Commit graph

767 commits

Author SHA1 Message Date
David Chinner
72772a3b5b [XFS] fix inode leak in xfs_iget_core()
If the radix_tree_preload() fails, we need to destroy the inode we just
read in before trying again. This could leak xfs_vnode structures when
there is memory pressure. Noticed by Christoph Hellwig.

SGI-PV: 977823
SGI-Modid: xfs-linux-melb:xfs-kern:30606a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-03-06 16:38:50 +11:00
David Chinner
92d9cd1059 [XFS] 977545 977545 977545 977545 977545 977545 xfsaild causing too many
wakeups

Idle state is not being detected properly by the xfsaild push code. The
current idle state is detected by an empty list which may never happen
with mostly idle filesystem or one using lazy superblock counters. A
single dirty item in the list that exists beyond the push target can
result repeated looping attempting to push up to the target because it
fails to check if the push target has been acheived or not.

Fix by considering a dirty list with everything past the target as an idle
state and set the timeout appropriately.

SGI-PV: 977545
SGI-Modid: xfs-linux-melb:xfs-kern:30532a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-03-06 16:38:17 +11:00
Josef Jeff Sipek
1bd960ee2b [XFS] If you mount an XFS filesystem with no mount options at all, then
the "ikeep" option is set rather than "noikeep".

This regression was introduced in 970451.

With no mount options specified, xfs_parseargs() does the following:

int ikeep = 0;

args->flags |= XFSMNT_BARRIER;

args->flags2 |= XFSMNT2_COMPAT_IOSIZE;

if (!options)

goto done;

It only sets the above two options by default and before, it also used to
set XFSMNT_IDELETE by default.

If options are specified, then

if (!(args->flags & XFSMNT_DMAPI) && !ikeep)

args->flags |= XFSMNT_IDELETE;

is executed later on which is skipped by the "goto done;" above.

The solution is to invert the logic.

SGI-PV: 977771
SGI-Modid: xfs-linux-melb:xfs-kern:30590a

Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-28 20:37:56 -08:00
Lachlan McIlroy
ef8ece55d9 [XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac
platform.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30559a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-26 17:05:44 +11:00
Lachlan McIlroy
db69c915e6 [XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac
platform.

SGI-PV: 974005
SGI-Modid: xfs-linux-melb:xfs-kern:30558a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-26 17:05:37 +11:00
Lachlan McIlroy
6e5e93424d Remove empty file fs/xfs/Makefile-linux-2.6. 2008-02-22 15:39:10 +11:00
Lachlan McIlroy
c58310bf49 Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus 2008-02-18 13:51:42 +11:00
Lachlan McIlroy
269cdfaf76 [XFS] Added quota targets and removed dmapi directory
Fixes build failures introduced by bad merge to mainline.
2008-02-18 13:06:17 +11:00
Eric Sandeen
794f744b22 [XFS] Fix up xfs out-of-tree builds. (a.k.a. external modules)
Change -I include directives to find headers in the out-of-tree spot. This
allows a directory containing only xfs files to be built as:

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29878a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-18 12:59:11 +11:00
Andi Kleen
58b7983d15 [XFS] Remove Makefile wrappers in XFS
Makefile (and Kbuild) would include Makefile-linux-26 I doubt XFS will
really still compile on 2.4; so drop that. This moves Makefile-linux-26
into Makefile and drops Kbuild. Also having wrappers as both Kbuild and
Makefile seemed redundant anyways.

The patch is relatively large because it renames a file, but no functional
changes.

SGI-PV: 971050
SGI-Modid: xfs-linux-melb:xfs-kern:29781a

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-18 12:48:03 +11:00
Jan Blunck
1d957f9bf8 Introduce path_put()
* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Jan Blunck
4ac9137858 Embed a struct path into struct nameidata instead of nd->{dentry,mnt}
This is the central patch of a cleanup series. In most cases there is no good
reason why someone would want to use a dentry for itself. This series reflects
that fact and embeds a struct path into nameidata.

