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2013-07-04checkpatch: reduce false positive rate of "complex macros"Joe Perches1-1/+1
Allow "#define foo struct.member" without bleating a warning. This also allows "#define foo bar.baz->qux" and so on. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: warn on comparisons to get_jiffies_64()Joe Perches1-0/+6
Comparing get_jiffies_64() is almost always wrong and time_before64 and time_after64 should be used instead. Warn on any comparison to get_jiffies_64(). Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: warn on comparisons to jiffiesJoe Perches1-0/+6
Comparing jiffies is almost always wrong and time_before and time_after should be used instead. Warn on any comparison to jiffies. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: warn when networking block comment lines don't start with *Joe Perches1-0/+8
Some block comments in network are written as: /* block comment line 1 block comment line 2 */ Emit a warning on the "block comment line 2" because it should be /* block comment line 1 * block comment line 2 */ This warning is only emitted on the second line of a block comment. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: improve network block comment test and messageJoe Perches1-2/+2
Show the first line of the comment after a line with just /* to better show where the defective comment style is in the file. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: remove quote from CamelCase testJoe Perches1-2/+2
Commit be987d9f80 ("checkpatch: improve CamelCase test for Page") added it but it shouldn't be there. Must have been my fault. Make sure that the tested variable doesn't contain a constant. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: add --strict preference for p = kmalloc(sizeof(*p)...Joe Perches1-0/+8
Add another test for memory allocation style to follow Documentation/CodingStyle: Chapter 14: Allocating memory The preferred form for passing a size of a struct is the following: p = kmalloc(sizeof(*p), ...); Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: warn when using gcc's binary constant ("0b") extensionJoe Perches1-2/+14
The gcc extension for binary constants that start with 0b is only supported with gcc version 4.3 or higher. The kernel can still be compiled with earlier versions of gcc, so have checkpatch emit a warning for these constants. Restructure checkpatch's constant finding code a bit to support finding these binary constants. Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04checkpatch: change CamelCase test and make it --strictJoe Perches1-3/+3
Do not bleat a message on nominally acceptable CamelCase uses that are separated by an _ like drm_core_has_MTRR. CamelCase tests are also a bit noisy against certain types of code acceptable to some kernel developers. Make the test applicable only with --strict. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04lib/percpu_counter.c: __this_cpu_write() doesn't need to be protected by ↵Fan Du1-1/+1
spinlock __this_cpu_write doesn't need to be protected by spinlock, AS we are doing per cpu write with preempt disabled. And another reason to remove __this_cpu_write outside of spinlock: __percpu_counter_sum is not an accurate counter. Signed-off-by: Fan Du <fan.du@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04ipw2200: convert __list_for_each usage to list_for_eachDave Jones1-1/+1
Signed-off-by: Dave Jones <davej@redhat.com> Cc: Stanislav Yakovlev <stas.yakovlev@gmail.com> Cc: "John W. Linville" <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04radeon: remove redundant __list_for_each definition from mkregtable.cDave Jones1-13/+0
Signed-off-by: Dave Jones <davej@redhat.com> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: convert from legacy pm ops to dev_pm_opsShuah Khan1-3/+7
Convert drivers/video/backlight/class to use dev_pm_ops for power management and remove Legacy PM ops hooks. With this change, backlight class registers suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy class->suspend/resume. When __device_suspend() runs call-backs, it will find class->pm ops for the backlight class. [jg1.han@samsung.com: add CONFIG_PM_SLEEP to suspend/resume functions] Signed-off-by: Shuah Khan <shuah.kh@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Shuah Khan <shuahkhan@gmail.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Shuah Khan <shuahkhan@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04MAINTAINERS: add Backlight subsystem co-maintainerJingoo Han1-0/+1
Add myself as co-maintainer for the backlight subsystem. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04lcd: add devm_lcd_device_{register,unregister}()Jingoo Han2-0/+75
These functions allow the driver core to automatically clean up any allocation made by lcd drivers. Thus it simplifies the error paths. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: add devm_backlight_device_{register,unregister}()Jingoo Han2-0/+81
These functions allow the driver core to automatically clean up any allocation made by backlight drivers. Thus it simplifies the error paths. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: pcf50633: remove unnecessary platform_set_drvdata()Jingoo Han1-2/+0
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063100 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: lp8788: remove unnecessary platform_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063100 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: ep93xx: remove unnecessary platform_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063100 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04backlight: atmel-pwm-bl: remove unnecessary platform_set_drvdata()Jingoo Han1-2/+0
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d06310 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04MAINTAINERS: fix tape driver file mappingsJean Delvare1-3/+6
