The patch titled
invalidate_inode_pages2(): ignore page refcounts
has been removed from the -mm tree. Its filename is
invalidate_inode_pages2-ignore-page-refcounts.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: invalidate_inode_pages2(): ignore page refcounts
From: Andrew Morton <akpm@xxxxxxxx>
The recent fix to invalidate_inode_pages() (git commit 016eb4a) managed to
unfix invalidate_inode_pages2().
The problem is that various bits of code in the kernel can take transient refs
on pages: the page scanner will do this when inspecting a batch of pages, and
the lru_cache_add() batching pagevecs also hold a ref.
Net result is transient failures in invalidate_inode_pages2(). This affects
NFS directory invalidation (observed) and presumably also block-backed
direct-io (not yet reported).
Fix it by reverting invalidate_inode_pages2() back to the old version which
ignores the page refcounts.
We may come up with something more clever later, but for now we need a 2.6.18
fix for NFS.
Cc: Chuck Lever <cel@xxxxxxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/truncate.c | 34 ++++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
diff -puN mm/truncate.c~invalidate_inode_pages2-ignore-page-refcounts mm/truncate.c
--- a/mm/truncate.c~invalidate_inode_pages2-ignore-page-refcounts
+++ a/mm/truncate.c
@@ -287,9 +287,39 @@ unsigned long invalidate_inode_pages(str
{
return invalidate_mapping_pages(mapping, 0, ~0UL);
}
-
EXPORT_SYMBOL(invalidate_inode_pages);
+/*
+ * This is like invalidate_complete_page(), except it ignores the page's
+ * refcount. We do this because invalidate_inode_pages2() needs stronger
+ * invalidation guarantees, and cannot afford to leave pages behind because
+ * shrink_list() has a temp ref on them, or because they're transiently sitting
+ * in the lru_cache_add() pagevecs.
+ */
+static int
+invalidate_complete_page2(struct address_space *mapping, struct page *page)
+{
+ if (page->mapping != mapping)
+ return 0;
+
+ if (PagePrivate(page) && !try_to_release_page(page, 0))
+ return 0;
+
+ write_lock_irq(&mapping->tree_lock);
+ if (PageDirty(page))
+ goto failed;
+
+ BUG_ON(PagePrivate(page));
+ __remove_from_page_cache(page);
+ write_unlock_irq(&mapping->tree_lock);
+ ClearPageUptodate(page);
+ page_cache_release(page); /* pagecache ref */
+ return 1;
+failed:
+ write_unlock_irq(&mapping->tree_lock);
+ return 0;
+}
+
/**
* invalidate_inode_pages2_range - remove range of pages from an address_space
* @mapping: the address_space
@@ -356,7 +386,7 @@ int invalidate_inode_pages2_range(struct
}
}
was_dirty = test_clear_page_dirty(page);
- if (!invalidate_complete_page(mapping, page)) {
+ if (!invalidate_complete_page2(mapping, page)) {
if (was_dirty)
set_page_dirty(page);
ret = -EIO;
_
Patches currently in -mm which might be from akpm@xxxxxxxx are
origin.patch
git-acpi.patch
acpi-preserve-correct-battery-state-through-suspend-resume-cycles-tidy.patch
acpi-asus-s3-resume-fix.patch
sony_apci-resume.patch
kauditd_thread-warning-fix.patch
git-dvb.patch
git-dvb-fixup.patch
git-geode-fixup.patch
git-gfs2.patch
streamline-generic_file_-interfaces-and-filemap-gfs-fix.patch
git-ia64.patch
git-input.patch
hdrcheck-permission-fix.patch
git-libata-all.patch
libata-return-sense-data-in-hdio_drive_cmd-ioctl-tidy.patch
mmc-driver-for-ti-flashmedia-card-reader-source.patch
git-mtd-fixup.patch
git-netdev-all.patch
forcedeth-power-management-support-tidy.patch
drivers-net-ns83820c-add-paramter-to-disable-auto.patch
revert-genirq-core-fix-handle_level_irq.patch
git-parisc-fixup.patch
git-parisc-powerpc-fix.patch
git-pcmcia-fixup.patch
git-serial.patch
git-serial-fixup.patch
serial-fix-uart_bug_txen-test.patch
revert-gregkh-pci-altix-rom-shadowing.patch
revert-gregkh-pci-altix-sn-acpi-hotplug-support.patch
revert-gregkh-pci-altix-add-initial-acpi-io-support.patch
pci-optionally-sort-device-lists-breadth-first-tweaks.patch
pci-optionally-sort-device-lists-breadth-first-force-on.patch
git-scsi-misc.patch
git-scsi-target-fixup.patch
git-scsi-target-vs-git-block.patch
xpad-dance-pad-support-tidy.patch
git-watchdog.patch
git-watchdog-fixup.patch
revert-x86_64-mm-i386-pda-current.patch
revert-x86_64-mm-i386-pda-smp_processor_id.patch
revert-x86_64-mm-i386-pda-fix-vm86.patch
revert-x86_64-mm-i386-pda-fix-abi.patch
revert-x86_64-mm-i386-pda-use-gs.patch
revert-x86_64-mm-i386-pda-init.patch
