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506 Commits

Author SHA1 Message Date
enami
9e1deeab34 Add missing pageq lock while uvm_pagefree() is called (either directly 
or indirectly).  Reviewed by chuq.
 2002-05-29 11:04:39 +00:00
enami
1578726840 Just give up to do readahead rather than waiting busy pages. 
While I'm here, added few patchable variable so that one can
easily measure readahead behaviour.
 2002-05-18 02:54:57 +00:00
perseant
3fa1c8abe9 Protect v_synclist with splbio(); note that LIST_REMOVE is not an idempotent 
operation if more than one LIST_REMOVE happens on interrupt, so both the test
for VONWORKLIST and the LIST_REMOVE(vp, v_synclist) need to be in splbio().
 2002-05-14 19:37:18 +00:00
matt
ea5cd1699b Extern speclisth 2002-05-12 20:42:03 +00:00
enami
293906a53a Redo rev. 1.57 a bit different way; don't use `tpg' since it may be freed. 
Subtract the number of pages behind us when calculating new offset instead.
 2002-05-10 07:51:37 +00:00
enami
911c9febb2 Don't modify the local variable `n' in genfs_putpages(). It should contain 
the number of elements in the page array at the beginning of every iteration.
 2002-05-10 02:51:44 +00:00
thorpej
f1f51aa2b8 Move code shared by procfs and the kernel proper out of procfs and 
into the kernel proper (renaming functions from procfs_* to process_*).
 2002-05-09 15:44:44 +00:00
enami
e3cc9c0682 When traversing by list, if the page next to us is a page in the cluster, 
advance the pointer.
 2002-05-09 07:22:09 +00:00
enami
fabaf9a730 - In genfs_putpages(), no need to restrict the cluster within the given 
region.
- In uvm_aio_aiodone(), remove assertions no longer true.
 2002-05-09 07:14:37 +00:00
enami
8876669f4c Since npages may includes number of pages behind us, we can't use it to 
update current offset.  Instead, use the last page in the run of pages
to calculate new offset.
 2002-05-06 00:42:22 +00:00
enami
e6513c283e Stylistic change; introduce new local variable and use it instead of 
sprinkling different expression to test if we're pagedaemon.
 2002-05-06 00:18:15 +00:00
enami
6335b88f05 We don't need to re-activate page in genfs_putpages() when GOP_WRITE returns 
ENOMEM (temporary memory shortage) since it is already handled in
uvm_aio_aiodone() for both async/sync case.  Discussed with chuq.
 2002-04-26 03:57:31 +00:00
thorpej
37dc008ca3 Cleanup how file system configuration information is declared, grouping 
related information together, with the file system code itself.

