Commit Graph

524 Commits

Author SHA1 Message Date
yamt
03f80508d6 - unify ffs_blkatoff and lfs_blkatoff.
- remove ufs_ops::uo_blkatoff.
- add directory read-ahead code.  (disabled for now.)
2006-01-14 17:41:16 +00:00
yamt
2fc5e44a62 remove an obsolete prototype. 2006-01-06 09:27:55 +00:00
yamt
7b826aac85 initialize necessary members of struct buf. PR/32462 from Reinoud Zandijk. 2006-01-06 09:21:44 +00:00
yamt
690d424f28 - add simple functions to allocate/free a buffer for i/o.
- make bufpool static.
2006-01-04 10:13:05 +00:00
perry
0f0296d88a Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete. 2005-12-24 20:45:08 +00:00
christos
95e1ffb156 merge ktrace-lwp. 2005-12-11 12:16:03 +00:00
yamt
6a17dd42f4 - ignore truncation for VCHR/VBLK/VFIFO as it used to be
before yamt-vop merge.  PR/32049 from Atsushi Onoe.
- reject setattr which attempts to change size of VLNK/VSOCK.
2005-11-11 15:50:57 +00:00
yamt
a748ea88dd merge yamt-vop branch. remove following VOPs.
VOP_BLKATOFF
	VOP_VALLOC
	VOP_BALLOC
	VOP_REALLOCBLKS
	VOP_VFREE
	VOP_TRUNCATE
	VOP_UPDATE
2005-11-02 12:38:58 +00:00
simonb
ad33b0d825 We don't need <sys/systm.h> here. 2005-10-30 23:34:34 +00:00
yamt
baee927713 introduce "ufs_ops" and use it for ITIMES. 2005-09-27 06:48:55 +00:00
yamt
6138b82a56 always use nanotime rather than time.
it's bad to mix nanotime and time because it sometimes
make timestamps go backwards.
2005-09-26 13:52:20 +00:00
jmmv
2a3e5eeb7c Apply the NFS exports list rototill patch:
- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
  function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
  file sys/nfs/nfs_export.c.  The former was becoming large and its code
  is always compiled, regardless of the build options.  Using the latter,
  the code is only compiled in when NFSSERVER is enabled.  While doing this,
  also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
  path and a set of export entries.  At the moment it can only clear the
  exports list or append entries, one by one, but it is done in a way that
  allows setting the whole set of entries atomically in the future (see the
  comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
  that it becomes file system agnostic.  In fact, all this whole thing was
  done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
  exports initialization; done internally by the kernel when initializing
  the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
  subsystems can run arbitrary code upon receipt of specific VFS events.
  At the moment, this only provides support for unmount and is used to
  destroy NFS exports lists from the file systems being unmounted, though it
  has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.
2005-09-23 12:10:31 +00:00
christos
ebc4ea57cf redefine panic if we are a user program. 2005-09-13 04:40:42 +00:00
christos
3544d898ac split out lfs_itimes(). It is used in fsck_lfs. 2005-09-13 04:13:25 +00:00
christos
a12024da06 Use nanotime() to update the time fields in filesystems. Convert the code
from macros to real functions. Original patch and review from chuq.
Note: ext2fs only keeps seconds in the on-disk inode, and msdosfs does not
have enough precision for all fields, so this is not very useful for those
two.
2005-09-12 16:24:41 +00:00
christos
0b0eb1328b Don't overload MAXNAMLEN, use a separate constant for each filesystem type. 2005-08-23 08:05:13 +00:00
yamt
84c9e5bbc1 whitespace. 2005-08-22 09:08:17 +00:00
christos
b0e192f2b6 change ino_t to u_int32_t for syscall compatibility. 2005-08-22 08:53:03 +00:00
christos
50f8955b6e 64 bit inode changes. 2005-08-19 02:04:03 +00:00
christos
bce5269120 Move extern kernel variable declarations, into a _KERNEL protected session
so that the don't pollute userland's namespace.
2005-07-31 20:18:32 +00:00
yamt
b7bfe82866 update file timestamps for nfsd loaned-read and mmap.
PR/25279.  discussed on tech-kern@.
2005-07-23 12:18:41 +00:00
yamt
44d128fa8e - constify genfs_ops.
- use member designators.
2005-06-28 09:30:37 +00:00
atatat
420d91208b Properly fix the constipated lossage wrt -Wcast-qual and the sysctl
code.  I know it's not the prettiest code, but it seems to work rather
well in spite of itself.
2005-06-09 02:19:59 +00:00
christos
273df63602 - sprinkle const
- avoid shadow variables.
2005-05-29 21:25:24 +00:00
perseant
96f8f74d91 Don't update lfs_stats.segs_reclaimed if we're not keeping statistics.
Patch from Juan RP.
2005-05-25 01:50:01 +00:00
perseant
2ecd1730c0 Keep track of the number of segments reclaimed, since the cleaner doesn't
do this anymore (it hasn't for quite some time).  Add a couple of conditional
debugging messages to indicate why segments are not cleaned, in the event
that lfs_segclean is used.

