John Baldwin 80893ea32b pbio: Add locking and remove D_NEEDGIANT. ... Use a sx lock to permit uiomove directly into/out of the the per-port buffers. In addition, the sx lock provides a stronger guarantee that I think this driver wants which is to single-thread read and write calls even while paused. Finally, replace tsleep with dummy wait channels with calls to pause_sig to more clearly communicate the intent. Differential Revision: https://reviews.freebsd.org/D35081 (cherry picked from commit 51f481235c)		2022-05-19 15:01:50 -07:00
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pbio.c	pbio: Add locking and remove D_NEEDGIANT.	2022-05-19 15:01:50 -07:00
pbioio.h