2.5.50-mm2

2.5.50-mm2

[Andrew Morton]

url: http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.50/2.5.50-mm2/

  -> 2.5.50-mm2.gz        Full patch
  -> 2.5.50-mm2-shpte.gz  Up to `shpte-always-on', for Dave to work against

Lots of fixes. Some things dropped for various reasons.  A decent
amount of rework against the high-level writeback code.


Since 2.5.50-mm1:

-fbcon-timer-fix.patch
-hugepage-fixes.patch
-ext3-oldalloc.patch
-simplified-vm-throttling.patch
-page-reclaim-motion.patch
-handle-fail-writepage.patch
-activate-unreleaseable-pages.patch
-ipc_barriers.patch
-signal-speedup.patch
-pf_memdie.patch
-suppress-write-error-warnings.patch
-truncate-speedup.patch
-spill-lru-lists.patch
-readdir-speedup.patch       (Linus fixed all the bugs in it)

 Merged

-epoll-bits-0.57.patch
+epoll.patch

 Davide's latest

-aio-dio-really-submit.patch
-aio-dio-deferred-dirtying.patch
-dio-counting.patch

 Folded into other patches.

-reiserfs-readpages.patch

 Dropped - it was causing fsx-linux failures.

+cputimes_stat.patch

 Put the per-cpu times back into /proc/pid/stat, CONFIGurably

-poll-1-wqalloc.patch
-poll-2-selectalloc.patch
-poll-3-alloc.patch
-poll-4-fast-select.patch
-poll-5-fast-poll.patch
-poll-6-merge.patch

 Dropped.  Increased stack utilisation was a concern, and the performance
 benefits are patchy.  Manfred is taking another look at it.

+deadsched-fix.patch

 Deadline scheduler fix

+shpte-nonlinear.patch

 Fix shared pagetables for nonlinear mappings

+pmd-allocation-fix.patch

 Always allocate PMD's out to the top of the virtual address space.

-dcache_rcu-2-2.5.48.patch
-dcache_rcu-3-2.5.48.patch

 Dropped.  Other changes broke it, and Dipankar is redoing a few things
 anyway.

+filldir-checks.patch

 Some copy_*_user checks.

+vmstats-fixes.patch

 Small vm stats fix and enhancement.

+hugetlb-fixes.patch

 Fixes from Rohit.

+writeback-interaction-fix.patch

 I had a few oddities and bogons in the fs/fs-writeback.c code.  This
 patch is a fair-sized revamp, cleanup and general sort-things-out in
 there.  It works better.

+scalable-zone-protection.patch

 Allow runtime tuning of the lower-zone protection ratio.  Needs work.

+page-wait-table-min-size.patch

 Don't allow a one-slot hashed wait table for wait_on_page()

+ext3-transaction-reserved-blocks.patch

 Fix an ext3 assertion failure which is triggerable with corrupt disk
 contents.

+remove-PF_SYNC.patch

 remove the current->flags:PF_SYNC abomination.  Adds a `sync' arg to
 all writepage implementations to tell them whether they are being
 called for memory cleansing or for data integrity.

+dont-inherit-mlockall.patch

 Don't inherit mlockall(MCL_FUTURE) across forks

+bootmem-alloc-alignment.patch

 Improved coalescing of bootmem regions

+ext23_free_blocks-check.patch

 Additional sanity checks in the block allocator.

+blkdev-rlimit.patch

 Don't apply rlimits to blockdev writes.

+readahead-pinned-memory.patch

 Don't allow gargantuan amounts of memory to be pinned in readahead

-page-walk-api-improvements.patch
-page-walk-api-bugfix.patch

 Folded into page-walk-api.patch

+page-walk-api-update.patch

 New stuff from Ingo (needs splitting up and changelogging...)




All 55 patches:


linus.patch
  cset-1.797.133.2-to-1.857.txt.gz

epoll.patch
  epoll bits 0.59 ...

kgdb.patch

dio-return-partial-result.patch

aio-direct-io-infrastructure.patch
  AIO support for raw/O_DIRECT

deferred-bio-dirtying.patch
  bio dirtying infrastructure

aio-direct-io.patch
  AIO support for raw/O_DIRECT

aio-dio-debug.patch

dio-reduce-context-switch-rate.patch
  Reduced wakeup rate in direct-io code

cputimes_stat.patch
  Retore per-cpu time accounting, with a config option

deprecate-bdflush.patch
  deprecate use of bdflush()

reduce-random-context-switch-rate.patch
  Reduce context switch rate due to the random driver

