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* docs: alphabetize entries in kernel-parameters.txtRandy Dunlap2009-04-061-255/+226
| | | | | | | | | | | | Move entries to be in alpha order as specified near the beginning of this file. Clean up some whitespace and line-length miscues. Add '=' to "selinux" option syntax. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* docbook: fix fatal filename errorRandy Dunlap2009-04-061-1/+1
| | | | | | | | | Fix docbook fatal error: docproc: block/blktrace.c: No such file or directory Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kernel/sysctl.c: avoid annoying warningsLinus Torvalds2009-04-061-2/+2
| | | | | | | | | Some of the limit constants are used only depending on some complex configuration dependencies, yet it's not worth making the simple variables depend on those configuration details. Just mark them as perhaps not being unused, and avoid the warning. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'locking-for-linus' of ↵Linus Torvalds2009-04-066-25/+57
|\ | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: add stack dumps to asserts hrtimer: fix rq->lock inversion (again)
| * lockdep: add stack dumps to assertsPeter Zijlstra2009-03-311-0/+5
| | | | | | | | | | | | | | | | | | | | Have a better idea about exactly which loc causes a lockdep limit overflow. Often it's a bug or inefficiency in that subsystem. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1237376327.5069.253.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * hrtimer: fix rq->lock inversion (again)Peter Zijlstra2009-03-315-25/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It appears I inadvertly introduced rq->lock recursion to the hrtimer_start() path when I delegated running already expired timers to softirq context. This patch fixes it by introducing a __hrtimer_start_range_ns() method that will not use raise_softirq_irqoff() but __raise_softirq_irqoff() which avoids the wakeup. It then also changes schedule() to check for pending softirqs and do the wakeup then, I'm not quite sure I like this last bit, nor am I convinced its really needed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org LKML-Reference: <20090313112301.096138802@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'kmemtrace-for-linus' of ↵Linus Torvalds2009-04-0629-336/+493
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kmemtrace: trace kfree() calls with NULL or zero-length objects kmemtrace: small cleanups kmemtrace: restore original tracing data binary format, improve ABI kmemtrace: kmemtrace_alloc() must fill type_id kmemtrace: use tracepoints kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ tracepoints kmemtrace, rcu: fix rcupreempt.c data structure dependencies kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.c kmemtrace, squashfs: fix slab.h dependency problem in squasfs kmemtrace, befs: fix slab.h dependency problem kmemtrace, security: fix linux/key.h header file dependencies kmemtrace, fs: fix linux/fdtable.h header file dependencies kmemtrace, fs: uninline simple_transaction_set() kmemtrace, fs, security: move alloc_secdata() and free_secdata() to linux/security.h
| * | kmemtrace: trace kfree() calls with NULL or zero-length objectsPekka Enberg2009-04-033-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: also output kfree(NULL) entries This patch moves the trace_kfree() calls before the ZERO_OR_NULL_PTR check so that we can trace call-sites that call kfree() with NULL many times which might be an indication of a bug. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237971957.30175.18.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace: small cleanupsIngo Molnar2009-04-031-61/+67
| | | | | | | | | | | | | | | | | | Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <161be9ca8a27b432c4a6ab79f47788c4521652ae.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace: restore original tracing data binary format, improve ABIEduard - Gabriel Munteanu2009-04-031-24/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When kmemtrace was ported to ftrace, the marker strings were taken as an indication of how the traced data was being exposed to the userspace. However, the actual format had been binary, not text. This restores the original binary format, while also adding an origin CPU field (since ftrace doesn't expose the data per-CPU to userspace), and re-adding the timestamp field. It also drops arch-independent field sizing where it didn't make sense, so pointers won't always be 64 bits wide like they used to. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <161be9ca8a27b432c4a6ab79f47788c4521652ae.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace: kmemtrace_alloc() must fill type_idEduard - Gabriel Munteanu2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix trace output kmemtrace_alloc() was not filling type_id, which allowed garbage to make it into tracing data. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <284dba2732a144849d5aa82258fe0de2ad8dcb0b.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace: use tracepointsEduard - Gabriel Munteanu2009-04-039-173/+251
