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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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lookup should fail with ENOMEM, not silently make dentry negative.
Switched to saner calling conventions, while we are at it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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inode needs to be fully set up before we feed it to d_instantiate().
securityfs_create_file() does *not* do so; it sets ->i_fop and
->i_private only after we'd exposed the inode. Unfortunately,
that's done fairly deep in call chain, so the amount of churn
is considerable. Helper functions killed by substituting into
their solitary call sites, dead code removed. We finally can
bury default_file_ops, now that the final value of ->i_fop is
available (and assigned) at the point where inode is allocated.
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: new helper - d_make_root()
dcache: use a dispose list in select_parent
ceph: d_alloc_root() may fail
ext4: fix failure exits
isofs: inode leak on mount failure
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d_alloc_root() with iput() in case of allocation failure...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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select_parent currently abuses the dentry cache LRU to provide
cleanup features for child dentries that need to be freed. It moves
them to the tail of the LRU, then tells shrink_dcache_parent() to
calls __shrink_dcache_sb to unconditionally move them to a dispose
list (as DCACHE_REFERENCED is ignored). __shrink_dcache_sb() has to
relock the dentries to move them off the LRU onto the dispose list,
but otherwise does not touch the dentries that select_parent() moved
to the tail of the LRU. It then passses the dispose list to
shrink_dentry_list() which tries to free the dentries.
IOWs, the use of __shrink_dcache_sb() is superfluous - we can build
exactly the same list of dentries for disposal directly in
select_parent() and call shrink_dentry_list() instead of calling
__shrink_dcache_sb() to do that. This means that we avoid long holds
on the lru lock walking the LRU moving dentries to the dispose list
We also avoid the need to relock each dentry just to move it off the
LRU, reducing the numebr of times we lock each dentry to dispose of
them in shrink_dcache_parent() from 3 to 2 times.
Further, we remove one of the two callers of __shrink_dcache_sb().
This also means that __shrink_dcache_sb can be moved into back into
prune_dcache_sb() and we no longer have to handle referenced
dentries conditionally, simplifying the code.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... and ceph_init_dentry(NULL) will oops
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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a) leaking root dentry is bad
b) in case of failed ext4_mb_init() we don't want to do ext4_mb_release()
c) OTOH, in the same case we *do* want ext4_ext_release()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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d_alloc_root() failure leaves root inode leaked...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
sparc32: remove unused file: include/asm/pgtsun4.h
sparc32: fix PAGE_SIZE definition
sparc32: enable different preemptions models
sparc32: support atomic64_t
apbuart: fix section mismatch warning
sparc32: drop useless preprocessor conditional in atomic_32.h
sparc32: drop unused atomic24 support
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sun4 is no longer supported and this file is unused.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use _AC() in definition of PAGE_SIZE so the same definition
can be used in C and assembler.
Also use PAGE_SIZE in definition of THREAD_SIZE.
This commit kill the following comment:
"I have my suspicions... -DaveM"
I did not find any clue what this referred to anyway.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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While chasing following warning from kconfig I noticed that the
kconfig preemption model symbols were all dependent on sparc64.
warning: (PREEMPT && DEBUG_ATOMIC_SLEEP) selects PREEMPT_COUNT which has unmet direct dependencies (SPARC64)
>From arch/sparc/Kconfig:
if SPARC64
source "kernel/Kconfig.preempt"
endif
But looking a bit closer I see nothing obvious why
sparc32 should not support the various preemption models.
Drop the "if SPARC64" conditional to enable selection of
preemption model on sparc32 too.
Build-tested - but not run-time tested all three models.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no-one that really require atomic64_t support on sparc32.
But several drivers fails to build without proper atomic64 support.
And for an allyesconfig build for sparc32 this is annoying.
Include the generic atomic64_t support for sparc32.
This has a text footprint cost:
$size vmlinux (before atomic64_t support)
text data bss dec hex filename
3578860 134260 108781 3821901 3a514d vmlinux
$size vmlinux (after atomic64_t support)
text data bss dec hex filename
3579892 130684 108781 3819357 3a475d vmlinux
text increase (3579892 - 3578860) = 1032 bytes
data decreases - but I fail to explain why!
I have rebuild twice to check my numbers.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix following warnings:
WARNING: drivers/tty/serial/built-in.o(.text+0x7370): Section mismatch in reference from the function grlib_apbuart_configure() to the variable .init.data:apbuart_match
The function grlib_apbuart_configure() references
the variable __initdata apbuart_match.
This is often because grlib_apbuart_configure lacks a __initdata
annotation or the annotation of apbuart_match is wrong.
+ 3 more warnings like this.
