The patch titled
alloc_uid: cleanup
has been added to the -mm tree. Its filename is
alloc_uid-cleanup.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: alloc_uid: cleanup
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Use kmem_cache_zalloc(), remove large amounts of initialsiation code and
ifdeffery.
Note: this assumes that memset(*atomic_t, 0) correctly initialises the
atomic_t. This is true for all present archtiectures and if it becomes false
for a future architecture then we'll need to make large changes all over the
place anyway.
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/user.c | 18 ++----------------
1 file changed, 2 insertions(+), 16 deletions(-)
diff -puN kernel/user.c~alloc_uid-cleanup kernel/user.c
--- a/kernel/user.c~alloc_uid-cleanup
+++ a/kernel/user.c
@@ -356,7 +356,7 @@ void free_uid(struct user_struct *up)
local_irq_restore(flags);
}
-struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
+struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid)
{
struct hlist_head *hashent = uidhashentry(ns, uid);
struct user_struct *up, *new;
@@ -371,26 +371,12 @@ struct user_struct * alloc_uid(struct us
spin_unlock_irq(&uidhash_lock);
if (!up) {
- new = kmem_cache_alloc(uid_cachep, GFP_KERNEL);
+ new = kmem_cache_zalloc(uid_cachep, GFP_KERNEL);
if (!new)
goto out_unlock;
new->uid = uid;
atomic_set(&new->__count, 1);
- atomic_set(&new->processes, 0);
- atomic_set(&new->files, 0);
- atomic_set(&new->sigpending, 0);
-#ifdef CONFIG_INOTIFY_USER
- atomic_set(&new->inotify_watches, 0);
- atomic_set(&new->inotify_devs, 0);
-#endif
-#ifdef CONFIG_POSIX_MQUEUE
- new->mq_bytes = 0;
-#endif
- new->locked_shm = 0;
-#ifdef CONFIG_KEYS
- new->uid_keyring = new->session_keyring = NULL;
-#endif
if (sched_create_user(new) < 0)
goto out_free_user;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
lib-swiotlbc-avoid-endless-loops-fix.patch
git-x86.patch
arch-x86-kernel-ptracec-fix-defined-but-unused-warnings.patch
git-kgdb-light.patch
git-acpi.patch
git-acpi-fixup.patch
acpi-enable-c3-power-state-on-dell-inspiron-8200.patch
git-alsa-tiwai.patch
cifs-suppress-warning.patch
revert-gregkh-driver-video-add-the-go7007-driver.patch
pm-make-wakeup-flags-available-whenever-config_pm-is-set-checkpatch-fixes.patch
git-drm.patch
git-dvb.patch
drivers-media-video-pvrusb2-pvrusb2-sysfsc-fix-printk-warnings.patch
drivers-media-video-soc_camerac-reads-return-size_t.patch
git-hwmon.patch
git-gfs2-nmw.patch
git-hrt.patch
git-ieee1394.patch
drivers-input-touchscreen-ads7846c-fix-uninitialized-var-warning.patch
maple-add-driver-for-sega-dreamcast-controller.patch
git-kvm.patch
git-leds.patch
devres-implement-pcim_iomap_regions_request_all-fix.patch
devres-implement-pcim_iomap_regions_request_all-fix-fix.patch
drivers-atm-firestreamc-suppress-uninitialized-var-warning.patch
update-smc91x-driver-with-arm-versatile-board-info.patch
fs-nfs-callback_xdrc-suppress-uninitialiized-variable-warnings.patch
git-nfsd.patch
git-ocfs2.patch
drivers-pcmcia-soc_commonc-convert-soc_pcmcia_sockets_lock-into-a-mutex-and-make-it-static.patch
git-selinux.patch
git-sh.patch
git-scsi-misc-revert-st-show-options-currently-set-in-sysfs.patch
scsi-aic94xx-cleanups.patch
scsi-fix-section-mismatch-in-aic94xx-fix.patch
scsi-chc-fix-shadowed-variable-warnings-checkpatch-fixes.patch
ipsc-fix-build-warning.patch
drivers-scsi-initioc-suppress-compile-warning.patch
drivers-scsi-hptiopc-fix-build-warning.patch
drivers-scsi-mvsasc-fix-build-warnings.patch
git-block-git-rejects.patch
git-unionfs.patch
fix-gregkh-usb-usb-add-usb-serial-spcp8x5-driver.patch
fix-gregkh-usb-usb-ohci-port-reset-paranoia-timeout.patch
drivers-usb-core-devioc-suppress-warning-with-64k-page_size.patch
git-v9fs.patch
git-watchdog.patch
git-semaphore-git-rejects.patch
revert-acpi-thermal-fixup.patch
revert-pcie-utilize-pcie-transaction-pending-bit.patch