The masks for the st and osst tape drivers in MAINTAINERS are too broad and include unrelated files. Make the file list accurate so that maintainers of these drivers aren't bothered with unrelated work. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Willem Riede <osst@riede.org> Cc: Kai Mäkisara <Kai.Makisara@kolumbus.fi> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drivers/misc/sgi-gru/grufault.c: fix a sanity test in gru_set_context_option()Dimitri Sivanich1-2/+3
"req.val1 == -1" is valid but it doesn't make sense to check gru_base[-1]. gru_base[] is a global array. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drivers/dma: remove unused support for MEMSET operationsBartlomiej Zolnierkiewicz18-462/+8
There have never been any real users of MEMSET operations since they have been introduced in January 2007 by commit 7405f74badf4 ("dmaengine: refactor dmaengine around dma_async_tx_descriptor"). Therefore remove support for them for now, it can be always brought back when needed. [sebastian.hesselbarth@gmail.com: fix drivers/dma/mv_xor] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Vinod Koul <vinod.koul@intel.com> Acked-by: Dan Williams <djbw@fb.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Olof Johansson <olof@lixom.net> Cc: Kevin Hilman <khilman@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drm/i915: quirk away phantom LVDS on Intel's D525MW mainboardJani Nikula1-0/+8
This replaceable mainboard only has a VGA-out, yet it claims to also have a connected LVDS header. Addresses https://bugs.freedesktop.org/show_bug.cgi?id=65256 Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reported-by: Cornel Panceac <cpanceac@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: <annndddrr@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drm/i915: quirk away phantom LVDS on Intel's D510MO mainboardChris Wilson1-0/+8
This replaceable mainboard only has a VGA-out, yet it claims to also have a connected LVDS header. Addresses https://bugs.freedesktop.org/show_bug.cgi?id=63860 [jani.nikula@intel.com: use DMI_EXACT_MATCH for board name.] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reported-by: <annndddrr@gmail.com> Cc: Cornel Panceac <cpanceac@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04dmi: add support for exact DMI matches in addition to substring matchingJani Nikula2-5/+13
dmi_match() considers a substring match to be a successful match. This is not always sufficient to distinguish between DMI data for different systems. Add support for exact string matching using strcmp() in addition to the substring matching using strstr(). The specific use case in the i915 driver is to allow us to use an exact match for D510MO, without also incorrectly matching D510MOV: { .ident = "Intel D510MO", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"), }, } Signed-off-by: Jani Nikula <jani.nikula@intel.com> Cc: <annndddrr@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Cornel Panceac <cpanceac@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04kernel/sys.c:do_sysinfo(): use get_monotonic_boottime()Oleg Nesterov1-2/+1
Change do_sysinfo() to use get_monotonic_boottime() instead of do_posix_clock_monotonic_gettime() + monotonic_to_bootbased(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Tomas Janousek <tjanouse@redhat.com> Cc: Tomas Smetana <tsmetana@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04kernel/sys.c: sys_reboot(): fix malformed panic messageliguang1-1/+1
If LINUX_REBOOT_CMD_HALT for reboot failed, the message "cannot halt" will stay on the same line with the next message, so append a '\n'. Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04dump_stack: serialize the output from dump_stack()Alex Thorlton1-2/+45
Add functionality to serialize the output from dump_stack() to avoid mangling of the output when dump_stack is called simultaneously from multiple cpus. [akpm@linux-foundation.org: fix comment indenting, avoid inclusion of <asm/> files - use <linux/> where possiblem fix uniprocessor build (__dump_stack undefined), remove unneeded ifdef around smp.h inclusion] Signed-off-by: Alex Thorlton <athorlton@sgi.com> Reported-by: Russ Anderson <rja@sgi.com> Reviewed-by: Robin Holt <holt@sgi.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drivers: avoid parsing names as kthread_run() format stringsKees Cook19-22/+28
Calling kthread_run with a single name parameter causes it to be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drivers: avoid format strings in names passed to alloc_workqueue()Kees Cook13-27/+24
For the workqueue creation interfaces that do not expect format strings, make sure they cannot accidently be parsed that way. Additionally, clean up calls made with a single parameter that would be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04drivers: avoid format string in dev_set_nameKees Cook23-26/+25
Calling dev_set_name with a single paramter causes it to be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents, including wrappers like device_create*() and bdi_register(). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04clean up scary strncpy(dst, src, strlen(src)) usesKees Cook4-13/+10
Fix various weird constructions of strncpy(dst, src, strlen(src)). Length limits should be about the space available in the destination, not repurposed as a method to either always include or always exclude a trailing NULL byte. Either the NULL should always be copied (using strlcpy), or it should not be copied (using something like memcpy). Readable code should not depend on the weird behavior of strncpy when it hits the length limit. Better to avoid the anti-pattern entirely. [akpm@linux-foundation.org: revert getdelays.c part due to missing bsd/string.h] Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [staging] Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [acpi] Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ursula Braun <ursula.braun@de.ibm.com> Cc: Frank Blaschka <blaschka@linux.vnet.ibm.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04err.h: IS_ERR() can accept __user pointersDan Carpenter1-5/+5
