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| author | Peter Wemm <peter@FreeBSD.org> | 2001-12-19 01:31:12 +0000 |
|---|---|---|
| committer | Peter Wemm <peter@FreeBSD.org> | 2001-12-19 01:31:12 +0000 |
| commit | 8f0d41d324137c87f2e7ec4cb82f7d77f6caf353 (patch) | |
| tree | 453a1928686abed90a1e485ce457ef1a21d92127 /sys/kern/vfs_subr.c | |
| parent | c8e555ec14ee277434ebeaf45156bfab40cfd4fc (diff) | |
| download | src-8f0d41d324137c87f2e7ec4cb82f7d77f6caf353.tar.gz src-8f0d41d324137c87f2e7ec4cb82f7d77f6caf353.zip | |
Use a different mechanism to get the vnlru process to wake up and notice
the shutdown request at reboot/halt time.
Disable the printf 'vnlru process getting nowhere, pausing...' and instead
export the count to the debug.vnlru_nowhere sysctl.
Notes
Notes:
svn path=/head/; revision=88160
Diffstat (limited to 'sys/kern/vfs_subr.c')
| -rw-r--r-- | sys/kern/vfs_subr.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index ae297f0b1723..840cac8bd9cf 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -247,6 +247,9 @@ SYSCTL_INT(_kern, KERN_MAXVNODES, maxvnodes, CTLFLAG_RW, static int minvnodes; SYSCTL_INT(_kern, OID_AUTO, minvnodes, CTLFLAG_RW, &minvnodes, 0, "Minimum number of vnodes"); +static int vnlru_nowhere = 0; +SYSCTL_INT(_debug, OID_AUTO, vnlru_nowhere, CTLFLAG_RW, &vnlru_nowhere, 0, + "Number of times the vnlru process ran without success"); /* * Initialize the vnode management data structures. @@ -594,7 +597,7 @@ vnlru_proc(void) kthread_suspend_check(p); if (numvnodes - freevnodes <= desiredvnodes * 9 / 10) { vnlruproc_sig = 0; - tsleep(&vnlruproc, PVFS, "vlruwt", hz); + tsleep(vnlruproc, PVFS, "vlruwt", 0); continue; } done = 0; @@ -611,8 +614,15 @@ vnlru_proc(void) } mtx_unlock(&mountlist_mtx); if (done == 0) { - printf("vnlru process getting nowhere, pausing..\n"); - tsleep(&vnlru_proc, PPAUSE, "vlrup", hz * 3); +#if 0 + /* These messages are temporary debugging aids */ + if (vnlru_nowhere < 5) + printf("vnlru process getting nowhere..\n"); + else if (vnlru_nowhere == 5) + printf("vnlru process messages stopped.\n"); +#endif + vnlru_nowhere++; + tsleep(vnlru_proc, PPAUSE, "vlrup", hz * 3); } } splx(s); @@ -655,7 +665,7 @@ getnewvnode(tag, mp, vops, vpp) */ if (vnlruproc_sig == 0 && numvnodes - freevnodes > desiredvnodes) { vnlruproc_sig = 1; /* avoid unnecessary wakeups */ - wakeup(&vnlruproc); + wakeup(vnlruproc); } /* |