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kmemtrace now uses tracepoints instead of markers. We no longer need to use format specifiers to pass arguments. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> [ folded: Use the new TP_PROTO and TP_ARGS to fix the build. ] [ folded: fix build when CONFIG_KMEMTRACE is disabled. ] [ folded: define tracepoints when CONFIG_TRACEPOINTS is enabled. ] Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <ae61c0f37156db8ec8dc0d5778018edde60a92e3.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ ↵Eduard - Gabriel Munteanu2009-04-034-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tracepoints Impact: cleanup linux/percpu.h includes linux/slab.h, which generates circular inclusion dependencies when trying to switch kmemtrace to use tracepoints instead of markers. This patch allows tracing within slab headers' inline functions. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, rcu: fix rcupreempt.c data structure dependenciesIngo Molnar2009-04-032-46/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupreempt.h, but if we do that the percpu primitives there wont build anymore. Move them to the .c file instead. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, rcu: fix rcu_tree_trace.c data structure dependenciesIngo Molnar2009-04-033-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove rcutree internals from the public rcutree.h file for upcoming kmemtrace changes - but kernel/rcutree_trace.c depends on them. Introduce kernel/rcutree.h for internal definitions. (Probably all the other data types from include/linux/rcutree.h could be moved here too - except rcu_data.) Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependenciesIngo Molnar2009-04-034-43/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix for all non-x86 architectures We want to remove percpu.h from rcuclassic.h/rcutree.h (for upcoming kmemtrace changes) but that would break the DECLARE_PER_CPU based declarations in these files. Move the quiescent counter management functions to their respective RCU implementation .c files - they were slightly above the inlining limit anyway. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, mm: fix slab.h dependency problem in mm/failslab.cPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup mm/failslab.c depends on slab.h without including it: CC mm/failslab.o mm/failslab.c: In function ‘should_failslab’: mm/failslab.c:16: error: ‘__GFP_NOFAIL’ undeclared (first use in this function) mm/failslab.c:16: error: (Each undeclared identifier is reported only once mm/failslab.c:16: error: for each function it appears in.) mm/failslab.c:19: error: ‘__GFP_WAIT’ undeclared (first use in this function) make[1]: *** [mm/failslab.o] Error 1 make: *** [mm] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237888761.25315.69.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.cPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup lib/decompress_unlzma.c depends on slab.h without including it: CC lib/decompress_unlzma.o lib/decompress_unlzma.c: In function ‘rc_free’: lib/decompress_unlzma.c:122: error: implicit declaration of function ‘kfree’ lib/decompress_unlzma.c: In function ‘unlzma’: lib/decompress_unlzma.c:551: error: implicit declaration of function ‘kmalloc’ lib/decompress_unlzma.c:551: warning: assignment makes pointer from integer without a cast make[1]: *** [lib/decompress_unlzma.o] Error 1 make: *** [lib/] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237886521.25315.58.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.cPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup lib/decompress_bunzip2.c depends on slab.h without including it: CC lib/decompress_bunzip2.o lib/decompress_bunzip2.c: In function ‘start_bunzip’: lib/decompress_bunzip2.c:636: error: implicit declaration of function ‘kmalloc’ lib/decompress_bunzip2.c:636: warning: assignment makes pointer from integer without a cast lib/decompress_bunzip2.c: In function ‘bunzip2’: lib/decompress_bunzip2.c:682: warning: assignment makes pointer from integer without a cast lib/decompress_bunzip2.c:693: warning: assignment makes pointer from integer without a cast lib/decompress_bunzip2.c:726: error: implicit declaration of function ‘kfree’ make[1]: *** [lib/decompress_bunzip2.o] Error 1 make: *** [lib/] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237886032.25315.48.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.cPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix build lib/decompress_inflate.c depends on slab.h without including it: CC lib/decompress_inflate.o lib/decompress_inflate.c: In function ‘gunzip’: lib/decompress_inflate.c:45: error: implicit declaration of function ‘kmalloc’ lib/decompress_inflate.c:45: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:57: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:65: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:71: warning: assignment makes pointer from integer without a cast lib/decompress_inflate.c:154: error: implicit declaration of function ‘kfree’ make[1]: *** [lib/decompress_inflate.o] Error 1 make: *** [lib/] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237886030.25315.47.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, squashfs: fix slab.h dependency problem in squasfsPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup fs/squashfs/export.c depends on slab.h without including it: CC fs/squashfs/export.o fs/squashfs/export.c: In function ‘squashfs_read_inode_lookup_table’: fs/squashfs/export.c:133: error: implicit declaration of function ‘kmalloc’ fs/squashfs/export.c:133: warning: assignment makes pointer from integer without a cast fs/squashfs/export.c:143: error: implicit declaration of function ‘kfree’ make[1]: *** [fs/squashfs/export.o] Error 1 make: *** [fs/squashfs/] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237884999.25315.41.