. 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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