#ifndef __ASM_GENERIC_IRQFLAGS_H #define __ASM_GENERIC_IRQFLAGS_H /* * All architectures should implement at least the first two functions, * usually inline assembly will be the best way. */ #ifndef ARCH_IRQ_DISABLED #define ARCH_IRQ_DISABLED 0 #define ARCH_IRQ_ENABLED 1 #endif /* read interrupt enabled status */ #ifndef arch_local_save_flags unsigned long arch_local_save_flags(void); #endif /* set interrupt enabled status */ #ifndef arch_local_irq_restore void arch_local_irq_restore(unsigned long flags); #endif /* get status and disable interrupts */ #ifndef arch_local_irq_save static inline unsigned long arch_local_irq_save(void) { unsigned long flags; flags = arch_local_save_flags(); arch_local_irq_restore(ARCH_IRQ_DISABLED); return flags; } #endif /* test flags */ #ifndef arch_irqs_disabled_flags static inline int arch_irqs_disabled_flags(unsigned long flags) { return flags == ARCH_IRQ_DISABLED; } #endif /* unconditionally enable interrupts */ #ifndef arch_local_irq_enable static inline void arch_local_irq_enable(void) { arch_local_irq_restore(ARCH_IRQ_ENABLED); } #endif /* unconditionally disable interrupts */ #ifndef arch_local_irq_disable static inline void arch_local_irq_disable(void) { arch_local_irq_restore(ARCH_IRQ_DISABLED); } #endif /* test hardware interrupt enable bit */ #ifndef arch_irqs_disabled static inline int arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } #endif #endif /* __ASM_GENERIC_IRQFLAGS_H */ '>Tobias Klauser
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authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /include/scsi/libfc.h
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'include/scsi/libfc.h')
t/commit/include?h=nds-private-remove&id=71810db27c1c853b335675bee335d893bc3d324b'>modversions: treat symbol CRCs as 32 bit quantities
Ard Biesheuvel3-12/+27
2017-02-03ipv6: sr: remove cleanup flag and fix HMAC computationDavid Lebrun1-6/+3
2017-02-02Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ke...Linus Torvalds1-3/+0
2017-02-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds4-19/+26
2017-02-01Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vir...Linus Torvalds1-0/+1
2017-02-01net: fix ndo_features_check/ndo_fix_features comment orderingDimitris Michailidis1-14/+15
2017-02-01perf/x86/intel/uncore: Make package handling more robustThomas Gleixner1-2/+0