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, befs: fix slab.h dependency problemPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup fs/befs/debug.c depends on slab.h without including it. Upcoming changes for kmemtrace would break the build: CC fs/befs/debug.o fs/befs/debug.c: In function ‘befs_error’: fs/befs/debug.c:31: error: implicit declaration of function ‘kmalloc’ fs/befs/debug.c:31: warning: initialization makes pointer from integer without a cast fs/befs/debug.c:42: error: implicit declaration of function ‘kfree’ fs/befs/debug.c: In function ‘befs_warning’: fs/befs/debug.c:49: warning: initialization makes pointer from integer without a cast fs/befs/debug.c: In function ‘befs_debug’: fs/befs/debug.c:73: warning: assignment makes pointer from integer without a cast make[1]: *** [fs/befs/debug.o] Error 1 make: *** [fs/befs/] Error 2 So add the dependency explicitly. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237884230.25315.33.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, security: fix linux/key.h header file dependenciesPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because key.h has an implicit include file dependency on rwsem.h: CC [M] fs/cifs/cifs_spnego.o In file included from include/keys/user-type.h:15, from fs/cifs/cifs_spnego.c:24: include/linux/key.h:128: error: field ‘sem’ has incomplete type make[2]: *** [fs/cifs/cifs_spnego.o] Error 1 make[1]: *** [fs/cifs] Error 2 make: *** [fs] Error 2 Fix it by making the dependency explicit. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237884886.25315.39.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, fs: fix linux/fdtable.h header file dependenciesIngo Molnar2009-04-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fdtable.h has an implicit include file dependency: it uses __init does not include init.h. This can cause build failures on non-x86 architectures: /home/mingo/tip/include/linux/fdtable.h:66: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'files_defer_init' make[2]: *** [fs/locks.o] Error 1 We got this header included indirectly via rcupdate.h's percpu.h inclusion - but if that is not there the build will break. Fix it. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, fs: uninline simple_transaction_set()Ingo Molnar2009-04-032-13/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fs.h has an implicit include file depedency: it uses PAGE_SIZE but does not include asm/page.h which defines it. This problem gets masked in practice because most fs.h using sites use rcupreempt.h (and other headers) which includes percpu.h which brings in asm/page.h indirectly. We cannot add asm/page.h to asm/fs.h because page.h is not an exported header. Move simple_transaction_set() to the other simple-transaction file helpers in fs/libfs.c. This removes the include file hell and also reduces kernel size a bit. Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kmemtrace, fs, security: move alloc_secdata() and free_secdata() to ↵Pekka Enberg2009-04-032-21/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linux/security.h Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fs.h has implicit include file depedencies: it uses GFP_* types in inlines but does not include gfp.h. In practice most fs.h using .c files get gfp.h included implicitly, via an indirect route: via rcupdate.h inclusion - so this underlying problem gets masked in practice. So we want to solve fs.h's dependency on gfp.h. gfp.h can not be included here directly because it is not exported and it would break the build the following way: /home/mingo/tip/usr/include/linux/bsg.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h> /home/mingo/tip/usr/include/linux/fs.h:11: included file 'linux/gfp.h' is not exported make[3]: *** [/home/mingo/tip/usr/include/linux/.check] Error 1 make[2]: *** [linux] Error 2 As suggested by Alexey Dobriyan, move alloc_secdata() and free_secdata() to linux/security.h - they belong there. This also cleans fs.h of GFP_* usage. Suggested-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237906803.25315.96.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2009-04-0629-555/+2997
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.30' of git://linux-nfs.org/~bfields/linux: (81 commits) nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4 nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drc nfsd41: Documentation/filesystems/nfs41-server.txt nfsd41: CREATE_EXCLUSIVE4_1 nfsd41: SUPPATTR_EXCLCREAT attribute nfsd41: support for 3-word long attribute bitmask nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verify nfsd41: pass writable attrs mask to nfsd4_decode_fattr nfsd41: provide support for minor version 1 at rpc level nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap nfsd41: access_valid nfsd41: clientid handling nfsd41: check encode size for sessions maxresponse cached nfsd41: stateid handling nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_op nfsd41: destroy_session operation nfsd41: non-page DRC for solo sequence responses nfsd41: Add a create session replay cache nfsd41: create_session operation ...
| * | | nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4Benny Halevy2009-04-061-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes following modpost error: ERROR: "nfsd4_set_statp" [fs/nfsd/nfsd.ko] undefined! Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drcBenny Halevy2009-04-062-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following compiler error: fs/nfsd/nfssvc.c: In function 'set_max_drc': fs/nfsd/nfssvc.c:240: error: 'NFSD_DRC_SIZE_SHIFT' undeclared CONFIG_NFSD_V4 is not set Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: Documentation/filesystems/nfs41-server.txtBenny Halevy2009-04-041-0/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initial nfs41 server write up describing the status of the linux server implementation. [nfsd41: document unenforced nfs41 compound ordering rules.] [get rid of CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: CREATE_EXCLUSIVE4_1Benny Halevy2009-04-044-7/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the CREATE_EXCLUSIVE4_1 open mode conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 This mode allows the client to atomically create a file if it doesn't exist while setting some of its attributes. It must be implemented if the server supports persistent reply cache and/or pnfs. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: SUPPATTR_EXCLCREAT attributeBenny Halevy2009-04-043-2/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Return bitmask for supported EXCLUSIVE4_1 create attributes. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: support for 3-word long attribute bitmaskAndy Adamson2009-04-044-26/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, use client minorversion to generate supported attrs Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verifyBenny Halevy2009-04-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | _nfsd4_verify currently skips 3 words from the encoded buffer begining. With support for 3-word attr bitmaps in nfsd41, nfsd4_encode_fattr may encode 1, 2, or 3 words, and not always 2 as it used to be, hence we need to find out where to skip using the encoded bitmap length. Note: This patch may be applied over pre-nfsd41 nfsd. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: pass writable attrs mask to nfsd4_decode_fattrBenny Halevy2009-04-041-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for EXCLUSIVE4_1 Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: provide support for minor version 1 at rpc levelMarc Eshel2009-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versionsBenny Halevy2009-04-044-4/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support enabling and disabling nfsv4.1 via /proc/fs/nfsd/versions by writing the strings "+4.1" or "-4.1" correspondingly. Use user mode nfs-utils (rpc.nfsd option) to enable. This will allow us to get rid of CONFIG_NFSD_V4_1 [nfsd41: disable support for minorversion by default] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmapAndy Adamson2009-04-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate the access bits from the want bits and enable __set_bit to work correctly with st_access_bmap. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: access_validAndy Adamson2009-04-043-5/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For nfs41, the open share flags are used also for delegation "wants" and "signals". Check that they are valid. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: clientid handlingAndy Adamson2009-04-043-6/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extract the clientid from sessionid to set the op_clientid on open. Verify that the clid for other stateful ops is zero for minorversion != 0 Do all other checks for stateful ops without sessions. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> [fixed whitespace indent] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 remove sl_session from nfsd4_open] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: check encode size for sessions maxresponse cachedAndy Adamson2009-04-041-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calculate the space the compound response has taken after encoding the current operation. pad: add on 8 bytes for the next operation's op_code and status so that there is room to cache a failure on the next operation. Compare this length to the session se_fmaxresp_cached and return nfserr_rep_too_big_to_cache if the length is too large. Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so will be at least a page and will therefore hold the xdr_buf head. Signed-off-by: Andy Adamson <andros@netapp.com> [nfsd41: non-page DRC for solo sequence responses] [fixed nfsd4_check_drc_limit cosmetics] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use cstate session in nfsd4_check_drc_limit] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: stateid handlingAndy Adamson2009-04-045-11/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When sessions are used, stateful operation sequenceid and stateid handling are not used. When sessions are used, on the first open set the seqid to 1, mark state confirmed and skip seqid processing. When sessionas are used the stateid generation number is ignored when it is zero whereas without sessions bad_stateid or stale stateid is returned. Add flags to propagate session use to all stateful ops and down to check_stateid_generation. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> [nfsd4_has_session should return a boolean, not u32] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: pass nfsd4_compoundres * to nfsd4_process_open1] [nfsd41: calculate HAS_SESSION in nfs4_preprocess_stateid_op] [nfsd41: calculate HAS_SESSION in nfs4_preprocess_seqid_op] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_opBenny Halevy2009-04-043-15/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we only use cstate->current_fh, will also be used by nfsd41 code. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: destroy_session operationBenny Halevy2009-04-043-4/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the destory_session operation confoming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 [use sessionid_lock spin lock] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: non-page DRC for solo sequence responsesAndy Adamson2009-04-045-11/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A session inactivity time compound (lease renewal) or a compound where the sequence operation has sa_cachethis set to FALSE do not require any pages to be held in the v4.1 DRC. This is because struct nfsd4_slot is already caching the session information. Add logic to the nfs41 server to not cache response pages for solo sequence responses. Return nfserr_replay_uncached_rep on the operation following the sequence operation when sa_cachethis is FALSE. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use cstate session in nfsd4_replay_cache_entry] [nfsd41: rename nfsd4_no_page_in_cache] [nfsd41 rename nfsd4_enc_no_page_replay] [nfsd41 nfsd4_is_solo_sequence] [nfsd41 change nfsd4_not_cached return] Signed-off-by: Andy Adamson <andros@netapp.com> [changed return type to bool] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 drop parens in nfsd4_is_solo_sequence call] Signed-off-by: Andy Adamson <andros@netapp.com> [changed "== 0" to "!"] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: Add a create session replay cacheAndy Adamson2009-04-042-13/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the nfs4_client cl_seqid field with a single struct nfs41_slot used for the create session replay cache. The CREATE_SESSION slot sets the sl_session pointer to NULL. Otherwise, the slot and it's replay cache are used just like the session slots. Fix unconfirmed create_session replay response by initializing the create_session slot sequence id to 0. A future patch will set the CREATE_SESSION cache when a SEQUENCE operation preceeds the CREATE_SESSION operation. This compound is currently only cached in the session slot table. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: revert portion of nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netpp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: create_session operationAndy Adamson2009-04-044-6/+358
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the create_session operation confoming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Look up the client id (generated by the server on exchange_id, given by the client on create_session). If neither a confirmed or unconfirmed client is found then the client id is stale If a confirmed cilent is found (i.e. we already received create_session for it) then compare the sequence id to determine if it's a replay or possibly a mis-ordered rpc. If the seqid is in order, update the confirmed client seqid and procedd with updating the session parameters. If an unconfirmed client_id is found then verify the creds and seqid. If both match move the client id to confirmed state and proceed with processing the create_session. Currently, we do not support persistent sessions, and RDMA. alloc_init_session generates a new sessionid and creates a session structure. NFSD_PAGES_PER_SLOT is used for the max response cached calculation, and for the counting of DRC pages using the hard limits set in struct srv_serv. A note on NFSD_PAGES_PER_SLOT: Other patches in this series allow for NFSD_PAGES_PER_SLOT + 1 pages to be cached in a DRC slot when the response size is less than NFSD_PAGES_PER_SLOT * PAGE_SIZE but xdr_buf pages are used. e.g. a READDIR operation will encode a small amount of data in the xdr_buf head, and then the READDIR in the xdr_buf pages. So, the hard limit calculation use of pages by a session is underestimated by the number of cached operations using the xdr_buf pages. Yet another patch caches no pages for the solo sequence operation, or any compound where cache_this is False. So the hard limit calculation use of pages by a session is overestimated by the number of these operations in the cache. TODO: improve resource pre-allocation and negotiate session parameters accordingly. Respect and possibly adjust backchannel attributes. Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> [nfsd41: remove headerpadsz from channel attributes] Our client and server only support a headerpadsz of 0. [nfsd41: use DRC limits in fore channel init] [nfsd41: do not change CREATE_SESSION back channel attrs] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [use sessionid_lock spin lock] [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 remove sl_session from alloc_init_session] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [simplify nfsd4_encode_create_session error handling] [nfsd41: fix comment style in init_forechannel_attrs] [nfsd41: allocate struct nfsd4_session and slot table in one piece] [nfsd41: no need to INIT_LIST_HEAD in alloc_init_session just prior to list_add] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: clear DRC cache on free_sessionAndy Adamson2009-04-041-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: nfsd DRC logicAndy Adamson2009-04-044-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replay a request in nfsd4_sequence. Add a minorversion to struct nfsd4_compound_state. Pass the current slot to nfs4svc_encode_compound res via struct nfsd4_compoundres to set an NFSv4.1 DRC entry. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use cstate session in nfs4svc_encode_compoundres] [nfsd41 replace nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | nfsd41: hard page limit for DRCAndy Adamson2009-04-043-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use no more than 1/128th of the number of free pages at nfsd startup for the v4.1 DRC. This is an arbitrary default which should probably end up under the control of an administrator. Signed-off-by: Andy Adamson <andros@netapp.com> [moved added fields in struct svc_serv under CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [fix set_max_drc calculation of sv_drc_max_pages] [moved NFSD_DRC_SIZE_SHIFT's declaration up in header file] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 18:42:20 +0100