Together with the other patches of this series
- it enforced the correct order of getting/releasing the reference count on
  <dentry,vfsmount> pairs
- it prepares the VFS for stacking support since it is essential to have a
  struct path in every place where the stack can be traversed
- it reduces the overall code size:

without patch series:
   text    data     bss     dec     hex filename
5321639  858418  715768 6895825  6938d1 vmlinux

with patch series:
   text    data     bss     dec     hex filename
5320026  858418  715768 6894212  693284 vmlinux

This patch:

Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix cifs]
[akpm@linux-foundation.org: fix smack]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Marcin Slusarz
413d57c990 xfs: convert beX_add to beX_add_cpu (new common API)
remove beX_add functions and replace all uses with beX_add_cpu

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Reviewed-by: Dave Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-13 16:21:19 -08:00
Linus Torvalds
0b61a2ba5d Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: (62 commits)
  [XFS] add __init/__exit mark to specific init/cleanup functions
  [XFS] Fix oops in xfs_file_readdir()
  [XFS] kill xfs_root
  [XFS] keep i_nlink updated and use proper accessors
  [XFS] stop updating inode->i_blocks
  [XFS] Make xfs_ail_check check less by default
  [XFS] Move AIL pushing into it's own thread
  [XFS] use generic_permission
  [XFS] stop re-checking permissions in xfs_swapext
  [XFS] clean up xfs_swapext
  [XFS] remove permission check from xfs_change_file_space
  [XFS] prevent panic during log recovery due to bogus op_hdr length
  [XFS] Cleanup various fid related bits:
  [XFS] Fix xfs_lowbit64
  [XFS] Remove CFORK macros and use code directly in IFORK and DFORK macros.
  [XFS] kill superflous buffer locking (2nd attempt)
  [XFS] Use kernel-supplied "roundup_pow_of_two" for simplicity
  [XFS] Remove the BPCSHIFT and NB* based macros from XFS.
  [XFS] Remove bogus assert
  [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config
  ...
2008-02-07 19:12:12 -08:00
Lachlan McIlroy
de2eeea609 [XFS] add __init/__exit mark to specific init/cleanup functions
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30459a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Denis Cheng <crquan@gmail.com>
2008-02-07 18:25:19 +11:00
David Chinner
450790a2c5 [XFS] Fix oops in xfs_file_readdir()
When xfs_file_readdir() exactly fills a buffer, it can move it's index
past the end of the buffer and dereference it even though the result of
the dereference is never used. On some platforms this causes an oops.

SGI-PV: 976923
SGI-Modid: xfs-linux-melb:xfs-kern:30458a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:24:13 +11:00
Christoph Hellwig
cbc89dcfd2 [XFS] kill xfs_root
The only caller (xfs_fs_fill_super) can simplify call igrab on the root
inode.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30393a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:24:00 +11:00
Christoph Hellwig
4188c78d95 [XFS] keep i_nlink updated and use proper accessors
To get the read-only bind mounts in -mm to work correctly with XFS we need
to call the drop_nlink and inc_nlink helpers to monitor the link count.
Add calls to these to xfs_bumplink and xfs_droplink and stop copying over
di_nlink to i_nlink in xfs_validate_fields and vn_revalidate.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30392a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:23:38 +11:00
Christoph Hellwig
222096ae7f [XFS] stop updating inode->i_blocks
The VFS doesn't use i_blocks, it's only used by generic_fillattr and the
generic quota code which XFS doesn't use. In XFS there is one use to check
whether we have an inline or out of line sumlink, but we can replace that
with a check of the XFS_IFINLINE inode flag.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30391a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:23:15 +11:00
David Chinner
de08dbc197 [XFS] Make xfs_ail_check check less by default
Checking the entire AIL on every insert and remove is prohibitively
expensive - the sustained sequntial create rate on a single disk drops
from about 1800/s to 60/s because of this checking resulting in the
xfslogd becoming cpu bound.

By default on debug builds, only check the next and previous entries in
the list to ensure they are ordered correctly. If you really want, define
XFS_TRANS_DEBUG to use the old behaviour.

SGI-PV: 972759
SGI-Modid: xfs-linux-melb:xfs-kern:30372a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:23:05 +11:00
David Chinner
249a8c1124 [XFS] Move AIL pushing into it's own thread
When many hundreds to thousands of threads all try to do simultaneous
transactions and the log is in a tail-pushing situation (i.e. full), we
can get multiple threads walking the AIL list and contending on the AIL
lock.

The AIL push is, in effect, a simple I/O dispatch algorithm complicated by
the ordering constraints placed on it by the transaction subsystem. It
really does not need multiple threads to push on it - even when only a
single CPU is pushing the AIL, it can push the I/O out far faster that
pretty much any disk subsystem can handle.

So, to avoid contention problems stemming from multiple list walkers, move
the list walk off into another thread and simply provide a "target" to
push to. When a thread requires a push, it sets the target and wakes the
push thread, then goes to sleep waiting for the required amount of space
to become available in the log.