Sparse generates a false positive when you pass a __user or __iomem pointer to the IS_ERR() functions. drivers/rtc/rtc-ds1286.c:344:36: sparse: incorrect type in argument 1 (different address spaces) drivers/rtc/rtc-ds1286.c:344:36: expected void const *ptr drivers/rtc/rtc-ds1286.c:344:36: got unsigned int [noderef] [usertype] <asn:2>*rtcregs We can silence these by adding a __force here and upgrading to Sparse v0.4.5-rc1 or later. This change has no effect when using current Sparse releases. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Christopher Li <sparse@chrisli.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04arch/frv/kernel/setup.c: use strncmp() instead of memcmp()Chen Gang1-1/+1
'cmdline' is a NUL terminated string, when its length < 4, memcmp() will cause memory access out of boundary. So use strncmp() instead of memcmp(). Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04arch/frv/kernel/traps.c: using vsnprintf() instead of vsprintf()Chen Gang1-1/+1
Since die_if_kernel() is an extern common used function, better always check the buffer length to avoid memory overflow by a long 'str'. Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm: memcontrol: factor out reclaim iterator loading and updatingJohannes Weiner1-29/+57
mem_cgroup_iter() is too hard to follow. Factor out the lockless reclaim iterator loading and updating so it's easier to follow the big picture. Also document the iterator invalidation mechanism a bit more extensively. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: Tejun Heo <tj@kernel.org> Reviewed-by: Tejun Heo <tj@kernel.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Glauber Costa <glommer@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm, vmalloc: use clamp() to simplify codeZhang Yanfei1-10/+2
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm, vmalloc: remove insert_vmalloc_vm()Zhang Yanfei1-7/+0
Now this function is nowhere used, we can remove it directly. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm, vmalloc: call setup_vmalloc_vm() instead of insert_vmalloc_vm()Zhang Yanfei1-2/+2
Here we pass flags with only VM_ALLOC bit set, it is unnecessary to call clear_vm_unlist to clear VM_UNLIST bit. So use setup_vmalloc_vm instead of insert_vmalloc_vm. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm, vmalloc: only call setup_vmalloc_vm() only in __get_vm_area_node()Zhang Yanfei1-10/+1
Now for insert_vmalloc_vm, it only calls the two functions: - setup_vmalloc_vm: fill vm_struct and vmap_area instances - clear_vm_unlist: clear VM_UNLIST bit in vm_struct->flags So in __get_vm_area_node(), if VM_UNLIST bit unset in flags, that is the else branch here, we don't need to clear VM_UNLIST bit for vm->flags since this bit is obviously not set. That is to say, we could only call setup_vmalloc_vm instead of insert_vmalloc_vm here. And then we could even remove the if test here. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04documentation: document the is_dirty_writeback aops callbackMel Gorman1-0/+10
Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04documentation: update address_space_operationsMel Gorman1-8/+7
The documentation for address_space_operations is partially out of date. Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04sparsemem: add BUILD_BUG_ON when sizeof mem_section is non-power-of-2Cody P Schafer2-0/+7
Instead of leaving a hidden trap for the next person who comes along and wants to add something to mem_section, add a big fat warning about it needing to be a power-of-2, and insert a BUILD_BUG_ON() in sparse_init() to catch mistakes. Right now non-power-of-2 mem_sections cause a number of WARNs at boot (which don't clearly point to the size of mem_section as an issue), but the system limps on (temporarily, at least). This is based upon Dave Hansen's earlier RFC where he ran into the same issue: "sparsemem: fix boot when SECTIONS_PER_ROOT is not power-of-2" http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/03077.html Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Jiang Liu <liuj97@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/unicore32: fix stale comment about VALID_PAGE()Jiang Liu1-6/+0
VALID_PAGE() has been removed from kernel long time ago, so fix the comment. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/microblaze: clean up unused VALID_PAGE()Jiang Liu1-1/+0
VALID_PAGE() has been removed from kernel long time ago, so clean up it. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/CRIS: clean up unused VALID_PAGE()Jiang Liu1-1/+0
VALID_PAGE() has been removed from kernel long time ago, so clean up it. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/ARM: fix stale comment about VALID_PAGE()Jiang Liu1-6/+0
VALID_PAGE() has been removed from kernel long time ago, so fix the comment. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: Nicolas Pitre <nico@linaro.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Giancarlo Asnaghi <giancarlo.asnaghi@st.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/ALPHA: clean up unused VALID_PAGE()Jiang Liu1-2/+0
VALID_PAGE() has been removed from kernel long time ago, so clean up it. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Nadia Yvette Chambers <nyc@holomorphy.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-04mm/m68k: fix build warning of unused variableJiang Liu1-5/+8
Fix build warning of unused variable: arch/m68k/mm/init.c: In function 'mem_init': arch/m68k/mm/init.c:151:6: warning: unused variable 'i' [-Wunused-variable] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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