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path: root/sys/kern/vfs_subr.c
AgeCommit message (Collapse)Author
2006-06-14move vfs_busy() to rwlocks and properly hide the locking api from vfsNikolay Sturm
ok tedu, pedro
2006-06-02Add a clonable devices implementation. Hacked along with thib@, inputPedro Martelletto
from krw@ and toby@, subliminal prodding from dlg@, okay deraadt@.
2006-05-28Spacing in vfs_sysctl()Pedro Martelletto
2006-05-07forgot to remove this sentence from the commentNikolay Sturm
ok pedro
2006-04-30remove the simplelock argument from vfs_busy() which is currently notNikolay Sturm
used and will never be used this way in VFS requested by and ok pedro, ok krw, biorn
2006-04-19Remove unused mount list simple_lock() gooPedro Martelletto
2006-01-09Put vprint() under DIAGNOSTIC, as to save space in generated ramdisks.Pedro Martelletto
Inspiration from miod@, okay deraadt@. Tested on i386, macppc and amd64.
2005-11-30No need for vfs_busy() and vfs_unbusy() to take a process pointerPedro Martelletto
anymore. Testing by jolan@, thanks.
2005-11-24Remove kernfs, okay deraadt@.Pedro Martelletto
2005-11-19Remove unnecessary lockmgr() archaism that was costing too much in termsPedro Martelletto
of panics and bugfixes. Access curproc directly, do not expect a process pointer as an argument. Should fix many "process context required" bugs. Incentive and okay millert@, okay marc@. Various testing, thanks.
2005-11-18Work around yet another race on non-locking file systems: when callingPedro Martelletto
VOP_INACTIVE() in vrele() and vput(), we may sleep. Since there's no locking of any kind, someone can vget() the vnode and vrele() it while we sleep, beating us in getting the vnode on the free list.
2005-11-08Missed one use of 'register'Pedro Martelletto
2005-11-07Use ANSI function declarations and deregister, no binary changePedro Martelletto
2005-10-19Remove v_vnlock from struct vnode, okay krw@ tedu@Pedro Martelletto
2005-05-26RIP stackable filesystems, ok marius@ tedu@, discussed with deraadt@Pedro Martelletto
2005-05-24when a device vnode associated with a mount point disappears, mark thePedro Martelletto
filesystem as doomed and unmount it
2005-05-22put VLOCKSWORK stuff under a single option, VFSDEBUGPedro Martelletto
2005-05-01check for VBIOONFREELIST and VBIOONSYNCLIST in vprint(), okay marius@Pedro Martelletto
2005-03-24always good to check for invalid values. ok marius pedroTed Unangst
2005-01-10change vget() to only put a vnode back on the free lists if it actuallyPedro Martelletto
was there. should fix a (rare) corner case introduced by my last commit. ok tedu@, testing by joris, moritz@, danh@, otto@ and krw@. many thanks.
2004-12-31sprinkle some more list macros in herePedro Martelletto
2004-12-31when releasing a vnode, make it inactive before sticking it to one ofPedro Martelletto
the free lists. should fix some races on filesystems that don't have locks, such as nfs. also, it allows for a more straightforward way of releasing vnodes (nodes that are going to be recycled don't have to be moved to the head of the list). tested by many, thanks. ok tedu@ deraadt@
2004-12-28clean dirty accident by miodTheo de Raadt
2004-12-26Use list and queue macros where applicable to make the code easier to read;Miod Vallat
no change in compiler assembly output.
2004-12-09minor spacing/styling nitsPedro Martelletto
2004-08-04Uninline vputonfreelist.Artur Grabowski
2004-08-04better commentsPedro Martelletto
2004-08-02- check for LK_NOWAIT on vget()Pedro Martelletto
- use ltsleep() instead of the unlock + sleep combo ok art@, inspiration from free/net
2004-05-27make acct(2) optional with ACCOUNTINGTed Unangst
ok art@ deraadt@
2004-05-27shutdown accounting before shutting down vfs. should prevent some panics.Ted Unangst
ok david@ millert@ (iirc)
2004-04-25radix tree with multipath support. from kame. deraadt okJun-ichiro itojun Hagino
user visible changes: - you can add multiple routes with same key (route add A B then route add A C) - you have to specify gateway address if there are multiple entries on the table (route delete A B, instead of route delete A) kernel change: - radix_node_head has an extra entry - rnh_deladdr takes extra argument TODO: - actually take advantage of multipath (rtalloc -> rtalloc_mpath)
2004-01-09back out vnode parents. weird breakge found in ports treeTed Unangst
2004-01-06keep track of a vnode's parent dir. ufs only, and unused atm, butTed Unangst
the fun stuff is coming. testing by brad.
2003-07-21remove caddr_t casts. it's just silly to cast something when the functionTed Unangst
takes a void *. convert uiomove to take a void * as well. ok deraadt@
2003-06-02Remove the advertising clause in the UCB license which BerkeleyTodd C. Miller
rescinded 22 July 1999. Proofed by myself and Theo.
