The patch titled
slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes
has been removed from the -mm tree. Its filename was
slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes.patch
This patch was dropped because it was folded into slub-do-our-own-locking-via-slab_lock-and-slab_unlock.patch
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
ERROR: do not use assignment in if condition
#627: FILE: mm/slub.c:2827:
+ if (!page->inuse && (state = slab_trylock(page))) {
total: 1 errors, 0 warnings, 611 lines checked
Your patch has style problems, please review. If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.
Please run checkpatch prior to sending patches
Seems nicer this way.
Should the `if (page->inuse)' test be marked unlikely()?
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff -puN mm/slub.c~slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes mm/slub.c
--- a/mm/slub.c~slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes
+++ a/mm/slub.c
@@ -2819,20 +2819,23 @@ int kmem_cache_shrink(struct kmem_cache
* list_lock. page->inuse here is the upper limit.
*/
list_for_each_entry_safe(page, t, &n->partial, lru) {
- if (!page->inuse && (state = slab_trylock(page))) {
- /*
- * Must hold slab lock here because slab_free
- * may have freed the last object and be
- * waiting to release the slab.
- */
- list_del(&page->lru);
- n->nr_partial--;
- slab_unlock(page, state);
- discard_slab(s, page);
- } else {
+ if (page->inuse) {
list_move(&page->lru,
slabs_by_inuse + page->inuse);
+ continue;
}
+ state = slab_trylock(page);
+ if (!state)
+ continue;
+ /*
+ * Must hold slab lock here because slab_free may have
+ * freed the last object and be waiting to release the
+ * slab.
+ */
+ list_del(&page->lru);
+ n->nr_partial--;
+ slab_unlock(page, state);
+ discard_slab(s, page);
}
/*
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
kvm-i386-fix.patch
drivers-net-wireless-b43-mainc-needs-ioh.patch
get_task_comm-return-the-result.patch
clone-prepare-to-recycle-clone_detached-and-clone_stopped.patch
timerfd-v3-new-timerfd-api.patch
include-asm-powerpc-nvramh-needs-listh.patch
serial-add-addi-data-gmbh-communication-cardsin8250_pcic-and-pci_idsh.patch
pagecache-zeroing-zero_user_segment-zero_user_segments-and-zero_user.patch
vmalloc-add-const-to-void-parameters.patch
i386-resolve-dependency-of-asm-i386-pgtableh-on-highmemh.patch
slub-fix-coding-style-violations.patch
slub-provide-unique-end-marker-for-each-slab.patch
slub-do-our-own-locking-via-slab_lock-and-slab_unlock.patch
slub-do-our-own-locking-via-slab_lock-and-slab_unlock-checkpatch-fixes.patch
bufferhead-revert-constructor-removal-checkpatch-fixes.patch
shmem-factor-out-sbi-free_inodes-manipulations-fix.patch
maps4-rework-task_size-macros-mips-fix.patch
maps4-add-proc-kpagecount-interface-fix.patch
maps4-add-proc-kpageflags-interface-fix.patch
maps4-add-proc-kpageflags-interface-fix-2-fix.patch
maps4-make-page-monitoring-proc-file-optional-fix.patch
page-allocator-clean-up-pcp-draining-functions-swsusp-fix-fix.patch
add-mm-argument-to-pte-pmd-pud-pgd_free-checkpatch-fixes.patch
mm-page-writeback-highmem_is_dirtyable-option-fix.patch
mm-remove-fastcall-from-mm-checkpatch-fixes.patch
page-migraton-handle-orphaned-pages-fix.patch
vmscan-give-referenced-active-and-unmapped-pages-a-second-trip-around-the-lru.patch
vm-dont-run-touch_buffer-during-buffercache-lookups.patch
revert-capabilities-clean-up-file-capability-reading.patch
revert-capabilities-clean-up-file-capability-reading-checkpatch-fixes.patch
add-64-bit-capability-support-to-the-kernel-checkpatch-fixes.patch
add-64-bit-capability-support-to-the-kernel-fix.patch
add-64-bit-capability-support-to-the-kernel-fix-modify-old-libcap-warning-message-checkpatch-fixes.patch
add-64-bit-capability-support-to-the-kernel-fix-modify-old-libcap-warning-message-fix.patch
smack-version-11c-simplified-mandatory-access-control-kernel-fix.patch
alpha-atomic_add_return-should-return-int.patch
alpha-fix-warning-by-fixing-flush_tlb_kernel_range.patch
pm-qos-infrastructure-and-interface.patch
