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Subject2.5.62-mm3

http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.62/2.5.62-mm3/


. Included Dave McCracken's "Object-based RMAP" patch.

What this dopey name actually means is that when page reclaim tries to
unmap a file-backed page it walks the VMAs attached to the address_space
and the pagetables attached thereto. So there is no need for pte_chains
for these pages.

The patch is simple, but potentially has search complexity problems with
weird workloads which have high sharing levels. Allegedly. Work is
ongoing.

. Several more anticipatory scheduler tweaks. This has been an exercise
in hunting down situations in which the scheduler does the wrong thing, and
plugging those up.

The only known problem at this time is a ~20% falloff in threaded
OLTP-style database activity. This is really complex, involving
interactions between reads, O_SYNC writes and i_sem contention.

The problem will recede to less than 10% when we retune the anticipation
timer (it is currently set too high just so we can discover these things).

But we do not see a sane way of fixing this for real. At present it will
need to be manually tuned away with

echo 0 > /sys/block/hdXX/antic_expire

Later, we will probably have to perform this disabling automatically.

. There are some performance fixes which will help OLTP-style workloads
which are using regular old files through the pagecache. It seems to be
running maybe 60-70% faster than 2.4.x now, but it varies.

. A few performance patches to reduce the amount of work we do in
update_atime() and __mark_inode_dirty() should pull back some of the
regressions which have been observed in there.




Changes since 2.5.62-mm3:

+mm.patch

Update EXTRAVERSION

-anton-1.patch
-ppc64-timer-fix.patch
-ppc-entry-build-fix.patch
-ppc64-time-warning-fix.patch

Merged

+user-times-jiffies-wrap-fix.patch

Jiffy wrapping fix for process time accounting

+slab-batchcount-limit-fix.patch

Fix the fix for excessive interrupts-off time in debug-enabled slab.

+use-find_get_page.patch

Cleanup

+irda-interruptible-sleep.patch

Don't let kIrDAd contribute to load average.

+as-hz-1000-fix.patch
+as-tidy-up-rename.patch
+as-update-1.patch
+as-break-anticipation-on-write.patch
+as-break-if-readahead.patch
+as-notice-exit.patch

Anticipatory scheduler work

+readahead-shrink-to-zero.patch

Allow readahead to adapt to zero.

+objrmap-2.5.62-5.patch

VMA-based page unmapping

+kill-bogus-wakeup-messge.patch

Fix swsusp vs pdflush problem

+dont-sync-with-stopped-pdflush.patch

swsusp fix

+oprofile-up-fix.patch

Fix oprofile for uniprocessors

+update_atime-speedup.patch
+ext2-update_atime_speedup.patch
+ext3-update_atime_speedup.patch

Speed up uddate_atime() and __mark_inode_dirty()

+UPDATE_ATIME-to-update_atime.patch

Rename UPDATE_ATIME() to update_atime()

+irq-balance-disable-fix.patch

Fix the disabling of kird

+oom-killer-dont-spin-on-same-task.patch

Fix the oom-killer

+add-missing-global_flush_tlb-calls.patch

Add some global TLB flushes around change_page_attr()

+ext3-O_SYNC-speedup.patch

Speed up ext3 O_SYNC writes

+remove-MAX_BLKDEV-from-genhd.patch

Clear out some legacy stuff.





All 73 patches

linus.patch
Latest from Linus

mm.patch
add -mmN to EXTRAVERSION

ppc64-reloc_hide.patch

ppc64-pci-patch.patch
Subject: pci patch

ppc64-e100-fix.patch
fix e100 for big-endian machines

ppc64-aio-32bit-emulation.patch
32/64bit emulation for aio

ppc64-64-bit-exec-fix.patch
Subject: 64bit exec

sym-do-160.patch
make the SYM driver do 160 MB/sec

kgdb.patch

nfsd-disable-softirq.patch
Fix race in svcsock.c in 2.5.61

report-lost-ticks.patch
make lost-tick detection more informative

devfs-fix.patch

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

buffer-debug.patch
buffer.c debugging

warn-null-wakeup.patch

ext3-truncate-ordered-pages.patch
ext3: explicitly free truncated pages

deadline-dispatching-fix.patch
deadline IO scheduler dispatching fix

nfs-unstable-pages.patch
"unstable" page accounting for NFS.

