Commit Graph

22 Commits

Author SHA1 Message Date
Edward Tomasz Napierala
fb231f3627 Make gjournal work with kernel compiled with "options DIAGNOSTIC".
Previously, it would panic immediately.

Reviewed by:	pjd
Approved by:	re (kib)
2009-06-30 14:34:06 +00:00
Attilio Rao
dfd233edd5 Remove the thread argument from the FSD (File-System Dependent) parts of
the VFS.  Now all the VFS_* functions and relating parts don't want the
context as long as it always refers to curthread.

In some points, in particular when dealing with VOPs and functions living
in the same namespace (eg. vflush) which still need to be converted,
pass curthread explicitly in order to retain the old behaviour.
Such loose ends will be fixed ASAP.

While here fix a bug: now, UFS_EXTATTR can be compiled alone without the
UFS_EXTATTR_AUTOSTART option.

VFS KPI is heavilly changed by this commit so thirdy parts modules needs
to be recompiled.  Bump __FreeBSD_version in order to signal such
situation.
2009-05-11 15:33:26 +00:00
Andrew Thompson
853a10a581 Revert r190676,190677
The geom and CAM changes for root_hold are the wrong solution for USB design
quirks.

Requested by:	scottl
2009-04-10 04:08:34 +00:00
Andrew Thompson
626fc9fe3d Add a how argument to root_mount_hold() so it can be passed NOWAIT and be called
in situations where sleeping isnt allowed.
2009-04-03 19:46:12 +00:00
Edward Tomasz Napierala
d27a975f72 Make it possible to use gjournal for the root filesystem. Previously,
an unclean shutdown would make it impossible to mount rootfs at boot.

PR:		kern/128529
Reviewed by:	pjd
Approved by:	rwatson (mentor)
Sponsored by:	FreeBSD Foundation
2008-12-06 11:33:10 +00:00
Attilio Rao
83b3bdbc8a Improve VFS locking:
- Implement real draining for vfs consumers by not relying on the
  mnt_lock and using instead a refcount in order to keep track of lock
  requesters.
- Due to the change above, remove the mnt_lock lockmgr because it is now
  useless.
- Due to the change above, vfs_busy() is no more linked to a lockmgr.
  Change so its KPI by removing the interlock argument and defining 2 new
  flags for it: MBF_NOWAIT which basically replaces the LK_NOWAIT of the
  old version (which was unlinked from the lockmgr alredy) and
  MBF_MNTLSTLOCK which provides the ability to drop the mountlist_mtx
  once the mnt interlock is held (ability still desired by most consumers).
- The stub used into vfs_mount_destroy(), that allows to override the
  mnt_ref if running for more than 3 seconds, make it totally useless.
  Remove it as it was thought to work into older versions.
  If a problem of "refcount held never going away" should appear, we will
  need to fix properly instead than trust on such hackish solution.
- Fix a bug where returning (with an error) from dounmount() was still
  leaving the MNTK_MWAIT flag on even if it the waiters were actually
  woken up. Just a place in vfs_mount_destroy() is left because it is
  going to recycle the structure in any case, so it doesn't matter.
- Remove the markercnt refcount as it is useless.

This patch modifies VFS ABI and breaks KPI for vfs_busy() so manpages and
__FreeBSD_version will be modified accordingly.

Discussed with:	kib
Tested by:	pho
2008-11-02 10:15:42 +00:00
Attilio Rao
59d4932531 Decontextualize vfs_busy(), vfs_unbusy() and vfs_mount_alloc() functions.
Manpages are updated accordingly.

Tested by:	Diego Sardina <siarodx at gmail dot com>
2008-08-31 14:26:08 +00:00
Ulf Lilleengen
7e7a4e1d18 - Fix spelling errors.
Approved by:    kib (mentor)
PR:             kern/124788
Submitted by:   Hywel Mallett <Hywel -at- hmallett.co.uk>
2008-06-20 19:48:18 +00:00
Julian Elischer
3745c395ec Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0  so that we can eventually MFC the
new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
Jeff Roberson
982d11f836 Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
   sychronization.
 - Use the per-process spinlock rather than the sched_lock for per-process
   scheduling synchronization.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-05 00:00:57 +00:00
David Malone
041b706b2f Despite several examples in the kernel, the third argument of
sysctl_handle_int is not sizeof the int type you want to export.
The type must always be an int or an unsigned int.

Remove the instances where a sizeof(variable) is passed to stop
people accidently cut and pasting these examples.

In a few places this was sysctl_handle_int was being used on 64 bit
types, which would truncate the value to be exported.  In these
cases use sysctl_handle_quad to export them and change the format
to Q so that sysctl(1) can still print them.
2007-06-04 18:25:08 +00:00
Pawel Jakub Dawidek
68474f1930 Sysctl description is not a format string, so one % is enough. 2007-04-06 12:53:54 +00:00
Pawel Jakub Dawidek
52b509e738 Add missing \n. 2007-03-22 15:42:13 +00:00
Pawel Jakub Dawidek
9cb9930ea6 Softc may be NULL in g_journal_orphan(), so don't be surprised. 2006-12-02 09:10:29 +00:00
Pawel Jakub Dawidek
95de128d55 Fix ia64 build breakage. 2006-11-02 16:24:18 +00:00
Pawel Jakub Dawidek
41517ab2e9 - Use g_duplicate_bio() instead of g_clone_bio(), so there memory is
allocated with M_WAITOK flag.
- Check 'buf' instead of 'error' so Prevent is not confused.

CID:		1562, 1563
Found by:	Coverity Prevent analysis tool
2006-11-02 09:14:18 +00:00
Pawel Jakub Dawidek
3398f41fc0 Grr, fix one more build breakage. 2006-11-02 00:37:39 +00:00
Pawel Jakub Dawidek
f187490a2d Change spaces to tabs where needed. 2006-11-01 22:16:53 +00:00
Pawel Jakub Dawidek
8e570b35f7 Forgot to remove this line.
Reported by:	maxim
2006-11-01 14:09:59 +00:00
Pawel Jakub Dawidek
3911a26e74 Update the code to the current sync(2) version:
- Do not modify mnt_flag without mount interlock held.
- Do not touch MNT_ASYNC flag, as this can lead to a race with nmount(2).

Pointed out by:	tegge
Reviewed by:	tegge
2006-11-01 09:37:11 +00:00
Pawel Jakub Dawidek
ff4ff59d64 Remove debugging code I accidentally committed. 2006-11-01 01:19:13 +00:00
Pawel Jakub Dawidek
a23d879f34 Add gjournal GEOM class (kernel side), which implements block level
journaling and can be tought about marking file system as clean before
doing journal switch, which easly allows to add journaling to file
systems that don't have this feature.

Sponsored by:	home.pl
2006-10-31 21:31:00 +00:00