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  1. 11 Dec, 2009 23 commits
  3. 10 Dec, 2009 17 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq · d71cb81a
      Linus Torvalds authored 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Add debugobjects support
      d71cb81a
    • Linus Torvalds's avatar
      Merge branch 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen · ab1831b0
      Linus Torvalds authored 
      * 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen: try harder to balloon up under memory pressure.
  Xen balloon: fix totalram_pages counting.
  xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region.
  xen: improve error handling in do_suspend.
  xen: don't leak IRQs over suspend/resume.
  xen: call clock resume notifier on all CPUs
  xen: use iret for return from 64b kernel to 32b usermode
  xen: don't call dpm_resume_noirq() with interrupts disabled.
  xen: register runstate info for boot CPU early
  xen: register runstate on secondary CPUs
  xen: register timer interrupt with IRQF_TIMER
  xen: correctly restore pfn_to_mfn_list_list after resume
  xen: restore runstate_info even if !have_vcpu_info_placement
  xen: re-register runstate area earlier on resume.
  xen: wait up to 5 minutes for device connetion
  xen: improvement to wait_for_devices()
  xen: fix is_disconnected_device/exists_disconnected_device
  xen/xenbus: make DEVICE_ATTR()s static
      ab1831b0
    • Linus Torvalds's avatar
      Merge branch 'xen/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen · eae6fa9b
      Linus Torvalds authored 
      * 'xen/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen pvfb: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
  fb-defio: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
  fb-defio: If FBINFO_VIRTFB is defined, do not set VM_IO flag.
  Fix toogle whether xenbus driver should be built as module or part of kernel.
      eae6fa9b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm · 02412f49
      Linus Torvalds authored 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: always use GFP_NOFS
      02412f49
    • Linus Torvalds's avatar
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · 4515c306
      Linus Torvalds authored 
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits)
  ext4: Fix potential fiemap deadlock (mmap_sem vs. i_data_sem)
  ext4: Do not override ext2 or ext3 if built they are built as modules
  jbd2: Export jbd2_log_start_commit to fix ext4 build
  ext4: Fix insufficient checks in EXT4_IOC_MOVE_EXT
  ext4: Wait for proper transaction commit on fsync
  ext4: fix incorrect block reservation on quota transfer.
  ext4: quota macros cleanup
  ext4: ext4_get_reserved_space() must return bytes instead of blocks
  ext4: remove blocks from inode prealloc list on failure
  ext4: wait for log to commit when umounting
  ext4: Avoid data / filesystem corruption when write fails to copy data
  ext4: Use ext4 file system driver for ext2/ext3 file system mounts
  ext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks()
  jbd2: Add ENOMEM checking in and for jbd2_journal_write_metadata_buffer()
  ext4: remove unused parameter wbc from __ext4_journalled_writepage()
  ext4: remove encountered_congestion trace
  ext4: move_extent_per_page() cleanup
  ext4: initialize moved_len before calling ext4_move_extents()
  ext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT
  ext4: use ext4_data_block_valid() in ext4_free_blocks()
  ...
      4515c306
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd · a5eba3f6
      Linus Torvalds authored 
      * 'for-linus' of git://git.open-osd.org/linux-open-osd:
  exofs: Multi-device mirror support
  exofs: Move all operations to an io_engine
  exofs: move osd.c to ios.c
  exofs: statfs blocks is sectors not FS blocks
  exofs: Prints on mount and unmout
  exofs: refactor exofs_i_info initialization into common helper
  exofs: dbg-print less
  exofs: More sane debug print
  trivial: some small fixes in exofs documentation
      a5eba3f6
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/ubifs-2.6 · fc1495bf
      Linus Torvalds authored 
      * git://git.infradead.org/ubifs-2.6:
  UBIFS: fix return code in check_leaf
  UBI: flush wl before clearing update marker
  MAINTAINERS: change e-mail of Artem Bityutskiy
  UBIFS: remove manual O_SYNC handling
  UBIFS: support mounting of UBI volume character devices
  UBI: Add ubi_open_volume_path
      fc1495bf
    • David Wong's avatar
      V4L/DVB (13592): max2165: 32bit build patch · 5476ffd2
      David Wong authored 
      This patch drops usage of floating point variable for 32bit build
Signed-off-by: default avatarDavid T. L. Wong <davidtlwong@gmail.com>
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
      5476ffd2
    • Boaz Harrosh's avatar
      exofs: Multi-device mirror support · 04dc1e88
      Boaz Harrosh authored 
      This patch changes on-disk format, it is accompanied with a parallel
patch to mkfs.exofs that enables multi-device capabilities.

After this patch, old exofs will refuse to mount a new formatted FS and
new exofs will refuse an old format. This is done by moving the magic
field offset inside the FSCB. A new FSCB *version* field was added. In
the future, exofs will refuse to mount unmatched FSCB version. To
up-grade or down-grade an exofs one must use mkfs.exofs --upgrade option
before mounting.

Introduced, a new object that contains a *device-table*. This object
contains the default *data-map* and a linear array of devices
information, which identifies the devices used in the filesystem. This
object is only written to offline by mkfs.exofs. This is why it is kept
separate from the FSCB, since the later is written to while mounted.

