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* [PATCH] VM: early zone reclaimMartin Hicks2005-06-229-8/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the core of the (much simplified) early reclaim. The goal of this patch is to reclaim some easily-freed pages from a zone before falling back onto another zone. One of the major uses of this is NUMA machines. With the default allocator behavior the allocator would look for memory in another zone, which might be off-node, before trying to reclaim from the current zone. This adds a zone tuneable to enable early zone reclaim. It is selected on a per-zone basis and is turned on/off via syscall. Adding some extra throttling on the reclaim was also required (patch 4/4). Without the machine would grind to a crawl when doing a "make -j" kernel build. Even with this patch the System Time is higher on average, but it seems tolerable. Here are some numbers for kernbench runs on a 2-node, 4cpu, 8Gig RAM Altix in the "make -j" run: wall user sys %cpu ctx sw. sleeps ---- ---- --- ---- ------ ------ No patch 1009 1384 847 258 298170 504402 w/patch, no reclaim 880 1376 667 288 254064 396745 w/patch & reclaim 1079 1385 926 252 291625 548873 These numbers are the average of 2 runs of 3 "make -j" runs done right after system boot. Run-to-run variability for "make -j" is huge, so these numbers aren't terribly useful except to seee that with reclaim the benchmark still finishes in a reasonable amount of time. I also looked at the NUMA hit/miss stats for the "make -j" runs and the reclaim doesn't make any difference when the machine is thrashing away. Doing a "make -j8" on a single node that is filled with page cache pages takes 700 seconds with reclaim turned on and 735 seconds without reclaim (due to remote memory accesses). The simple zone_reclaim syscall program is at http://www.bork.org/~mort/sgi/zone_reclaim.c Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] VM: add may_swap flag to scan_controlMartin Hicks2005-06-221-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here's the next round of these patches. These are totally different in an attempt to meet the "simpler" request after the last patches. For reference the earlier threads are: http://marc.theaimsgroup.com/?l=linux-kernel&m=110839604924587&w=2 http://marc.theaimsgroup.com/?l=linux-mm&m=111461480721249&w=2 This set of patches replaces my other vm- patches that are currently in -mm. So they're against 2.6.12-rc5-mm1 about half way through the -mm patchset. As I said already this patch is a lot simpler. The reclaim is turned on or off on a per-zone basis using a syscall. I haven't tested the x86 syscall, so it might be wrong. It uses the existing reclaim/pageout code with the small addition of a may_swap flag to scan_control (patch 1/4). I also added __GFP_NORECLAIM (patch 3/4) so that certain allocation types can be flagged to never cause reclaim. This was a deficiency that was in all of my earlier patch sets. Previously, doing a big buffered read would fill one zone with page cache and then start to reclaim from that same zone, leaving the other zones untouched. Adding some extra throttling on the reclaim was also required (patch 4/4). Without the machine would grind to a crawl when doing a "make -j" kernel build. Even with this patch the System Time is higher on average, but it seems tolerable. Here are some numbers for kernbench runs on a 2-node, 4cpu, 8Gig RAM Altix in the "make -j" run: wall user sys %cpu ctx sw. sleeps ---- ---- --- ---- ------ ------ No patch 1009 1384 847 258 298170 504402 w/patch, no reclaim 880 1376 667 288 254064 396745 w/patch & reclaim 1079 1385 926 252 291625 548873 These numbers are the average of 2 runs of 3 "make -j" runs done right after system boot. Run-to-run variability for "make -j" is huge, so these numbers aren't terribly useful except to seee that with reclaim the benchmark still finishes in a reasonable amount of time. I also looked at the NUMA hit/miss stats for the "make -j" runs and the reclaim doesn't make any difference when the machine is thrashing away. Doing a "make -j8" on a single node that is filled with page cache pages takes 700 seconds with reclaim turned on and 735 seconds without reclaim (due to remote memory accesses). The simple zone_reclaim syscall program is at http://www.bork.org/~mort/sgi/zone_reclaim.c This patch: This adds an extra switch to the scan_control struct. It simply lets the reclaim code know if its allowed to swap pages out. This was required for a simple per-zone reclaimer. Without this addition pages would be swapped out as soon as a zone ran out of memory and the early reclaim kicked in. Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: add /proc/zoneinfoNikita Danilov2005-06-222-2/+125