pm-qos-infrastructure-and-interface-static-initialization-with-blocking-notifiers.patch
dio-array_size-cleanup-update-checkpatch-fixes.patch
uml-get-rid-of-asmlinkage-checkpatch-fixes.patch
uml-improve-detection-of-host-cmov-checkpatch-fixes.patch
uml-further-bugsc-tidying-checkpatch-fixes.patch
kernel-printkc-concerns-about-the-console-handover.patch
riscom8-fix-smp-brokenness-fix.patch
sound-oss-pss-set_io_base-always-returns-success-mark-it-void-checkpatch-fixes.patch
remove-warnings-for-longstanding-conditions-fix.patch
genericizing-iova-fix.patch
parallel-port-convert-port_mutex-to-the-mutex-api-checkpatch-fixes.patch
remove-support-for-un-needed-_extratext-section-checkpatch-fixes.patch
allow-auto-destruction-of-loop-devices-checkpatch-fixes.patch
read_current_time-cleanups.patch
read_current_time-cleanups-build-fix-fix.patch
address-hfs-on-disk-corruption-robustness-review-comments.patch
get-rid-of-nr_open-and-introduce-a-sysctl_nr_open-fix.patch
kallsyms-should-prefer-non-weak-symbols-checkpatch-fixes.patch
deprecate-smbfs-in-favour-of-cifs.patch
quota-improve-inode-list-scanning-in-add_dquot_ref-fix.patch
tty-enable-the-echoing-of-c-in-the-n_tty-discipline-checkpatch-fixes.patch
stopmachine-semaphore-to-mutex-fix.patch
parport-add-support-for-the-quatech-sppxp-100-parallel-port-pci-expresscard-fix.patch
debug_smp_processor_id-fixlets.patch
use-ilog2-in-fs-namespacec-fix.patch
system-timer-fix-crash-in-100hz-system-timer-cleanup.patch
speed-up-jiffies-conversion-functions-if-hz==user_hz.patch
drivers-isdn-hardware-eicon-debugc-fix-uninitialized-var-warning.patch
ecryptfs-make-show_options-reflect-actual-mount-options-fix.patch
rtc-ds1302-rtc-support-checkpatch-fixes.patch
add-hpet-rtc-emulation-to-rtc_drv_cmos-fix.patch
fbmon-cleanup-trailing-whitespaces-checkpatch-fixes.patch
neofb-avoid-overwriting-fb_info-fields.patch
vermilionc-use-align-not-__align_mask.patch
md-change-interate_mddev-to-for_each_mddev-fix.patch
md-change-iterate_rdev-to-rdev_for_each-fix.patch
declare-pnp-option-parsing-functions-as-__init-checkpatch-fixes.patch
isapnp-driver-semaphore-to-mutex-fix.patch
isapnp-driver-semaphore-to-mutex-fix-fix.patch
ext3-fix-lock-inversion-in-direct-io-fix.patch
kill-filp_open-checkpatch-fixes.patch
rename-open_namei-to-open_pathname-fix.patch
r-o-bind-mounts-elevate-write-count-during-entire-ncp_ioctl-fix.patch
r-o-bind-mounts-elevate-write-count-for-do_utimes.patch
r-o-bind-mounts-elevate-write-count-for-some-ioctls-checkpatch-fixes.patch
r-o-bind-mounts-elevate-write-count-for-some-ioctls-vs-forbid-user-to-change-file-flags-on-quota-files.patch
r-o-bind-mounts-elevate-write-count-opened-files-oops-fix.patch
r-o-bind-mounts-nfs-check-mnt-instead-of-superblock-directly-checkpatch-fixes.patch
r-o-bind-mounts-track-number-of-mount-writer-fix-buggy-loop-checkpatch-fixes.patch
keep-track-of-mnt_writer-state-of-struct-file-fix-warn_on-fix.patch
cgroup-simplify-space-stripping-fix.patch
memory-controller-memory-accounting-v7.patch
memory-controller-add-per-container-lru-and-reclaim-v7.patch
memory-controller-oom-handling-v7.patch
memory-controller-add-switch-to-control-what-type-of-pages-to-limit-v7.patch
memcontrol-move-mm_cgroup-to-header-file-fix.patch
memcontrol-move-mm_cgroup-to-header-file-fix-2.patch
memcontrol-move-oom-task-exclusion-to-tasklist.patch
memory-cgroup-enhancements-fix-zone-handling-in-try_to_free_mem_cgroup_page.patch
memory-cgroup-enhancements-add-status-accounting-function-for-memory-cgroup.patch
memory-cgroup-enhancements-add-memorystat-file.patch
per-zone-and-reclaim-enhancements-for-memory-controller-take-3-remember-reclaim-priority-in-memory-cgroup.patch
per-zone-and-reclaim-enhancements-for-memory-controller-take-3-modifies-vmscanc-for-isolate-globa-cgroup-lru-activity.patch
cgroups-mechanism-to-process-each-task-in-a-cgroup-cleanup.patch
cgroups-mechanism-to-process-each-task-in-a-cgroup-checkpatch-fixes.patch
hotplug-cpu-move-tasks-in-empty-cpusets-to-parent-checkpatch-fixes.patch
cpusets-update_cpumask-revision-fix.patch
cpusets-update_cpumask-revision-checkpatch-fixes.patch
