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Author SHA1 Message Date
Alexey Dobriyan a99bbaf5ee headers: remove sched.h from poll.h 
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2009-10-04 15:05:10 -07:00
Linus Torvalds 58e57fbd1c Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (41 commits)
  Revert "Seperate read and write statistics of in_flight requests"
  cfq-iosched: don't delay async queue if it hasn't dispatched at all
  block: Topology ioctls
  cfq-iosched: use assigned slice sync value, not default
  cfq-iosched: rename 'desktop' sysfs entry to 'low_latency'
  cfq-iosched: implement slower async initiate and queue ramp up
  cfq-iosched: delay async IO dispatch, if sync IO was just done
  cfq-iosched: add a knob for desktop interactiveness
  Add a tracepoint for block request remapping
  block: allow large discard requests
  block: use normal I/O path for discard requests
  swapfile: avoid NULL pointer dereference in swapon when s_bdev is NULL
  fs/bio.c: move EXPORT* macros to line after function
  Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs
  cciss: fix build when !PROC_FS
  block: Do not clamp max_hw_sectors for stacking devices
  block: Set max_sectors correctly for stacking devices
  cciss: cciss_host_attr_groups should be const
  cciss: Dynamically allocate the drive_info_struct for each logical drive.
  cciss: Add usage_count attribute to each logical drive in /sys
  ...
 2009-10-04 12:39:14 -07:00
Jens Axboe 0f78ab9899 Revert "Seperate read and write statistics of in_flight requests" 
This reverts commit a9327cac44.

Corrado Zoccolo <czoccolo@gmail.com> reports:

"with 2.6.32-rc1 I started getting the following strange output from
"iostat -kx 2":
Linux 2.6.31bisect (et2) 	04/10/2009 	_i686_	(2 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          10,70    0,00    3,16   15,75    0,00   70,38

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util
sda              18,22     0,00    0,67    0,01    14,77     0,02
43,94     0,01   10,53 39043915,03 2629219,87
sdb              60,89     9,68   50,79    3,04  1724,43    50,52
65,95     0,70   13,06 488437,47 2629219,87

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           2,72    0,00    0,74    0,00    0,00   96,53

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util
sda               0,00     0,00    0,00    0,00     0,00     0,00
0,00     0,00    0,00   0,00 100,00
sdb               0,00     0,00    0,00    0,00     0,00     0,00
0,00     0,00    0,00   0,00 100,00

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           6,68    0,00    0,99    0,00    0,00   92,33

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util
sda               0,00     0,00    0,00    0,00     0,00     0,00
0,00     0,00    0,00   0,00 100,00
sdb               0,00     0,00    0,00    0,00     0,00     0,00
0,00     0,00    0,00   0,00 100,00

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           4,40    0,00    0,73    1,47    0,00   93,40

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util
sda               0,00     0,00    0,00    0,00     0,00     0,00
0,00     0,00    0,00   0,00 100,00
sdb               0,00     4,00    0,00    3,00     0,00    28,00
18,67     0,06   19,50 333,33 100,00

Global values for service time and utilization are garbage. For
interval values, utilization is always 100%, and service time is
higher than normal.

I bisected it down to:
[a9327cac44] Seperate read and write
statistics of in_flight requests
and verified that reverting just that commit indeed solves the issue
on 2.6.32-rc1."

So until this is debugged, revert the bad commit.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2009-10-04 21:04:38 +02:00
Linus Torvalds 9117703fab Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  [PATCH] ext4: retry failed direct IO allocations
  ext4: Fix build warning in ext4_dirty_inode()
  ext4: drop ext4dev compat
  ext4: fix a BUG_ON crash by checking that page has buffers attached to it
 2009-10-03 11:24:19 -07:00
Eric Sandeen fbbf694566 [PATCH] ext4: retry failed direct IO allocations 
On a 256M filesystem, doing this in a loop:

        xfs_io -F -f -d -c 'pwrite 0 64m' test
        rm -f test

eventually leads to ENOSPC.  (the xfs_io command does a
64m direct IO write to the file "test")

As with other block allocation callers, it looks like we need to
potentially retry the allocations on the initial ENOSPC.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-10-02 21:20:55 -04:00
Curt Wohlgemuth 74072d0a63 ext4: Fix build warning in ext4_dirty_inode() 
This fixes the following warning:

fs/ext4/inode.c: In function 'ext4_dirty_inode':
fs/ext4/inode.c:5615: warning: unused variable 'current_handle'

We remove the jbd_debug() statement which does use current_handle, as
it's not terribly important in the grand scheme of things.

Thanks to Stephen Rothwell for pointing this out.

