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  1. 01 10月, 2010 1 次提交
  3. 25 9月, 2010 2 次提交
  5. 24 9月, 2010 1 次提交
    • M
      block: Prevent hang_check firing during long I/O · 4b197769
      由 Mark Lord 提交于 
      During long I/O operations, the hang_check timer may fire,
trigger stack dumps that unnecessarily alarm the user.

Eg.  hdparm --security-erase NULL /dev/sdb  ## can take *hours* to complete

So, if hang_check is armed, we should wake up periodically
to prevent it from triggering.  This patch uses a wake-up interval
equal to half the hang_check timer period, which keeps overhead low enough.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      4b197769
  7. 20 9月, 2010 1 次提交
    • C
      cfq: improve fsync performance for small files · 749ef9f8
      由 Corrado Zoccolo 提交于 
      Fsync performance for small files achieved by cfq on high-end disks is
lower than what deadline can achieve, due to idling introduced between
the sync write happening in process context and the journal commit.

Moreover, when competing with a sequential reader, a process writing
small files and fsync-ing them is starved.

This patch fixes the two problems by:
- marking journal commits as WRITE_SYNC, so that they get the REQ_NOIDLE
  flag set,
- force all queues that have REQ_NOIDLE requests to be put in the noidle
  tree.

Having the queue associated to the fsync-ing process and the one associated
 to journal commits in the noidle tree allows:
- switching between them without idling,
- fairness vs. competing idling queues, since they will be serviced only
  after the noidle tree expires its slice.
Acked-by: NVivek Goyal <vgoyal@redhat.com>
Reviewed-by: NJeff Moyer <jmoyer@redhat.com>
Tested-by: NJeff Moyer <jmoyer@redhat.com>
Signed-off-by: NCorrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      749ef9f8
  9. 17 9月, 2010 2 次提交
  11. 16 9月, 2010 9 次提交
  13. 15 9月, 2010 4 次提交
    • W
      init: add support for root devices specified by partition UUID · b5af921e
      由 Will Drewry 提交于 
      This is the third patch in a series which adds support for
storing partition metadata, optionally, off of the hd_struct.

One major use for that data is being able to resolve partition
by other identities than just the index on a block device.  Device
enumeration varies by platform and there's a benefit to being able
to use something like EFI GPT's GUIDs to determine the correct
block device and partition to mount as the root.

This change adds that support to root= by adding support for
the following syntax:

  root=PARTUUID=hex-uuid
Signed-off-by: NWill Drewry <wad@chromium.org>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      b5af921e
    • W
      genhd, efi: add efi partition metadata to hd_structs · eec7ecfe
      由 Will Drewry 提交于 
      This change extends the partition_meta_info structure to
support EFI GPT-specific metadata and ensures that data
is copied in on partition scanning.
Signed-off-by: NWill Drewry <wad@chromium.org>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      eec7ecfe
    • W
      block, partition: add partition_meta_info to hd_struct · 6d1d8050
      由 Will Drewry 提交于 
      I'm reposting this patch series as v4 since there have been no additional
comments, and I cleaned up one extra bit of unneeded code (in 3/3). The patches
are against Linus's tree: 2bfc96a1
(2.6.36-rc3).

Would this patchset be suitable for inclusion in an mm branch?

This changes adds a partition_meta_info struct which itself contains a
union of structures that provide partition table specific metadata.

This change leaves the union empty. The subsequent patch includes an
implementation for CONFIG_EFI_PARTITION-based metadata.
Signed-off-by: NWill Drewry <wad@chromium.org>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      6d1d8050
    • N
      block: fix an address space warning in blk-map.c · 14417799
      由 Namhyung Kim 提交于 
      Change type of 2nd parameter of blk_rq_aligned() into unsigned long
and remove unnecessary casting. Now we can call it with 'uaddr'
instead of 'ubuf' in __blk_rq_map_user() so that it can remove
following warnings from sparse:

 block/blk-map.c:57:31: warning: incorrect type in argument 2 (different address spaces)
 block/blk-map.c:57:31:    expected void *addr
 block/blk-map.c:57:31:    got void [noderef] <asn:1>*ubuf

However blk_rq_map_kern() needs one more local variable to handle it.
Signed-off-by: NNamhyung Kim <namhyung@gmail.com>
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
      14417799
  15. 14 9月, 2010 1 次提交
  17. 11 9月, 2010 3 次提交
  19. 23 8月, 2010 5 次提交
  21. 22 8月, 2010 11 次提交