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hfe: Flush writes eagerly for large tracks

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This commit is contained in:
Eric Anderson 2021-03-28 12:07:12 -07:00
parent 9d44d153d2
commit 2e92b51e2f
1 changed files with 8 additions and 0 deletions
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8
src/image/hfe.c
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@ -161,6 +161,14 @@ static void hfe_setup_track(
im->cur_track = track;
}
/* If track does not fit in memory, now is a good time to flush writes to
* reduce chances of future buffer underrun caused by a very slow write.
* However if write-drain=realtime, then any delays cut into reads so we
* just accept the buffer underrun risk. */
if ((im->hfe.trk_len*2 + 511) / 512 > im->bufs.read_data.len
&& ff_cfg.write_drain != WDRAIN_realtime)
ring_io_sync(&im->hfe.ring_io);
sys_ticks = start_pos ? *start_pos : get_write(im, im->wr_cons)->start;
im->cur_bc = (sys_ticks * 16) / im->ticks_per_cell;
if (im->cur_bc >= im->tracklen_bc)