drivers-edac-add-marvell-mv64x60-driver-fix.patch
introduce-flags-for-reserve_bootmem-checkpatch-fixes.patch
iget-stop-affs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-efs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext2-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext3-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-freevxfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-the-minix-filesystem-from-using-iget-and-checkpatch-fixes.patch
iget-stop-procfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-qnx4-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-romfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-the-sysv-filesystem-from-using-iget-and-checkpatch-fixes.patch
iget-stop-ufs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-hostfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-unionfs-from-using-iget-and-read_inode-fix-2.patch
embed-a-struct-path-into-struct-nameidata-instead-of-nd-dentrymnt-checkpatch-fixes.patch
embed-a-struct-path-into-struct-nameidata-instead-of-nd-dentrymnt-vs-git-unionfs.patch
embed-a-struct-path-into-struct-nameidata-instead-of-nd-dentrymnt-cifs-fix.patch
embed-a-struct-path-into-struct-nameidata-instead-of-nd-dentrymnt-smack-fix.patch
introduce-path_put-cifs-fix.patch
one-less-parameter-to-__d_path-checkpatch-fixes.patch
d_path-use-struct-path-in-struct-avc_audit_data-checkpatch-fixes.patch
d_path-make-get_dcookie-use-a-struct-path-argument-checkpatch-fixes.patch
use-struct-path-in-struct-svc_export-checkpatch-fixes.patch
d_path-make-d_path-use-a-struct-path-fix.patch
cleanup-the-code-managed-with-the-user_ns-option-checkpatch-fixes.patch
cleanup-the-code-managed-with-pid_ns-option-checkpatch-fixes.patch
proc-detect-duplicate-names-on-registration-fix.patch
proc-seqfile-convert-proc_pid_status-to-properly-handle-pid-namespaces-checkpatch-fixes.patch
proc-seqfile-convert-proc_pid_status-to-properly-handle-pid-namespaces-fix.patch
proc-seqfile-convert-proc_pid_status-to-properly-handle-pid-namespaces-fix-2.patch
proc-seqfile-convert-proc_pid_status-to-properly-handle-pid-namespaces-fix-3.patch
proc-seqfile-convert-proc_pid_status-to-properly-handle-pid-namespaces-nommu-fix.patch
proc-fix-openless-usage-due-to-proc_fops-flip-checkpatch-fixes.patch
intel-iommu-fault_reason_index_cleanuppatch-fix.patch
modules-make-module_address_lookup-safe-fix.patch
wait_task_stopped-simplify-and-fix-races-with-sigcont-sigkill-untrace-fix.patch
pid-sys_wait-fixes-v2-checkpatch-fixes.patch
aout-suppress-aout-library-support-if-config_arch_supports_aout-vs-git-x86.patch
aout-suppress-aout-library-support-if-config_arch_supports_aout-vs-sanitize-the-type-of-struct-useru_ar0.patch
aout-remove-unnecessary-inclusions-of-asm-linux-aouth-alpha-fix.patch
mn10300-add-the-mn10300-am33-architecture-to-the-kernel-fix.patch
rewrite-rd-fixes.patch
fs-remove-fastcall-it-is-always-empty-checkpatch-fixes.patch
kernel-remove-fastcall-in-kernel-checkpatch-fixes.patch
lib-remove-fastcall-from-lib-checkpatch-fixes.patch
remove-fastcall-from-linux-include-checkpatch-fixes.patch
constify-tables-in-kernel-sysctl_checkc-fix.patch
aoe-statically-initialise-devlist_lock.patch
xfs-convert-bex_add-to-bex_add_cpu-new-common-api-fix.patch
ufs-fix-symlink-creation-on-ufs2-fix.patch
libfs-allow-error-return-from-simple-attributes-fix.patch
fs-hfsplus-unicodec-fix-uninitialized-var-warning.patch
fs-afs-securityc-fix-uninitialized-var-warning.patch
mount-options-fix-tmpfs-fix.patch
char-applicom-use-pci_match_id-fix.patch
add-new-string-functions-strict_strto-and-convert-kernel-params-to-use-them-fix.patch
reiser4.patch
jens-broke-reiser4patch-added-to-mm-tree.patch
page-owner-tracking-leak-detector.patch
page-owner-tracking-leak-detector-broken-on-s390.patch
nr_blockdev_pages-in_interrupt-warning.patch
slab-leaks3-default-y.patch
profile-likely-unlikely-macros-fix.patch
put_bh-debug.patch
shrink_slab-handle-bad-shrinkers.patch
getblk-handle-2tb-devices.patch
getblk-handle-2tb-devices-fix.patch
undeprecate-pci_find_device.patch
w1-build-fix.patch
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