Make the LFCNSEGWAITALL fcntl work again.
2005-05-20 19:48:25 +00:00
perseant
f8677583c3 VOP_LOCK drops the interlock; pick it up again to avoid an "already unlocked"
panic in lfs_putpages.
2005-05-20 19:09:25 +00:00
perseant
5760c21b8b Fill in the lfs_fsmnt field in the superblock when we mount the filesystem,
so fsck(8) can tell where it was last mounted.
2005-05-20 19:03:11 +00:00
perseant
0d41dd0d46 Don't let the pager_map deadlock avoidance code in lfs_putpages() write
segments containing zero-block FINFO records.  These records cause segments
to become uncleanable, which would eventually result in a "no clean segments"
panic.
2005-05-04 04:58:22 +00:00
perseant
5ed293c5d5 Recognize that we hold the v_interlock when relocking after a flush in
lfs_putpages.
2005-04-27 20:35:10 +00:00
skrll
d1c90589d8 Use the right arg structure for lfs_setattr, i.e. s/getattr/setattr/. 2005-04-25 06:28:51 +00:00
perseant
2f695b5476 Provide a resize_lfs(8), including kernel and cleaner support. The current
implementation requires the fs to be mounted while resizing.  Tested in both
directions, and everything appears to work happily, but ymmv.
2005-04-23 19:47:51 +00:00
perseant
f4a7694fc9 Keep per-inode, per-fs, and subsystem-wide counts of blocks allocated through
lfs_balloc(), and use that to estimate the number of dirty pages belonging
to LFS (subsystem or filesystem).  This is almost certainly wrong for
the case of a large mmap()ed region, but the accounting is tighter than
what we had before, and performs much better in the typical case of pages
dirtied through write().
2005-04-19 20:59:05 +00:00
perseant
f63fa194c2 Check the to-be-on-disk consistency of directories as well (correct a typo
in an earlier commit).
2005-04-18 23:03:08 +00:00
perseant
b2d19f57a3 Check for the inode having been previously freed, in UNMARK_VNODE().
Avoids a panic when calling mkdir() on a full filesystem.
2005-04-18 17:36:46 +00:00
perseant
5923fa20f1 Make userland compile again. 2005-04-16 19:52:09 +00:00
perseant
ad0169af41 Remove left-over reference to "lfs_blist", for _LKM case. 2005-04-16 18:10:12 +00:00
perseant
5ed792ecb0 Use splay trees, rather than a hash table, to manage the accounting of
blocks allocated through VOP_BALLOC() for pages to be written to disk.
This accounting no longer takes a noticeable fraction of the system CPU.
2005-04-16 17:35:58 +00:00
perseant
94decdd25d Use lfs_malloc() to manage the blkiov arrays that the cleaner functions use,
since the cleaner is likely to operate in a low-memory condition.
2005-04-16 17:28:37 +00:00
perseant
9936b8ce7e Tabify leading whitespace 2005-04-14 00:58:26 +00:00
perseant
f08a1ca4fa Consolidate the hash table we use to maintain the integrity of lfs_avail
into a single, system-wide table, rather than having a separate hash table
per inode.  Significantly reduces the "system" cpu usage of your average
file write.
2005-04-14 00:44:16 +00:00
perseant
2ee78c4fa9 Keep track of the highest block held by an LFS inode, so that we can
be assured that the last byte of a file is always allocated.  Previously
a file extension could cause the filesystem to be flushed, writing an
inconsistent inode to disk.  Although this condition would be corrected
the next time blocks were written to disk, an intervening crash would leave
the filesystem in an inconsistent state, leaving fsck_lfs to complain
of an inode "partially truncated".
2005-04-14 00:02:46 +00:00
perseant
af48a6d91c Clean up the handling of the pager_map deadlock in lfs_putpages, after
realizing that it is safe to sleep the second time through the loop.
2005-04-08 00:08:42 +00:00
perseant
c9d4fa4c0d Fix some locking issues that appeared with the simple_lock work.
Address a "pager_map" deadlock in lfs_putpages().
2005-04-06 04:30:46 +00:00
perseant
1ebfc508b6 Protect various per-fs structures with fs->lfs_interlock simple_lock, to
improve behavior in the multiprocessor case.  Add debugging segment-lock
assertion statements.
2005-04-01 21:59:46 +00:00
thorpej
e633e8b61b - Define a VFS_ATTACH() macro that places a reference to a vfsops structure
into the "vfsops" link set.
- Use VFS_ATTACH() where vfsops are declared for individual file systems.
- In vfsinit(), traverse the "vfsops" link set, rather than vfs_list_initial[].
2005-03-29 02:41:05 +00:00
christos
f2b82c7f8a make this compile again :-( 2005-03-26 19:40:31 +00:00
christos
aca59c847f Use vlog(9). Open-coding vlog here breaks lkm's because including
<sys/kprintf.h> includes opt_multiprocessor.h. One could argue
that the lock stuff should just move to subr_prf.c since nothing
else uses it.
2005-03-26 19:39:08 +00:00
perseant
bb7bbb2d16 Don't sleep while holding the vnode interlock. Should take care of the
first panic case in PR #26043.
2005-03-25 01:45:05 +00:00
chs
f31a80ccd3 avoid the need for recursive locking lfs_flush_dirops() by unlocking
the vnode around the call to this in the caller.
2005-03-24 04:00:33 +00:00