This mechanism should also be a lot fairer under heavy load as the waiters
will queue in arrival order, rather than queuing in "who completed a push
first" order.

Also, by moving the pushing to a separate thread we can do more
effectively overload detection and prevention as we can keep context from
loop iteration to loop iteration. That is, we can push only part of the
list each loop and not have to loop back to the start of the list every
time we run. This should also help by reducing the number of items we try
to lock and/or push items that we cannot move.

Note that this patch is not intended to solve the inefficiencies in the
AIL structure and the associated issues with extremely large list
contents. That needs to be addresses separately; parallel access would
cause problems to any new structure as well, so I'm only aiming to isolate
the structure from unbounded parallelism here.

SGI-PV: 972759
SGI-Modid: xfs-linux-melb:xfs-kern:30371a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:22:51 +11:00
Christoph Hellwig
4576758db5 [XFS] use generic_permission
Now that all direct caller of xfs_iaccess are gone we can kill xfs_iaccess
and xfs_access and just use generic_permission with a check_acl callback.
This is required for the per-mount read-only patchset in -mm to work
properly with XFS.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30370a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:22:38 +11:00
Christoph Hellwig
f6aa7f2184 [XFS] stop re-checking permissions in xfs_swapext
xfs_swapext should simplify check if we have a writeable file descriptor
instead of re-checking the permissions using xfs_iaccess. Add an
additional check to refuse O_APPEND file descriptors because swapext is
not an append-only write operation.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30369a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:22:24 +11:00
Christoph Hellwig
35fec8df65 [XFS] clean up xfs_swapext
- stop using vnodes
- use proper multiple label goto unwinding
- give the struct file * variables saner names

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30366a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:22:02 +11:00
Christoph Hellwig
199037c598 [XFS] remove permission check from xfs_change_file_space
Both callers of xfs_change_file_space alreaedy do the file->f_mode &
FMODE_WRITE check to ensure we have a file descriptor that has been opened
for write mode, so there is no need to re-check that with xfs_iaccess.
Especially as the later might wrongly deny it for corner cases like file
descriptor passing through unix domain sockets.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30365a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:21:14 +11:00
Lachlan McIlroy
9742bb93da [XFS] prevent panic during log recovery due to bogus op_hdr length
A problem was reported where a system panicked in log recovery due to a
corrupt log record. The cause of the corruption is not known but this
change will at least prevent a crash for this specific scenario. Log
recovery definitely needs some more work in this area.

SGI-PV: 974151
SGI-Modid: xfs-linux-melb:xfs-kern:30318a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-02-07 18:20:58 +11:00
Christoph Hellwig
f71354bc3a [XFS] Cleanup various fid related bits:
- merge xfs_fid2 into it's only caller xfs_dm_inode_to_fh.
- remove xfs_vget and opencode it in the two callers, simplifying
  both of them by avoiding the awkward calling convetion.
- assign directly to the dm_fid_t members in various places in the
  dmapi code instead of casting them to xfs_fid_t first (which
  is identical to dm_fid_t)

SGI-PV: 974747
SGI-Modid: xfs-linux-melb:xfs-kern:30258a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:20:11 +11:00
David Chinner
edd319dc52 [XFS] Fix xfs_lowbit64
xfs_lowbit64 was broken on 32 bit platforms in a recent cleanup of the xfs
bitops. Fix it back up again.

SGI-PV: 974005
SGI-Modid: xfs-linux-melb:xfs-kern:30202a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:19:41 +11:00
Christoph Hellwig
45ba598e56 [XFS] Remove CFORK macros and use code directly in IFORK and DFORK macros.
Currently XFS_IFORK_* and XFS_DFORK* are implemented by means of
XFS_CFORK* macros. But given that XFS_IFORK_* operates on an xfs_inode
that embedds and xfs_icdinode_core and XFS_DFORK_* operates on an
xfs_dinode that embedds a xfs_dinode_core one will have to do endian
swapping while the other doesn't. Instead of having the current mess with
the CFORK macros that have byteswapping and non-byteswapping version
(which are inconsistantly named while we're at it) just define each family
of the macros to stand by itself and simplify the whole matter.