remove-sparse-warning-for-mmzoneh-checkpatch-fixes.patch
fix-invalidate_inode_pages2_range-to-not-clear-ret-checkpatch-fixes.patch
mm-make-mem_map-allocation-continuous-checkpatch-fixes.patch
vmscan-give-referenced-active-and-unmapped-pages-a-second-trip-around-the-lru.patch
vm-dont-run-touch_buffer-during-buffercache-lookups.patch
capabilities-implement-per-process-securebits-warning-fix.patch
lsm-introduce-inode_getsecid-and-ipc_getsecid-hooks-checkpatch-fixes.patch
lsm-audit-introduce-generic-audit-lsm-hooks-checkpatch-fixes.patch
selinux-use-new-audit-hooks-remove-redundant-exports-checkpatch-fixes.patch
audit-final-renamings-and-cleanup-checkpatch-fixes.patch
make-dev-kmem-a-config-option-fix.patch
misc-phantom-add-compat-ioctl-checkpatch-fixes.patch
kernel-add-clamp-and-clamp_t-macros.patch
sysrq-add-show-backtrace-on-all-cpus-function-checkpatch-fixes.patch
sysrq-add-show-backtrace-on-all-cpus-function-checkpatch-fixes-cleanup.patch
codafs-fix-build-warning.patch
lib-swiotlbc-cleanups.patch
alloc_uid-cleanup.patch
r-o-bind-mounts-elevate-write-count-for-callers-of-vfs_mkdir-fix.patch
r-o-bind-mounts-elevate-write-count-for-xattr_permission-callers-fix.patch
r-o-bind-mounts-get-write-access-for-vfs_rename-callers-fix.patch
r-o-bind-mounts-check-mnt-instead-of-superblock-directly-fix.patch
r-o-bind-mounts-check-mnt-instead-of-superblock-directly-fix-2.patch
r-o-bind-mounts-get-callers-of-vfs_mknod-create-fix.patch
fs-inodec-use-hlist_for_each_entry-checkpatch-fixes.patch
add-rcu_assign_index-if-ever-needed-fix.patch
add-warn_on_secs-macro-simplification-fix.patch
uart_get_baud_rate-stop-mangling-termios-fix.patch
oprofile-change-cpu_buffer-from-array-to-per_cpu-variable-checkpatch-fixes.patch
vt-notifier-extension-for-accessibility-checkpatch-fixes.patch
kprobes-prevent-probing-of-preempt_schedule-fix.patch
kprobes-prevent-probing-of-preempt_schedule-checkpatch-fixes.patch
quota-various-style-cleanups-checkpatch-fixes.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext3-make-ext3-handle-quotaon-on-remount-checkpatch-fixes.patch
quota-quota-core-changes-for-quotaon-on-remount-quota-ext4-make-ext4-handle-quotaon-on-remount-checkpatch-fixes.patch
rtc-isl1208-new-style-conversion-and-minor-bug-fixes-checkpatch-fixes.patch
rtc-pcf8563-new-style-conversion-checkpatch-fixes.patch
rtc-pcf8563-new-style-conversion-checkpatch-fixes-fix.patch
rtc-x1205-new-style-conversion-checkpatch-fixes.patch
fb-add-support-for-foreign-endianness-force-it-on.patch
fbcon-replace-mono_col-macro-with-static-inline-fix.patch
pnp-use-dev_printk-for-quirk-messages-fix.patch
fat_valid_media-remove-pointless-test.patch
cgroup-api-files-update-cpusets-to-use-cgroup-structured-file-api-fix.patch
workqueues-shrink-cpu_populated_map-when-cpu-dies-fix.patch
ext4-is-broken.patch
ipc-use-ipc_buildid-directly-from-ipc_addid-cleanup.patch
ipmi-run-to-completion-fixes-checkpatch-fixes.patch
ipmi-style-fixes-in-the-system-interface-code-checkpatch-fixes.patch
elf-fix-shadowed-variables-in-fs-binfmt_elfc.patch
sgi-altix-mmtimer-allow-larger-number-of-timers-per-node-fix.patch
sgi-altix-mmtimer-allow-larger-number-of-timers-per-node-fix-2.patch
epcac-static-functions-and-integer-as-null-pointer-fixes-checkpatch-fixes.patch
keys-add-keyctl-function-to-get-a-security-label-fix.patch
procfs-task-exe-symlink-fix.patch
edd-add-default-mode-config_edd_off=n-override-with-edd=onoff-fix.patch
mm-bdi-export-bdi-attributes-in-sysfs-ia64-fix.patch
basic-braille-screen-reader-support-ppc-fix.patch
hfs-fix-warning-with-64k-page_size.patch
hfsplus-fix-warning-with-64k-page_size.patch
reiser4.patch
jens-broke-reiser4patch-added-to-mm-tree.patch
page-owner-tracking-leak-detector.patch
nr_blockdev_pages-in_interrupt-warning.patch
slab-leaks3-default-y.patch
profile-likely-unlikely-macros.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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