2003-05-13Back out previous change that causes "vnode table full" for large-scaleChristian Weisgerber
file operations.
2003-05-13do reclaim LAYER vnodes, no good reason not toTed Unangst
2003-05-06attempt to put a process's cwd back in place after a forced umount.Ted Unangst
won't always work, but it's the best we can do for now. this covers at least some of the failure cases the previous commit to vfs_lookup.c checks for. ok weingart@
2003-05-01several related changes:Ted Unangst
vfs_subr.c: add a missing simple_lock_init for vnode interlock try to avoid reclaiming locked or layered vnodes initialize vnlock pointer to NULL remove old code to free vnlock, never used lockinit the new vnode lock vfs_syscalls.c: support for VLAYER flag vnode_if.sh: support for splitting VDESC flags vnode_if.src: split VDESC flags WILLPUT is the combination of WILLRELE and WILLUNLOCK most uses for WILLRELE become WILLPUT vnode.h: add v_lock to struct vnode add VLAYER flag update for new VDESC flags
2003-04-06strcat/strcpy/sprintf cleanup. krw@, anil@ ok. art@ tested sparc64.Hakan Olsson
2002-08-11Add two missing vfs_busy calls in the failure path of sysctl_vnode.Artur Grabowski
Found by aaron@ NOTE - I think we need a mount-point iterator just like we have NOTE - vfs_mount_foreach_vnode. (btw. why don't we use foreach_vnode in here?)
2002-07-12Change the locking on the mountpoint slightly. Instead of using mnt_lockArtur Grabowski
to get shared locks for lookup and get the exclusive lock only with LK_DRAIN on unmount and do the real exclusive locking with flags in mnt_flags, we now use shared locks for lookup and an exclusive lock for unmount. This is accomplished by slightly changing the semantics of vfs_busy. Old vfs_busy behavior: - with LK_NOWAIT set in flags, a shared lock was obtained if the mountpoint wasn't being unmounted, otherwise we just returned an error. - with no flags, a shared lock was obtained if the mountpoint was being unmounted, otherwise we slept until the unmount was done and returned an error. LK_NOWAIT was used for sync(2) and some statistics code where it isn't really critical that we get the correct results. 0 was used in fchdir and lookup where it's critical that we get the right directory vnode for the filesystem root. After this change vfs_busy keeps the same behavior for no flags and LK_NOWAIT. But if some other flags are passed into it, they are passed directly into lockmgr (actually LK_SLEEPFAIL is always added to those flags because if we sleep for the lock, that means someone was holding the exclusive lock and the exclusive lock is only held when the filesystem is being unmounted. More changes: dounmount must now be called with the exclusive lock held. (before this the caller was supposed to hold the vfs_busy lock, but that wasn't always true). Zap some (now) unused mount flags. And the highlight of this change: Add some vfs_busy calls to match some vfs_unbusy calls, especially in sys_mount. (lockmgr doesn't detect the case where we release a lock noone holds (it will do that soon)). If you've seen hangs on reboot with mfs this should solve it (I repeat this for the fourth time now, but this time I spent two months fixing and redesigning this and reading the code so this time I must have gotten this right).
2002-06-16When processing the KERN_VNODE sysctl, the kernel builds a packed structure,Miod Vallat
while pstat(8) expects a C structure abiding the regular structure packing rules. This caused pstat -v to break on powerpc. Unbreak the confusion by defining the structure in a common header file, and having the kernel use it. ok millert@ deraadt@
2002-06-08Use ltsleep in vfs_busy.Artur Grabowski
2002-05-16sprinkle some splassert(IPL_BIO) in some functions that are commented as ↵Artur Grabowski
"should be called at splbio()"
2002-03-14First round of __P removal in sysTodd C. Miller
2002-02-04Cleanup mountroot-related definitions.Miod Vallat
2002-01-23Pool deals fairly well with physical memory shortage, but it doesn't dealArtur Grabowski
well (not at all) with shortages of the vm_map where the pages are mapped (usually kmem_map). Try to deal with it: - group all information the backend allocator for a pool in a separate struct. The pool will only have a pointer to that struct. - change the pool_init API to reflect that. - link all pools allocating from the same allocator on a linked list. - Since an allocator is responsible to wait for physical memory it will only fail (waitok) when it runs out of its backing vm_map, carefully drain pools using the same allocator so that va space is freed. (see comments in code for caveats and details). - change pool_reclaim to return if it actually succeeded to free some memory, use that information to make draining easier and more efficient. - get rid of PR_URGENT, noone uses it.
2001-12-19UBC was a disaster. It worked very good when it worked, but on someArtur Grabowski
machines or some configurations or in some phase of the moon (we actually don't know when or why) files disappeared. Since we've not been able to track down the problem in two weeks intense debugging and we need -current to be stable, back out everything to a state it had before UBC. We apologise for the inconvenience.
2001-12-10No need to initialize the uobj on every getnewvnode. Just doArtur Grabowski
it when allocating. Add some improved diagnostics.
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