Matthew Dillon ac8f990bde This patch implements O_DIRECT about 80% of the way. It takes a patchset ... Tor created a while ago, removes the raw I/O piece (that has cache coherency problems), and adds a buffer cache / VM freeing piece. Essentially this patch causes O_DIRECT I/O to not be left in the cache, but does not prevent it from going through the cache, hence the 80%. For the last 20% we need a method by which the I/O can be issued directly to buffer supplied by the user process and bypass the buffer cache entirely, but still maintain cache coherency. I also have the code working under -stable but the changes made to sys/file.h may not be MFCable, so an MFC is not on the table yet. Submitted by: tegge, dillon		2001-05-24 07:22:27 +00:00
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ffs	Update softdep_setup_directory_add prototype to reflect changes in	2001-05-20 15:59:55 +00:00
ifs	Implement vop_std{get|put}pages() and add them to the default vop[].	2001-05-01 08:34:45 +00:00
mfs	Add a vop_stdbmap(), and make it part of the default vop vector.	2001-04-29 11:48:41 +00:00
ufs	This patch implements O_DIRECT about 80% of the way. It takes a patchset	2001-05-24 07:22:27 +00:00