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-10-02 21:08:32 -04:00
Linus Torvalds 0efe5e32c8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: fix data space leak fix
  Btrfs: remove duplicates of filemap_ helpers
  Btrfs: take i_mutex before generic_write_checks
  Btrfs: fix arguments to btrfs_wait_on_page_writeback_range
  Btrfs: fix deadlock with free space handling and user transactions
  Btrfs: fix error cases for ioctl transactions
  Btrfs: Use CONFIG_BTRFS_POSIX_ACL to enable ACL code
  Btrfs: introduce missing kfree
  Btrfs: Fix setting umask when POSIX ACLs are not enabled
  Btrfs: proper -ENOSPC handling
 2009-10-01 20:23:15 -07:00
Christoph Hellwig 80e50be422 afs: remove cache.h 
It's just a wrapper for <linux/fscache.h>, so remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2009-10-01 16:11:16 -07:00
Alexey Dobriyan 828c09509b const: constify remaining file_operations 
[akpm@linux-foundation.org: fix KVM]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2009-10-01 16:11:11 -07:00
Chris Mason 9c2693c924 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable into for-linus 2009-10-01 17:24:44 -04:00
Josef Bacik fbf1908744 Btrfs: fix data space leak fix 
There is a problem where page_mkwrite can be called on a dirtied page that
already has a delalloc range associated with it.  The fix is to clear any
delalloc bits for the range we are dirtying so the space accounting gets
handled properly.  This is the same thing we do in the normal write case, so we
are consistent across the board.  With this patch we no longer leak reserved
space.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2009-10-01 17:10:23 -04:00
H Hartley Sweeten a112a71d45 fs/bio.c: move EXPORT* macros to line after function 
As mentioned in Documentation/CodingStyle, move EXPORT* macro's
to the line immediately after the closing function brace line.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2009-10-01 21:15:46 +02:00
Christoph Hellwig 8aa38c31b7 Btrfs: remove duplicates of filemap_ helpers 
Use filemap_fdatawrite_range and filemap_fdatawait_range instead of
local copies of the functions.  For filemap_fdatawait_range that
also means replacing the awkward old wait_on_page_writeback_range
calling convention with the regular filemap byte offsets.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2009-10-01 12:58:30 -04:00
Chris Mason 25472b880c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable into for-linus 2009-10-01 12:58:13 -04:00
Chris Mason ab93dbecfb Btrfs: take i_mutex before generic_write_checks 
btrfs_file_write was incorrectly calling generic_write_checks without
taking i_mutex.  This lead to problems with racing around i_size when
doing O_APPEND writes.

The fix here is to move i_mutex higher.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2009-10-01 12:29:10 -04:00
Christoph Hellwig 35d62a942d Btrfs: fix arguments to btrfs_wait_on_page_writeback_range 
wait_on_page_writeback_range/btrfs_wait_on_page_writeback_range takes
a pagecache offset, not a byte offset into the file.  Shift the arguments
around to wait for the correct range

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2009-10-01 10:27:01 -04:00
Eric Sandeen f0e2dfa7f3 ext4: drop ext4dev compat 
Kconfig & super.c promised it'd be gone by 2.6.31, so it's
about time to drop it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-10-01 02:21:07 -04:00
Theodore Ts'o 1f94533d9c ext4: fix a BUG_ON crash by checking that page has buffers attached to it 
In ext4_num_dirty_pages() we were calling page_buffers() before
checking to see if the page actually had pages attached to it; this
would cause a BUG check crash in the inline function page_buffers().

Thanks to Markus Trippelsdorf for reporting this bug.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-09-30 22:57:41 -04:00
Linus Torvalds 9abf47f11b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix missing initialization of i_dir_start_lookup member
  nilfs2: fix missing zero-fill initialization of btree node cache
 2009-09-30 09:42:24 -07:00
Linus Torvalds 9f44fdc518 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Fix time encoding with extra epoch bits
  ext4: Add a stub for mpage_da_data in the trace header
  jbd2: Use tracepoints for history file
  ext4: Use tracepoints for mb_history trace file
  ext4, jbd2: Drop unneeded printks at mount and unmount time
  ext4: Handle nested ext4_journal_start/stop calls without a journal
  ext4: Make sure ext4_dirty_inode() updates the inode in no journal mode
  ext4: Avoid updating the inode table bh twice in no journal mode
  ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first
  ext4: async direct IO for holes and fallocate support
  ext4: Use end_io callback to avoid direct I/O fallback to buffered I/O
  ext4: Split uninitialized extents for direct I/O
  ext4: release reserved quota when block reservation for delalloc retry
  ext4: Adjust ext4_da_writepages() to write out larger contiguous chunks
  ext4: Fix hueristic which avoids group preallocation for closed files
  ext4: Use ext4_msg() for ext4_da_writepage() errors
  ext4: Update documentation about quota mount options
 2009-09-30 09:32:30 -07:00
Linus Torvalds 4c8f1cb266 Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6 
* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: Check s_dirt in fat_sync_fs()
  vfat: change the default from shortname=lower to shortname=mixed
  fat/nls: Fix handling of utf8 invalid char
 2009-09-30 09:31:14 -07:00
Theodore Ts'o c1fccc0696 ext4: Fix time encoding with extra epoch bits 
"Looking at ext4.h, I think the setting of extra time fields forgets to
mask the epoch bits so the epoch part overwrites nsec part. The second
change is only for coherency (2 -> EXT4_EPOCH_BITS)."

Thanks to Damien Guibouret for pointing out this problem.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-09-30 01:13:55 -04:00
Theodore Ts'o bf6993276f jbd2: Use tracepoints for history file 
The /proc/fs/jbd2/<dev>/history was maintained manually; by using
tracepoints, we can get all of the existing functionality of the /proc
file plus extra capabilities thanks to the ftrace infrastructure.  We
save memory as a bonus.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-09-30 00:32:06 -04:00
Theodore Ts'o 296c355cd6 ext4: Use tracepoints for mb_history trace file 
The /proc/fs/ext4/<dev>/mb_history was maintained manually, and had a
number of problems: it required a largish amount of memory to be
allocated for each ext4 filesystem, and the s_mb_history_lock
introduced a CPU contention problem.  

By ripping out the mb_history code and replacing it with ftrace
tracepoints, and we get more functionality: timestamps, event
filtering, the ability to correlate mballoc history with other ext4
tracepoints, etc.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
 2009-09-30 00:32:42 -04:00
Sage Weil dd7e0b7b02 Btrfs: fix deadlock with free space handling and user transactions 
If an ioctl-initiated transaction is open, we can't force a commit during
the free space checks in order to free up pinned extents or else we
deadlock.  Just ENOSPC instead.

A more satisfying solution that reserves space for the entire user
transaction up front is forthcoming...

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2009-09-29 19:50:07 -04:00