Same partition number, same object number is used on all devices only
the device varies.

* define the new format, then load the device table on mount time make
  sure every thing is supported.

* Change I/O engine to now support Mirror IO, .i.e write same data
  to multiple devices, read from a random device to spread the
  read-load from multiple clients (TODO: stripe read)

Implementation notes:
 A few points introduced in previous patch should be mentioned here:

* Special care was made so absolutlly all operation that have any chance
  of failing are done before any osd-request is executed. This is to
  minimize the need for a data consistency recovery, to only real IO
  errors.

* Each IO state has a kref. It starts at 1, any osd-request executed
  will increment the kref, finally when all are executed the first ref
  is dropped. At IO-done, each request completion decrements the kref,
  the last one to return executes the internal _last_io() routine.
  _last_io() will call the registered io_state_done. On sync mode a
  caller does not supply a done method, indicating a synchronous
  request, the caller is put to sleep and a special io_state_done is
  registered that will awaken the caller. Though also in sync mode all
  operations are executed in parallel.
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      04dc1e88
    • Boaz Harrosh's avatar
      exofs: Move all operations to an io_engine · 06886a5a
      Boaz Harrosh authored 
      In anticipation for multi-device operations, we separate osd operations
into an abstract I/O API. Currently only one device is used but later
when adding more devices, we will drive all devices in parallel according
to a "data_map" that describes how data is arranged on multiple devices.
The file system level operates, like before, as if there is one object
(inode-number) and an i_size. The io engine will split this to the same
object-number but on multiple device.

At first we introduce Mirror (raid 1) layout. But at the final outcome
we intend to fully implement the pNFS-Objects data-map, including
raid 0,4,5,6 over mirrored devices, over multiple device-groups. And
more. See: http://tools.ietf.org/html/draft-ietf-nfsv4-pnfs-obj-12

* Define an io_state based API for accessing osd storage devices
  in an abstract way.
  Usage:
	First a caller allocates an io state with:
		exofs_get_io_state(struct exofs_sb_info *sbi,
				   struct exofs_io_state** ios);

	Then calles one of:
		exofs_sbi_create(struct exofs_io_state *ios);
		exofs_sbi_remove(struct exofs_io_state *ios);
		exofs_sbi_write(struct exofs_io_state *ios);
		exofs_sbi_read(struct exofs_io_state *ios);
		exofs_oi_truncate(struct exofs_i_info *oi, u64 new_len);

	And when done
		exofs_put_io_state(struct exofs_io_state *ios);

* Convert all source files to use this new API
* Convert from bio_alloc to bio_kmalloc
* In io engine we make use of the now fixed osd_req_decode_sense

There are no functional changes or on disk additions after this patch.
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      06886a5a
    • Boaz Harrosh's avatar
      exofs: move osd.c to ios.c · 8ce9bdd1
      Boaz Harrosh authored 
      If I do a "git mv" together with a massive code change
and commit in one patch, git looses the rename and
records a delete/new instead. This is bad because I want
a rename recorded so later rebased/cherry-picked patches
to the old name will work. Also the --follow is lost.
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      8ce9bdd1
    • Boaz Harrosh's avatar
      exofs: statfs blocks is sectors not FS blocks · cae012d8
      Boaz Harrosh authored 
      Even though exofs has a 4k block size, statfs blocks
is in sectors (512 bytes).

Also if target returns 0 for capacity then make it
ULLONG_MAX. df does not like zero-size filesystems
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      cae012d8
    • Boaz Harrosh's avatar
      exofs: Prints on mount and unmout · 19fe294f
      Boaz Harrosh authored 
      It is important to print in the logs when a filesystem was
mounted and eventually unmounted.

Print the osd-device's osd_name and pid the FS was
mounted/unmounted on.

TODO: How to also print the namespace path the filesystem was
      mounted on?
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      19fe294f
    • Boaz Harrosh's avatar
      exofs: refactor exofs_i_info initialization into common helper · 9cfdc7aa
      Boaz Harrosh authored 
      There are two places that initialize inodes: exofs_iget() and
exofs_new_inode()

As more members of exofs_i_info that need initialization are
added this code will grow. (soon)
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      9cfdc7aa
    • Boaz Harrosh's avatar
      exofs: dbg-print less · fe33cc1e
      Boaz Harrosh authored 
      Iner-loops printing is converted to EXOFS_DBG2 which is #defined
to nothing.

It is now almost bareable to just leave debug-on. Every operation
is printed once, with most relevant info (I hope).
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      fe33cc1e
    • Boaz Harrosh's avatar
      exofs: More sane debug print · 58311c43
      Boaz Harrosh authored 
      debug prints should be somewhat useful without actually
reading the source code
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      58311c43
    • Thadeu Lima de Souza Cascardo's avatar
      trivial: some small fixes in exofs documentation · 9f249162
      Thadeu Lima de Souza Cascardo authored 
      Add exofs.txt to filesystems Documentation index and fix some typos,
identation and grammar.
Signed-off-by: default avatarThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      9f249162
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