initial-jiffies.patch
make jiffies wrap 5 min after boot

user-times-jiffies-wrap-fix.patch
Fix user time accounting's handling of jiffies wrap

reiserfs_file_write-4.patch
ReiserFS CPU efficient large writes for 2.5

tcp-wakeups.patch
Use fast wakeups in TCP/IPV4

lockd-lockup-fix.patch
Subject: Re: Fw: Re: 2.4.20 NFS server lock-up (SMP)

rcu-stats.patch
RCU statistics reporting

ext3-journalled-data-assertion-fix.patch
Remove incorrect assertion from ext3

nfs-speedup.patch

nfs-oom-fix.patch
nfs oom fix

sk-allocation.patch
Subject: Re: nfs oom

nfs-more-oom-fix.patch

nfs-sendfile.patch
Implement sendfile() for NFS

rpciod-atomic-allocations.patch
Make rcpiod use atomic allocations

put_page-speedup.patch
hugetlb put_page speedup

linux-isp.patch

isp-update-1.patch

remove-unused-congestion-stuff.patch
Subject: [PATCH] remove unused congestion stuff

slab-batchcount-limit-fix.patch
Fix slab batchcount limiting code

crc32-speedup-2.patch
Subject: [PATCH] crc32 improvements for 2.5, more optimizations

aic-makefile-fix.patch
aicasm Makefile fix

atm_dev_sem.patch
convert atm_dev_lock from spinlock to semaphore

flush-tlb-all-2.patch
flush_tlb_all preempt safety for voyager and x86_64

linux-2.5.62-early_ioremap_A0.patch
Early ioremap support for ia32

linux-2.5.62-x440disco_A0.patch
x440 SRAT parsing

use-find_get_page.patch
use find_get_page() in do_generic_mapping_read()

irda-interruptible-sleep.patch
Make kIrDAd us interruptible sleep

dget-BUG.patch
Check for zero d_count in dget()

sysfs-dget-fix.patch
sysfs dget() fix

disk-accounting-fix.patch
SARD accounting fix

hugh-inode-pruning-race-fix.patch
Fix race between umount and iprune

as-iosched.patch
anticipatory I/O scheduler

as-comments-and-tweaks.patch
antsched: commentary and

as-hz-1000-fix.patch
Fix anticipatory scheduler for HZ=100

as-tidy-up-rename.patch
tidy up AS rename

as-update-1.patch
AS update

as-break-anticipation-on-write.patch
AS break on write

as-break-if-readahead.patch
detect overlapping reads and writes

as-notice-exit.patch
stop anticipation if a task exits

readahead-shrink-to-zero.patch
Allow VFS readahead to fall to zero

cfq-2.patch
CFQ scheduler, #2

smalldevfs.patch
smalldevfs

smalldevfs-dcache_rcu-fix.patch
Subject: Re: 2.5.61-mm1

objrmap-2.5.62-5.patch
object-based rmap

kill-bogus-wakeup-messge.patch
swsusp: kill bogus wakeup warning

dont-sync-with-stopped-pdflush.patch
swsusp: don't sync with stopped pdflush

oprofile-up-fix.patch
fix oprofile on UP (lockless sync)

update_atime-speedup.patch
speed up update_atime()

ext2-update_atime_speedup.patch
Use one_sec_update_atime in ext2

ext3-update_atime_speedup.patch
Use one_sec_update_atime in ext2

UPDATE_ATIME-to-update_atime.patch
Rename UPDATE_ATIME to update_atime

irq-balance-disable-fix.patch
fix IRQ balancing disable controls

oom-killer-dont-spin-on-same-task.patch
don't let OOM killer kill same process repeatedly

add-missing-global_flush_tlb-calls.patch
add some missing gloabl_flush_tlb() calls

ext3-O_SYNC-speedup.patch
ext3: speed up O_SYNC writes

remove-MAX_BLKDEV-from-genhd.patch
remove MAX_BLKDEV from genhd.c



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