There is no guarantee that grlib_apbuart_of_driver.of_match_table
is only used at __init time - so drop the __initdata annotation.
grlib_apbuart_configure() is only used during __init so add __init
to this method too.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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arch/sparc/include/asm/atomic_32.h is not exported to userspace.
So there is no need to protect code using __KERNEL__.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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atomic24 support was used to semaphores in the past - but is no longer used.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
igmp: Avoid zero delay when receiving odd mixture of IGMP queries
netdev: make net_device_ops const
bcm63xx: make ethtool_ops const
usbnet: make ethtool_ops const
net: Fix build with INET disabled.
net: introduce netif_addr_lock_nested() and call if when appropriate
net: correct lock name in dev_[uc/mc]_sync documentations.
net: sk_update_clone is only used in net/core/sock.c
8139cp: fix missing napi_gro_flush.
pktgen: set correct max and min in pktgen_setup_inject()
smsc911x: Unconditionally include linux/smscphy.h in smsc911x.h
asix: fix infinite loop in rx_fixup()
net: Default UDP and UNIX diag to 'n'.
r6040: fix typo in use of MCR0 register bits
net: fix sock_clone reference mismatch with tcp memcontrol
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Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP
behavior on v3 query during v2-compatibility mode') added yet another
case for query parsing, which can result in max_delay = 0. Substitute
a value of 1, as in the usual v3 case.
Reported-by: Simon McVittie <smcv@debian.org>
References: http://bugs.debian.org/654876
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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More drivers where net_device_ops should be const.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ethtool_ops table of function pointers should be const.
Fix all the usb network drivers.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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> net/core/sock.c: In function 'sk_update_clone':
> net/core/sock.c:1278:3: error: implicit declaration of function 'sock_update_memcg'
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_uc_sync() and dev_mc_sync() are acquiring netif_addr_lock for
destination device of synchronization. Since netif_addr_lock is
already held at the time for source device, this triggers lockdep
deadlock warning.
There's no way this deadlock can happen so use spin_lock_nested() to
silence the warning.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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so move it there. Fixes build errors when CONFIG_INET is not defined:
In file included from include/linux/tcp.h:211:0,
from include/linux/ipv6.h:221,
from include/net/ipv6.h:16,
from include/linux/sunrpc/clnt.h:26,
from include/linux/nfs_fs.h:50,
from init/do_mounts.c:20:
include/net/sock.h: In function 'sk_update_clone':
include/net/sock.h:1109:3: error: implicit declaration of function 'sock_update_memcg' [-Werror=implicit-function-declaration]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver uses __napi_complete and napi_gro_receive. Without it, the
driver hits the BUG_ON(n->gro_list) assertion hard in __napi_complete.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Marin Glibic <zhilla2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In 882716604ec "pktgen: fix multiple queue warning" we added special
logic to handle the case where ntxq is zero. It's not clear to me that
ntxq can actually be zero. But if it were then we would set
->queue_map_min and ->queue_map_max to USHRT_MAX when probably we want
to set them to zero?
Signed-off-by: David S. Miller <davem@davemloft.net>
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The energy detect enable/disable code in the driver uses some
register defines in this header unconditionally, so guarding
the smscphy.h header include with CONFIG_SMSC_PHY leads to
build failures in some configurations.
Reported-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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At this point if skb->len happens to be 2, the subsequant skb_pull(skb, 4)
call won't work and the skb->len won't be decreased and won't ever reach 0,
resulting in an infinite loop.
With an ASIX 88772 under heavy load, without this patch, rx_fixup() reaches
an infinite loop in less than a minute. With this patch applied,
no infinite loop even after hours of heavy load.
Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 4e16d6ebd65b4f2c4e3f780b4c5704beef64019c (r6040: define more MCR0
register bits) added #define values for MCR0 register bits and converted
uses of hardcoded magic values to uses of these defines.
However, one of the conversions looks suspicious:
#define MCR0 0x00 /* Control register 0 */
+#define MCR0_RCVEN 0x0002 /* Receive enable */
+#define MCR0_XMTEN 0x1000 /* Transmission enable */
/* Init RDC private data */
- lp->mcr0 = 0x1002;
+ lp->mcr0 = MCR0_XMTEN | MCR0;
I believe what was meant here was MCR0_XMTEN | MCR0_RCVEN, which makes
sense and matches the original values.
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sockets can also be created through sock_clone. Because it copies
all data in the sock structure, it also copies the memcg-related pointer,
and all should be fine. However, since we now use reference counts in
socket creation, we are left with some sockets that have no reference
counts. It matters when we destroy them, since it leads to a mismatch.
Signed-off-by: Glauber Costa <glommer@parallels.com>
CC: David S. Miller <davem@davemloft.net>
CC: Greg Thelen <gthelen@google.com>
CC: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com>
CC: Laurent Chavey <chavey@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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clock management changes for i.MX
Another simple series related to clock management, this time only for
imx.
