Robert Watson 84d2b7df26 Add GIANT_REQUIRED and WITNESS sleep warnings to uprintf() and tprintf(), ... as they both interact with the tty code (!MPSAFE) and may sleep if the tty buffer is full (per comment). Modify all consumers of uprintf() and tprintf() to hold Giant around calls into these functions. In most cases, this means adding an acquisition of Giant immediately around the function. In some cases (nfs_timer()), it means acquiring Giant higher up in the callout. With these changes, UFS no longer panics on SMP when either blocks are exhausted or inodes are exhausted under load due to races in the tty code when running without Giant. NB: Some reduction in calls to uprintf() in the svr4 code is probably desirable. NB: In the case of nfs_timer(), calling uprintf() while holding a mutex, or even in a callout at all, is a bad idea, and will generate warnings and potential upset. This needs to be fixed, but was a problem before this change. NB: uprintf()/tprintf() sleeping is generally a bad ideas, as is having non-MPSAFE tty code. MFC after: 1 week		2005-09-19 16:51:43 +00:00
..
bootp_subr.c	When netbooting, as soon as we've figured out which interface we booted	2005-04-26 20:45:29 +00:00
krpc_subr.c	MFp4: use the function to fix the packet header length instead of rolling	2005-03-16 08:13:08 +00:00
krpc.h
nfs_bio.c	Remove the NFS client rslock. The rslock was used to serialize	2005-07-21 22:46:56 +00:00
nfs_diskless.c	While I'm here, list the new kenv (boot.netif.name) along with the others.	2005-04-26 20:47:59 +00:00
nfs_lock.c	For reasons unknown, the nfs locking code used a fifo to send requests to	2004-12-06 08:31:32 +00:00
nfs_lock.h	For reasons unknown, the nfs locking code used a fifo to send requests to	2004-12-06 08:31:32 +00:00
nfs_nfsiod.c	Drop Giant before calling kthread_exit().	2005-02-07 18:21:50 +00:00
nfs_node.c	In nfs_nget() if two threads race on the same filehandle, the loser should	2005-07-27 15:05:31 +00:00
nfs_socket.c	Add GIANT_REQUIRED and WITNESS sleep warnings to uprintf() and tprintf(),	2005-09-19 16:51:43 +00:00
nfs_subs.c	Make nfs_timer() MPSAFE. With this change, the bottom half of the NFS	2005-07-19 21:27:25 +00:00
nfs_vfsops.c	Fix a serious deadlock with the NFS client. Given a large enough	2005-06-10 23:50:41 +00:00
nfs_vnops.c	- cache_lookup() relocks the parent in the DOTDOT case for us.	2005-04-14 07:08:34 +00:00
nfs.h	Make nfs_timer() MPSAFE. With this change, the bottom half of the NFS	2005-07-19 21:27:25 +00:00
nfsargs.h	Fix a serious deadlock with the NFS client. Given a large enough	2005-06-10 23:50:41 +00:00
nfsdiskless.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
nfsm_subs.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
nfsmount.h	Fix a serious deadlock with the NFS client. Given a large enough	2005-06-10 23:50:41 +00:00
nfsnode.h	Remove the NFS client rslock. The rslock was used to serialize	2005-07-21 22:46:56 +00:00
nfsstats.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
nlminfo.h