bcrl-printk.patch

read_zero-speedup.patch
  speed up read_zero() for !CONFIG_MMU

nommu-rmap-locking.patch
  Fix rmap locking for CONFIG_SWAP=n

semtimedop.patch
  semtimedop - semop() with a timeout

writeback-handle-memory-backed.patch
  skip memory-backed filesystems in writeback

remove-fail_writepage.patch
  Remove fail_writepage()

page-reservation.patch
  Page reservation API

wli-show_free_areas.patch
  show_free_areas extensions

inlines-net.patch

rbtree-iosched.patch
  rbtree-based IO scheduler

deadsched-fix.patch
  deadline scheduler fix

quota-smp-locks.patch
  Subject: [PATCH] Quota SMP locks

shpte-ng.patch
  pagetable sharing for ia32

shpte-nonlinear.patch
  shpte: support nonlinear mappings and clean up clear_share_range()

shpte-always-on.patch
  Force CONFIG_SHAREPTE=y for ia32

pmd-allocation-fix.patch
  make sure all PMDs are allocated under PAE mode

ptrace-flush.patch
  Subject: [PATCH] ptrace on 2.5.44

buffer-debug.patch
  buffer.c debugging

warn-null-wakeup.patch

pentium-II.patch
  Pentium-II support bits

radix-tree-overflow-fix.patch
  handle overflows in radix_tree_gang_lookup()

rcu-stats.patch
  RCU statistics reporting

auto-unplug.patch
  self-unplugging request queues

less-unplugging.patch
  Remove most of the blk_run_queues() calls

sync_fs.patch
  Add a sync_fs super_block operation

ext3_sync_fs.patch
  implement ext3_sync_fs

ext3-fsync-speedup.patch
  Clean up ext3_sync_file()

filldir-checks.patch
  copy_user checks in filldir()

vmstats-fixes.patch
  vm accounting fixes and addition

hugetlb-fixes.patch
  hugetlb fixes

writeback-interaction-fix.patch
  fs-writeback rework.

scalable-zone-protection.patch
  Add /proc/sys/vm/lower_zone_protection

page-wait-table-min-size.patch
  Set a minimum hash table size for wait_on_page()

ext3-transaction-reserved-blocks.patch
  Reserve an additional transaction block in ext3_dirty_inode

remove-PF_SYNC.patch

dont-inherit-mlockall.patch
  Don't inherit mm->def_flags across forks

bootmem-alloc-alignment.patch
  bootmem allocator merging fix

ext23_free_blocks-check.patch
  ext2/ext3_free_blocks() extra check

blkdev-rlimit.patch
  don't allpy file size rlimits to blockdevs

readahead-pinned-memory.patch
  limit pinned memory due to readahead

page-walk-api.patch

page-walk-scsi.patch

page-walk-api-update.patch
  pagewalk API update
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Re: 2.5.50-mm2

[Andrew Morton]

Christoph Hellwig wrote:
> 
> On Mon, Dec 09, 2002 at 12:26:48AM -0800, Andrew Morton wrote:
> > +remove-PF_SYNC.patch
> >
> >  remove the current->flags:PF_SYNC abomination.  Adds a `sync' arg to
> >  all writepage implementations to tell them whether they are being
> >  called for memory cleansing or for data integrity.
> 
> Any chance you could pass down a struct writeback_control instead of
> just the sync flag?  XFS always used ->writepage similar to the
> ->vm_writeback in older kernel releases because writing out more
> than one page of delalloc space is really needed to be efficient and
> this would allow us to get a few more hints about the VM's intentions.

Yup, no probs.

It would be good to measure how often that codepath actually gets invoked
during testing and use.  It's typically quite rare.  It should be just
MAP_SHARED stuff, although there are probably some highmem-related scenarii
in which it will happen.

I'll add a writeback_control.for_reclaim boolean so we don't have to play
games with PF_MEMALLOC to reverse engineer the calling context.

If XFS is going to writearound extra pages in ->writepage() then it would
be best to set PG_reclaim (if wbc->for_reclaim) so end_page_writeback()
will rotate them.
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Re: 2.5.50-mm2

[Christoph Hellwig]

On Mon, Dec 09, 2002 at 12:26:48AM -0800, Andrew Morton wrote:
> +remove-PF_SYNC.patch
> 
>  remove the current->flags:PF_SYNC abomination.  Adds a `sync' arg to
>  all writepage implementations to tell them whether they are being
>  called for memory cleansing or for data integrity.

Any chance you could pass down a struct writeback_control instead of
just the sync flag?  XFS always used ->writepage similar to the
->vm_writeback in older kernel releases because writing out more
than one page of delalloc space is really needed to be efficient and
this would allow us to get a few more hints about the VM's intentions.

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