A few direct references to the CFORK variants were cleaned up to use IFORK
or DFORK to make this possible.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30163a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:19:24 +11:00
Christoph Hellwig
a9759f2de3 [XFS] kill superflous buffer locking (2nd attempt)
There is no need to lock any page in xfs_buf.c because we operate on our
own address_space and all locking is covered by the buffer semaphore. If
we ever switch back to main blockdeive address_space as suggested e.g. for
fsblock with a similar scheme the locking will have to be totally revised
anyway because the current scheme is neither correct nor coherent with
itself.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30156a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:18:50 +11:00
Robert P. J. Day
40ebd81d1a [XFS] Use kernel-supplied "roundup_pow_of_two" for simplicity
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30098a

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:18:19 +11:00
Tim Shimmin
e6a4b37f38 [XFS] Remove the BPCSHIFT and NB* based macros from XFS.
The BPCSHIFT based macros, btoc*, ctob*, offtoc* and ctooff are either not
used or don't need to be used. The NDPP, NDPP, NBBY macros don't need to
be used but instead are replaced directly by PAGE_SIZE and PAGE_CACHE_SIZE
where appropriate. Initial patch and motivation from Nicolas Kaiser.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30096a

Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:17:58 +11:00
Niv Sardi
f7b7c3673e [XFS] Remove bogus assert
This assert is bogus. We can have a forced shutdown occur
between the check for the XLOG_FORCED_SHUTDOWN and the ASSERT. Also, the
logging system shouldn't care about the state of XFS_FORCED_SHUTDOWN, it
should only check XLOG_FORCED_SHUTDOWN. The logging system has it's own
forced shutdown flag so, for the case of a forced shutdown that's not due
to a logging error, we can flush the log.

SGI-PV: 972985
SGI-Modid: xfs-linux-melb:xfs-kern:30029a

Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:17:39 +11:00
Eric Sandeen
71ddabb94a [XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config
Use XFS_IS_REALTIME_INODE in more places, and #define it to 0 if
CONFIG_XFS_RT is off. This should be safe because mount checks in
xfs_rtmount_init:

so if we get mounted w/o CONFIG_XFS_RT, no realtime inodes should be
encountered after that.

Defining XFS_IS_REALTIME_INODE to 0 saves a bit of stack space,
presumeably gcc can optimize around the various "if (0)" type checks:

xfs_alloc_file_space -8 xfs_bmap_adjacent -16 xfs_bmapi -8
xfs_bmap_rtalloc -16 xfs_bunmapi -28 xfs_free_file_space -64 xfs_imap +8
<-- ? hmm. xfs_iomap_write_direct -12 xfs_qm_dqusage_adjust -4
xfs_qm_vop_chown_reserve -4

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30014a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:16:43 +11:00
David Chinner
a67d7c5f5d [XFS] Move platform specific mount option parse out of core XFS code
Mount option parsing is platform specific. Move it out of core code into
the platform specific superblock operation file.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30012a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:16:30 +11:00
David Chinner
3ed6526441 [XFS] Implement fallocate.
Implement the new generic callout for file preallocation. Atomically
change the file size if requested.

SGI-PV: 972756
SGI-Modid: xfs-linux-melb:xfs-kern:30009a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:16:17 +11:00
David Chinner
5d51eff453 [XFS] Fix inode allocation latency
The log force added in xfs_iget_core() has been a performance issue since
it was introduced for tight loops that allocate then unlink a single file.
under heavy writeback, this can introduce unnecessary latency due tothe
log I/o getting stuck behind bulk data writes.

Fix this latency problem by avoinding the need for the log force by moving
the place we mark linux inode dirty to the transaction commit rather than
on transaction completion.

This also closes a potential hole in the sync code where a linux inode is
not dirty between the time it is modified and the time the log buffer has
been written to disk.

SGI-PV: 972753
SGI-Modid: xfs-linux-melb:xfs-kern:30007a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:16:07 +11:00
David Chinner
e4143a1cf5 [XFS] Fix transaction overrun during writeback.
Prevent transaction overrun in xfs_iomap_write_allocate() if we race with
a truncate that overlaps the delalloc range we were planning to allocate.

If we race, we may allocate into a hole and that requires block
allocation. At this point in time we don't have a reservation for block
allocation (apart from metadata blocks) and so allocating into a hole
rather than a delalloc region results in overflowing the transaction block
reservation.

Fix it by only allowing a single extent to be allocated at a time.

SGI-PV: 972757
SGI-Modid: xfs-linux-melb:xfs-kern:30005a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:15:55 +11:00
David Chinner
786f486f81 [XFS] Show all mount args in /proc/mounts
There are several mount options that don't show up in /proc/mounts. Add
them in and clean up the showargs code at the same time.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30004a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:15:43 +11:00
David Chinner
8ae2c0f64a [XFS] Fix sparse warning in xlog_recover_do_efd_trans.
Sparse trips over the locking order in xlog_recover_do_efd_trans() when
xfs_trans_delete_ail() drops the ail lock. Because the unlock is
conditional, we need to either annotate with a "fake unlock" or change the
structure of the code so sparse thinks the function always unlocks.

