Mark Johnston 30038a8b4e md: Get rid of the pbuf zone ... The zone is used solely to provide KVA for mapping BIOs so that we can pass mapped buffers to VOP_READ and VOP_WRITE. Currently we preallocate nswbuf/10 bufs for this purpose during boot. The intent was to limit KVA usage on 32-bit systems, but the preallocation means that we in fact consumed more KVA than needed unless one has more than nswbuf/10 (typically 25) vnode-backed MD devices in existence, which I would argue is the uncommon case. Meanwhile, all I/O to an MD is handled by a dedicated thread, so we can instead simply preallocate the KVA region at MD device creation time. Event: BSDCan 2023 Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D40215		2023-05-23 10:27:10 -04:00
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embedfs.S	Use a template assembly file to generate the embedded MFS.	2020-10-20 16:48:45 +00:00
md.c	md: Get rid of the pbuf zone	2023-05-23 10:27:10 -04:00