tape data buffer bits/kill pipelining
Hi Bart,
This patchset refits the tape->merge_stage pipeline stage into tape->bh, a singly linked list of idetape_bh's, each of which is a tag attached to one or more pages serving as a buffer for data requests. The original functionality is kept wrt collecting data in the buffer and flushing it to the hardware when full.
Currently, the data rq's are serialized on the block interface and it would probably be better to return immediately after issuing it over ide_do_drive_cmd() in order to increase throughput, proper locking and testing implied of course.
drivers/ide/ide-tape.c | 393 +++++++++++++++++------------------------------- 1 files changed, 135 insertions(+), 258 deletions(-)