* tag 'clk' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: mxs: select HAVE_CLK_PREPARE for clock
clk: add config option HAVE_CLK_PREPARE into Kconfig
ASoC: mxs-saif: convert to clk_prepare/clk_unprepare
video: mxsfb: convert to clk_prepare/clk_unprepare
serial: mxs-auart: convert to clk_prepare/clk_unprepare
net: flexcan: convert to clk_prepare/clk_unprepare
mtd: gpmi-lib: convert to clk_prepare/clk_unprepare
mmc: mxs-mmc: convert to clk_prepare/clk_unprepare
dma: mxs-dma: convert to clk_prepare/clk_unprepare
net: fec: add clk_prepare/clk_unprepare
ARM: mxs: convert platform code to clk_prepare/clk_unprepare
clk: add helper functions clk_prepare_enable and clk_disable_unprepare
Fix up trivial conflicts in drivers/net/ethernet/freescale/fec.c due to
commit 0ebafefcaa7a ("net: fec: add clk_prepare/clk_unprepare") clashing
trivially with commit e163cc97f9ac ("net/fec: fix the .remove code").
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* imx/clk:
ARM: mxs: select HAVE_CLK_PREPARE for clock
clk: add config option HAVE_CLK_PREPARE into Kconfig
ASoC: mxs-saif: convert to clk_prepare/clk_unprepare
video: mxsfb: convert to clk_prepare/clk_unprepare
serial: mxs-auart: convert to clk_prepare/clk_unprepare
net: flexcan: convert to clk_prepare/clk_unprepare
mtd: gpmi-lib: convert to clk_prepare/clk_unprepare
mmc: mxs-mmc: convert to clk_prepare/clk_unprepare
dma: mxs-dma: convert to clk_prepare/clk_unprepare
net: fec: add clk_prepare/clk_unprepare
ARM: mxs: convert platform code to clk_prepare/clk_unprepare
clk: add helper functions clk_prepare_enable and clk_disable_unprepare
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git://git.linaro.org/people/shawnguo/linux-2.6 into imx/clk
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This patch adds clk_prepare/clk_unprepare for mxs clock api by
renaming the existing non-atomic clk_enable/clk_disable to
clk_prepare/clk_unprepare and adding a pair of dummy
clk_enable/clk_disable. Then with selecting HAVE_CLK_PREPARE for
mxs clock, we can fix the mutex locking warning that has been
reported for a few times.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
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The commit 40d3e0f (clk: provide prepare/unprepare functions) provides
the config option HAVE_CLK_PREPARE for platforms that have
prepare/unprepare implementation to select. This patch adds the option
into drivers/clk/Kconfig, so that it can be actually selected.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
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The patch converts mxs-saif driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Dong Aisheng <b29396@freescale.com>
Cc: Liam Girdwood <lrg@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
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The patch converts mxsfb driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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The patch converts mxs-auart driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Alan Cox <alan@linux.intel.com>
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The patch converts flexcan driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: David S. Miller <davem@davemloft.net>
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The patch converts gpmi nand driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Huang Shijie <b32955@freescale.com>
Cc: Artem Bityutskiy <artem.bityutskiy@intel.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
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The patch converts mxs-mmc driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
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The patch converts mxs-dma driver to clk_prepare/clk_unprepare by
using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
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It's for migrating to generic clk framework API.
Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
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The patch converts mxs platform code to clk_prepare/clk_unprepare
by using helper functions clk_prepare_enable/clk_disable_unprepare.
Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
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It's for migrating to generic clk framework API.
The helper functions help cases clk_enable/clk_disable is used
in non-atomic context.
For example, Call clk_enable in probe and clk_disable in remove.
Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
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timer changes for msm
A very simple series. We used to have more churn in the timer
area, so this is kept separate. Will probably put this into the
drivers series next time.
* tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
msm: timer: Use clockevents_config_and_register()
msm: timer: Setup interrupt after registering clockevent
msm: timer: Remove SoC specific #ifdefs
msm: timer: Remove msm_clocks[] and simplify code
msm: timer: Fix ONESHOT mode interrupts
msm: timer: Use GPT for clockevents and DGT for clocksource
msm: timer: Cleanup #includes and #defines
msm: timer: Tighten #ifdef for local timer support
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Don't open code the min/max delta logic. Use the generic
version instead. Also expand the number of bits we can handle
because there isn't anything that says we can't handle all 32
bits.
Before:
max_delta_ns: 122880426391799
min_delta_ns: 122070
mult: 140737
shift: 32
After:
max_delta_ns: 131071523464981
min_delta_ns: 122069
mult: 70369
shift: 31
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
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