This is just low-hanging fruit -- more to come.
 2002-04-16 23:14:05 +00:00
enami
6cfcfb947c genfs_{compat_}getpages(): For PGO_LOCKED request, it is safe to return 
read only page if it was due to read fault.  This avoid many unnecessary
read fault introduced by recent nfs_bio.c change.  Reviewed by chuq.
 2002-04-16 06:05:05 +00:00
enami
08625200a0 KNF and other misc. cosmetic changes. 2002-04-16 06:00:46 +00:00
jdolecek
83bb6f6dd7 Changes to make it less likely to need to be revisited later again: 
* fdesc_attr(): don't panic for 'unknown' descriptor types, rather use
  (*fp->f_ops->fo_stat)() hook, as for DTYPE_SOCKET and DTYPE_PIPE
  XXX perhaps use different vnode type than VBAD for these?
* fdesc_setattr(): just return 0 regardless of type, rather than paniccing
  for 'unknown' descriptor types
 2002-04-02 17:46:06 +00:00
jmc
70ba374a66 Treat pipes like sockets and don't do setattr on them 2002-04-02 10:34:54 +00:00
chs
72c455ce83 in genfs_compat_getpages(), clear any part of a page that 
VOP_READ() doesn't fill in (eg. because it's past EOF).
 2002-03-22 03:51:51 +00:00
atatat
31144d9976 Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for 
indicating an unhandled "command".  ERESTART is -1, which can lead to
confusion.  ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4.  No ioctl code should now return -1 anywhere.  The
ioctl() system call is now properly restartable.
 2002-03-17 19:40:26 +00:00
chs
a51be40dcb don't yield the cpu in genfs_putpages() if we're the pagedaemon. 
pointed out by enami.  fixes PR 15784.
 2002-03-02 06:58:01 +00:00
enami
9a623b9870 Don't use MALLOC for variable sized allocation. 2002-02-20 06:16:22 +00:00
chs
96f907f394 fix two problems: 
- when yielding the cpu while using the vnode's page list, use a marker page
   to keep our place in the list (like the other cases where we drop the lock).
 - wait until no one else has the page busy before deciding if the page needs
   to be cleaned.  a page will be dirty while it's being initialized but will
   be marked clean before PG_BUSY is cleared.
both found by enami.
 2002-02-19 15:49:39 +00:00
enami
fe24174a3b Don't bother to subtract 0. 2002-02-13 05:20:41 +00:00
enami
52a2a21502 Don't leave junk in pgs[] array since it will be passed to uvn_findpages() 
again.
 2002-02-12 01:08:12 +00:00
chs
0365a63944 in genfs_putpages(): 
- yield the cpu if we've taken too long.
 - when traversing by offset, skip over any pages that we clustered.
 2002-01-26 02:44:27 +00:00
christos
5ff60a19d9 Don't hide the real return code with EPERM. 2002-01-12 18:51:56 +00:00
christos
5266303896 When checking for permissions, include the P_INEXEC test and return 
EAGAIN if the process is exec'ing.
 2002-01-12 18:51:31 +00:00
christos
67c310f08c Apply the same P_INEXEC test to avoid the execve/trace problem using 
the procfs ptrace calls.
 2002-01-11 22:02:56 +00:00
chs
2776bd066f add the entry for layer_getpages() to the VOP tables of the 
layered file systems that need it.
 2002-01-04 07:19:33 +00:00
chs
03ea276e84 in genfs_gop_write(), actually set the B_ASYNC flag on buffers that we're 
not going to wait for.  this doesn't matter for real devices since we call
VOP_STRATEGY() directly, but NFS uses this flag to decide whether or not
to hand the buffer off to an nfsiod thread.
 2001-12-31 06:44:58 +00:00
chs
64b0c2adbb in genfs_putpages(), we must wait for any pending write i/os to complete 
if the putpages request is synchronous.
 2001-12-31 06:40:08 +00:00
chs
40bf5f0e12 add some compatibility routines to allow mmap() to work non-UBCified 
filesystems (in the same non-coherent fashion that they worked before).
 2001-12-18 07:49:36 +00:00
chs
8e9cdbbd63 replace "vnode" and "vtext" with "file" and "exec" in uvmexp field names. 2001-12-09 03:07:43 +00:00
chs
0931f31deb add a VOP_PUTPAGES method for all the filesystems that don't have pages. 
do all the work for destroying syncfs vnodes in vfs_deallocate_syncvnode()
to make some new assertions work out.
 2001-12-06 04:30:49 +00:00
chs
1361ca58eb be consistent, clear VONWORKLST when we take a syncer vnode off the 
syncer list.
 2001-12-06 04:29:55 +00:00
chs
4d14671458 add VOP_GETPAGES and VOP_PUTPAGES methods for layered filesystems. 
drop the interlock on the upper layer, acquire the interlock on the
lower layer.
 2001-12-06 04:29:23 +00:00
chs
5a690c92a1 add a VOP_PUTPAGES method for all the filesystems that don't have pages, 
just unlock the interlock.
 2001-12-06 04:27:40 +00:00
thorpej
03efee5585 * Allow machine-dependent code to specify hooks for ptrace(2) 
(__HAVE_PTRACE_MACHDEP) and procfs (__HAVE_PROCFS_MACHDEP).
  These changes will allow platforms like x86 (XMM) and PowerPC
  (AltiVec) to export extended register sets in a sane manner.

* Use __HAVE_PTRACE_MACHDEP to export x86 XMM registers (standard
  FP + SSE/SSE2) using PT_{GET,SET}XMMREGS (in the machdep
  ptrace request space).
* Use __HAVE_PROCFS_MACHDEP to export x86 XMM registers via
  /proc/N/xmmregs in procfs.
 2001-12-05 00:58:05 +00:00
christos
420771d7cc PR/14781: Matthew Fredette: Clamp the number of read-ahead pages to 16 because 
other code has this limit. Also while I am here, convert the magic 16 into
a #define constant and use it in the appropriate places. This is a temporary
fix, since all this read-ahead business is XXXUBC anyway.
 2001-11-30 15:18:39 +00:00
lukem
2565646230 don't need <sys/types.h> when including <sys/param.h> 2001-11-15 09:47:59 +00:00
lukem
e4b00f433c add RCSIDs 2001-11-10 13:33:40 +00:00
enami
7b7e3f6b7e Wrap long line and remove name of argument from function prototype. 2001-11-07 04:56:09 +00:00
enami
8e5afc2cbe Make the size of null node hash table to desiredvnodes instead of 16. 2001-11-07 04:55:26 +00:00
enami
888e968e4d Call hashdone where appropriate. 2001-11-07 04:21:26 +00:00
enami
579ece8405 Cosmetic changes. 2001-11-07 04:15:41 +00:00
enami
9af6d646c2 Fix typo in comment. 2001-11-07 04:04:10 +00:00
simonb
cf63a6b052 Remove some variables that are set but never used. 2001-11-06 07:20:37 +00:00
simonb
86c9e7e6d2 In procfs_domem() the addr variable is only needed if PMAP_NEED_PROCWR is 
defined.
 2001-11-06 07:20:08 +00:00
enami
6e46b6ec2c s/genfs_do_putpages/genfs_gop_write/ in uvmhist. 2001-10-03 14:13:08 +00:00
chs
f0b6149f57 change spec_{read,write}() to specify the device blkno in units of DEV_BSIZE 
rather than the device's sector size.  this allows /dev/rcd0a and /dev/cd0a
to return the same data.  fixes PRs 3261 and 14026.
 2001-09-23 04:39:25 +00:00