revert-x86_64-mm-i386-pda-definitions.patch
revert-x86_64-mm-i386-pda-asm-offsets.patch
revert-insert-ioapics-and-local-apic-into-resource-map.patch
x86_64-dump_trace-atomicity-fix.patch
spinlock-debug-all-cpu-backtrace.patch
spinlock-debug-all-cpu-backtrace-fix.patch
spinlock-debug-all-cpu-backtrace-fix-2.patch
spinlock-debug-all-cpu-backtrace-fix-3.patch
xfs-rename-uio_read.patch
get-rid-of-zone_table-fix.patch
slab-reduce-numa-text-size-tidy.patch
radix-tree-rcu-lockless-readside.patch
acx1xx-wireless-driver.patch
tiacx-pci-build-fix.patch
tiacx-ia64-fix.patch
tiacx-build-fix.patch
swsusp-add-resume_offset-command-line-parameter-rev-2-fix.patch
deprecate-smbfs-in-favour-of-cifs.patch
edac-new-opteron-athlon64-memory-controller-driver.patch
edac-new-opteron-athlon64-memory-controller-driver-tidy.patch
add-address_space_operationsbatch_write-fix.patch
kmemdup-introduce-vs-slab-clean-up-leak-tracking-ifdefs-a-little-bit.patch
add-config_headers_check-option-to-automatically-run-make-headers_check-nobble.patch
generic-bug-handling.patch
use-generic-bug-for-i386.patch
use-generic-bug-for-x86-64.patch
use-generic-bug-for-powerpc.patch
use-generic-bug-for-powerpc-fix-2.patch
use-generic-bug-for-powerpc-fix-infinite-loop-on-bug.patch
bug-test-1.patch
list-module-taint-flags-in-oops-panic-tidy.patch
fs-cache-make-kafs-use-fs-cache-fix.patch
fs-cache-make-kafs-use-fs-cache-vs-streamline-generic_file_-interfaces-and-filemap.patch
nfs-use-local-caching-12-fix.patch
vfs-make-filldir_t-and-struct-kstat-deal-in-64-bit-inode-numbers-alpha-fix.patch
move-pidmap-to-pspaceh-fix.patch
kprobes-handle-symbol-resolution-when-modulesymbol-is-specified-tidy.patch
isdn-work-around-excessive-udelay.patch
knfsd-add-a-callback-for-when-last-rpc-thread-finishes-tidy.patch
knfsd-add-a-callback-for-when-last-rpc-thread-finishes-fix.patch
knfsd-separate-out-some-parts-of-nfsd_svc-which-start-nfs-servers-tweaks.patch
knfsd-define-new-nfsdfs-file-portlist-contains-list-of-ports-tidy.patch
knfsd-define-new-nfsdfs-file-portlist-contains-list-of-ports-fix.patch
knfsd-drop-serv-option-to-svc_recv-and-svc_process-nfs-callback-fix-nfs-callback-fix.patch
knfsd-move-tempsock-aging-to-a-timer-tidy.patch
knfsd-nfsd4-fslocations-data-structures-fix.patch
sched-remove-unnecessary-sched-group-allocations-fix.patch
swap_prefetch-vs-zoned-counters.patch
ecryptfs-mmap-operations.patch
ecryptfs-alpha-build-fix.patch
ecryptfs-more-elegant-aes-key-size-manipulation.patch
ecryptfs-get_sb_dev-fix.patch
make-kmem_cache_destroy-return-void-ecryptfs.patch
ecryptfs-versioning-fixes-tidy.patch
namespaces-add-nsproxy.patch
namespaces-utsname-switch-to-using-uts-namespaces.patch
namespaces-utsname-switch-to-using-uts-namespaces-klibc-bit-sparc.patch
namespaces-utsname-use-init_utsname-when-appropriate.patch
namespaces-utsname-implement-utsname-namespaces.patch
namespaces-utsname-sysctl-hack.patch
ipc-namespace-core.patch
rename-the-provided-execve-functions-to-kernel_execve-headers-fix.patch
replace-cad_pid-by-a-struct-pid-fixes.patch
readahead-sysctl-parameters-fix.patch
make-copy_from_user_inatomic-not-zero-the-tail-on-i386-vs-reiser4.patch
make-kmem_cache_destroy-return-void-reiser4.patch
reiser4-hardirq-include-fix.patch
reiser4-run-truncate_inode_pages-in-reiser4_delete_inode.patch
reiser4-get_sb_dev-fix.patch
reiser4-vs-zoned-allocator.patch
reiser4-rename-generic_sounding_globalspatch-fix.patch
hpt3xx-rework-rate-filtering-tidy.patch
genirq-convert-the-i386-architecture-to-irq-chips.patch
genirq-x86_64-irq-reenable-migrating-irqs-to-other-cpus.patch
genirq-msi-simplify-msi-enable-and-disable.patch
genirq-ia64-irq-dynamic-irq-support.patch
genirq-msi-only-build-msi-apicc-on-ia64-fix.patch
genirq-i386-irq-remove-the-msi-assumption-that-irq-==-vector.patch
genirq-x86_64-irq-make-vector_irq-per-cpu-fix.patch
genirq-x86_64-irq-make-vector_irq-per-cpu-warning-fix.patch
add-hypertransport-capability-defines-fix.patch
initial-generic-hypertransport-interrupt-support-Kconfig-fix.patch
srcu-report-out-of-memory-errors-fixlet.patch
isdn-debug-build-fix.patch
isdn-more-pr_debug-fixes.patch
nr_blockdev_pages-in_interrupt-warning.patch
device-suspend-debug.patch
slab-leaks3-default-y.patch
x86-kmap_atomic-debugging.patch
restore-rogue-readahead-printk.patch
put_bh-debug.patch
acpi_format_exception-debug.patch
jmicron-warning-fix.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
