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  1. 10 12月, 2007 2 次提交
  3. 17 10月, 2007 2 次提交
    • J
      [XFS] eagerly remove vmap mappings to avoid upsetting Xen · 7f015072
      由 Jeremy Fitzhardinge 提交于 
      XFS leaves stray mappings around when it vmaps memory to make it virtually
contigious. This upsets Xen if one of those pages is being recycled into a
pagetable, since it finds an extra writable mapping of the page.

This patch solves the problem in a brute force way, by making XFS always
eagerly unmap its mappings.

SGI-PV: 971902
SGI-Modid: xfs-linux-melb:xfs-kern:29886a
Signed-off-by: NJeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>
      7f015072
    • J
      xfs: eagerly remove vmap mappings to avoid upsetting Xen · ace2e92e
      由 Jeremy Fitzhardinge 提交于 
      XFS leaves stray mappings around when it vmaps memory to make it
virtually contigious.  This upsets Xen if one of those pages is being
recycled into a pagetable, since it finds an extra writable mapping of
the page.

This patch solves the problem in a brute force way, by making XFS
always eagerly unmap its mappings.  David Chinner says this shouldn't
have any performance impact on filesystems with default block sizes;
it will only affect filesystems with large block sizes.
Signed-off-by: NJeremy Fitzhardinge <jeremy@xensource.com>
Acked-by: NDavid Chinner <dgc@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: XFS masters <xfs-masters@oss.sgi.com>
Cc: Stable kernel <stable@kernel.org>
Cc: Morten =?utf-8?q?B=C3=B8geskov?= <xen-users@morten.bogeskov.dk>
Cc: Mark Williamson <mark.williamson@cl.cam.ac.uk>
      ace2e92e
  5. 15 10月, 2007 1 次提交
  7. 12 10月, 2007 1 次提交
  9. 10 10月, 2007 1 次提交
  11. 18 7月, 2007 1 次提交
  13. 14 7月, 2007 4 次提交
  15. 08 5月, 2007 1 次提交
  17. 23 3月, 2007 1 次提交
  19. 10 2月, 2007 3 次提交
    • D
      [XFS] Keep stack usage down for 4k stacks by using noinline. · 7989cb8e
      由 David Chinner 提交于 
      gcc-4.1 and more recent aggressively inline static functions which
increases XFS stack usage by ~15% in critical paths. Prevent this from
occurring by adding noinline to the STATIC definition.

Also uninline some functions that are too large to be inlined and were
causing problems with CONFIG_FORCED_INLINING=y.

Finally, clean up all the different users of inline, __inline and
__inline__ and put them under one STATIC_INLINE macro. For debug kernels
the STATIC_INLINE macro uninlines those functions.

SGI-PV: 957159
SGI-Modid: xfs-linux-melb:xfs-kern:27585a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NDavid Chatterton <chatz@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>
      7989cb8e
    • D
      [XFS] Current usage of buftarg flags is incorrect. · 5e6a07df
      由 David Chinner 提交于 
      The {test,set,clear}_bit() operations take a bit index for the bit to
operate on. The XBT_* flags are defined as bit fields which is incorrect,
not to mention the way the bit fields are enumerated is broken too. This
was only working by chance.

Fix the definitions of the flags and make the code using them use the
{test,set,clear}_bit() operations correctly.

SGI-PV: 958639
SGI-Modid: xfs-linux-melb:xfs-kern:27565a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>
      5e6a07df
    • D
      [XFS] Fix a synchronous buftarg flush deadlock when freezing. · 585e6d88
      由 David Chinner 提交于 
      At the last stage of a freeze, we flush the buftarg synchronously over and
over again until it succeeds twice without skipping any buffers.

The delwri list flush skips pinned buffers, but tries to flush all others.
It removes the buffers from the delwri list, then tries to lock them one
at a time as it traverses the list to issue the I/O. It holds them locked
until we issue all of the I/O and then unlocks them once we've waited for
it to complete.

The problem is that during a freeze, the filesystem may still be doing
stuff - like flushing delalloc data buffers - in the background and hence
we can be trying to lock buffers that were on the delwri list at the same
time. Hence we can get ABBA deadlocks between threads doing allocation and
the buftarg flush (freeze) thread.

Fix it by skipping locked (and pinned) buffers as we traverse the delwri
buffer list.

SGI-PV: 957195
SGI-Modid: xfs-linux-melb:xfs-kern:27535a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>
      585e6d88
  21. 08 12月, 2006 2 次提交
  23. 22 11月, 2006 1 次提交
  25. 11 11月, 2006 1 次提交
  27. 21 10月, 2006 1 次提交
    • A
      [PATCH] separate bdi congestion functions from queue congestion functions · 3fcfab16
      由 Andrew Morton 提交于 
      Separate out the concept of "queue congestion" from "backing-dev congestion".
Congestion is a backing-dev concept, not a queue concept.

The blk_* congestion functions are retained, as wrappers around the core
backing-dev congestion functions.

This proper layering is needed so that NFS can cleanly use the congestion
functions, and so that CONFIG_BLOCK=n actually links.

Cc: "Thomas Maier" <balagi@justmail.de>
Cc: "Jens Axboe" <jens.axboe@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: David Howells <dhowells@redhat.com>
Cc: Peter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      3fcfab16
  29. 28 9月, 2006 4 次提交
  31. 29 6月, 2006 1 次提交
  33. 11 4月, 2006 1 次提交
  35. 22 3月, 2006 1 次提交
    • C
      [PATCH] page migration reorg · b20a3503
      由 Christoph Lameter 提交于 
      Centralize the page migration functions in anticipation of additional
tinkering.  Creates a new file mm/migrate.c

1. Extract buffer_migrate_page() from fs/buffer.c

2. Extract central migration code from vmscan.c

3. Extract some components from mempolicy.c

4. Export pageout() and remove_from_swap() from vmscan.c

5. Make it possible to configure NUMA systems without page migration
   and non-NUMA systems with page migration.

I had to so some #ifdeffing in mempolicy.c that may need a cleanup.
Signed-off-by: NChristoph Lameter <clameter@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      b20a3503
  37. 14 3月, 2006 1 次提交
  39. 02 2月, 2006 1 次提交
  41. 01 2月, 2006 1 次提交
  43. 11 1月, 2006 4 次提交
  45. 04 11月, 2005 1 次提交
  47. 02 11月, 2005 3 次提交