Reordering the code makes it simpler, so do that.

SGI-PV: 972755
SGI-Modid: xfs-linux-melb:xfs-kern:30003a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:15:29 +11:00
David Chinner
a8272ce0c1 [XFS] Fix up sparse warnings.
These are mostly locking annotations, marking things static, casts where
needed and declaring stuff in header files.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30002a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:14:38 +11:00
David Chinner
a69b176df2 [XFS] Use the generic bitops rather than implementing them ourselves.
Patch inspired by Andi Kleen.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30000a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:14:22 +11:00
Vlad Apostolov
c319b58b13 [XFS] Make xfs_bulkstat() to report unlinked but referenced inodes
We need xfs_bulkstat() to report inode stat for inodes with link count
zero but reference count non zero.

The fix here:

http://oss.sgi.com/archives/xfs/2007-09/msg00266.html

changed this behavior and made xfs_bulkstat() to filter all unlinked
inodes including those that are not destroyed yet but held by reference.

The attached patch returns back to the original behavior by marking the
on-disk inode buffer "dirty" when di_mode is cleared (at that time both
inode link and reference counter are zero).

SGI-PV: 972004
SGI-Modid: xfs-linux-melb:xfs-kern:29914a

Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:13:37 +11:00
Lachlan McIlroy
98ce2b5b1b [XFS] 971186 Undo mod xfs-linux-melb:xfs-kern:29845a due to a regression
SGI-PV: 971596
SGI-Modid: xfs-linux-melb:xfs-kern:29902a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07 18:13:27 +11:00
Eric Sandeen
bc58f9bb6b [XFS] fix 32-bit compat ioctls for GETXFLAGS, SETXFLAGS, GETVERSION
XFS_IOC_GETVERSION, XFS_IOC_GETXFLAGS and XFS_IOC_SETXFLAGS all take a
"long" which changes size between 32 and 64 bit platforms.

So, the ioctl cmds that come in from a 32-bit app aren't as expected, for
example on GETXFLAGS,

unknown cmd fd(3) cmd(80046601){t:'f';sz:4}

due to the size mismatch.

So, use instead the 32-bit version of the commands for compat ioctls, and
other than that it doesn't take any more manipulation.

Also, for both native and compat versions, just define them to the values
as defined in fs.h

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29849a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:13:17 +11:00
Eric Sandeen
d4f3cc016f [XFS] lose xfs_hex_dump in favor of print_hex_dump
No need for xfs to have its own hex dumping routine now that the kernel
has one.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29847a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:13:05 +11:00
Christoph Hellwig
91906a882a [XFS] kill XFS_INOBT_IS_FREE_DISK
This macro is unused an all other acros in this family operate on native
types, so we most likely won't grow a user either.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29846a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:12:41 +11:00
Christoph Hellwig
c40ea74101 [XFS] kill superflous buffer locking
There is no need to lock any page in xfs_buf.c because we operate on our
own address_space and all locking is covered by the buffer semaphore. If
we ever switch back to main blockdeive address_space as suggested e.g. for
fsblock with a similar scheme the locking will have to be totally revised
anyway because the current scheme is neither correct nor coherent with
itself.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29845a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:12:07 +11:00
Eric Sandeen
0771fb4515 [XFS] Refactor xfs_mountfs
Refactoring xfs_mountfs() to call sub-functions for logical chunks can
help save a bit of stack, and can make it easier to read this long
function.

The mount path is one of the longest common callchains, easily getting to
within a few bytes of the end of a 4k stack when over lvm, quotas are
enabled, and quotacheck must be done.

With this change on top of the other stack-related changes I've sent, I
can get xfs to survive a normal xfsqa run on 4k stacks over lvm.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29834a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:11:56 +11:00
Christoph Hellwig
b53e675dc8 [XFS] xlog_rec_header/xlog_rec_ext_header endianess annotations
Mostly trivial conversion with one exceptions: h_num_logops was kept in
native endian previously and only converted to big endian in xlog_sync,
but we always keep it big endian now. With todays cpus fast byteswap
instructions that's not an issue but the new variant keeps the code clean
and maintainable.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29821a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07 18:11:47 +11:00