| | | | | | | | | Add /proc/zoneinfo file to display information about memory zones. Useful to analyze VM behaviour. Signed-off-by: Nikita Danilov <nikita@clusterfs.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] madvise: merge the mapsPrasanna Meda2005-06-221-29/+51
| | | | | | | | | | | | | This attempts to merge back the split maps. This code is mostly copied from Chrisw's mlock merging from post 2.6.11 trees. The only difference is in munmapped_error handling. Also passed prev to willneed/dontneed, eventhogh they do not handle it now, since I felt it will be cleaner, instead of handling prev in madvise_vma in some cases and in subfunction in some cases. Signed-off-by: Prasanna Meda <pmeda@akamai.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] madvise: do not split the mapsPrasanna Meda2005-06-221-11/+16
| | | | | | | | | | This attempts to avoid splittings when it is not needed, that is when vm_flags are same as new flags. The idea is from the <2.6.11 mlock_fixup and others. This will provide base for the next madvise merging patch. Signed-off-by: Prasanna Meda <pmeda@akamai.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] vmscan: notice slab shrinkingakpm@osdl.org2005-06-221-5/+14
| | | | | | | | | | | | | | | | | | | | | | Fix a problem identified by Andrea Arcangeli <andrea@suse.de> kswapd will set a zone into all_unreclaimable state if it sees that we're not successfully reclaiming LRU pages. But that fails to notice that we're successfully reclaiming slab obects, so we can set all_unreclaimable too soon. So change shrink_slab() to return a success indication if it actually reclaimed some objects, and don't assume that the zone is all_unreclaimable if that is true. This means that we won't enter all_unreclaimable state if we are successfully freeing slab objects but we're not yet actually freeing slab pages, due to internal fragmentation. (hm, this has a shortcoming. We could be successfully freeing ZONE_NORMAL slab objects while being really oom on ZONE_DMA. If that happens then kswapd might burn a lot of CPU. But given that there might be some slab objects in ZONE_DMA, perhaps that is appropriate.) Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] smp_processor_id() cleanupIngo Molnar2005-06-2237-125/+119Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a number of smp_processor_id() cleanup ideas that Arjan van de Ven and I came up with. The previous __smp_processor_id/_smp_processor_id/smp_processor_id API spaghetti was hard to follow both on the implementational and on the usage side. Some of the complexity arose from picking wrong names, some of the complexity comes from the fact that not all architectures defined __smp_processor_id. In the new code, there are two externally visible symbols: - smp_processor_id(): debug variant. - raw_smp_processor_id(): nondebug variant. Replaces all existing uses of _smp_processor_id() and __smp_processor_id(). Defined by every SMP architecture in include/asm-*/smp.h. There is one new internal symbol, dependent on DEBUG_PREEMPT: - debug_smp_processor_id(): internal debug variant, mapped to smp_processor_id(). Also, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new lib/smp_processor_id.c file. All related comments got updated and/or clarified. I have build/boot tested the following 8 .config combinations on x86: {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT} I have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT. (Other architectures are untested, but should work just fine.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: TASK_SIZE fixes for compatibility mode processesSuresh Siddha2005-06-227-30/+25Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Appended patch will setup compatibility mode TASK_SIZE properly. This will fix atleast three known bugs that can be encountered while running compatibility mode apps. a) A malicious 32bit app can have an elf section at 0xffffe000. During exec of this app, we will have a memory leak as insert_vm_struct() is not checking for return value in syscall32_setup_pages() and thus not freeing the vma allocated for the vsyscall page. And instead of exec failing (as it has addresses > TASK_SIZE), we were allowing it to succeed previously. b) With a 32bit app, hugetlb_get_unmapped_area/arch_get_unmapped_area may return addresses beyond 32bits, ultimately causing corruption because of wrap-around and resulting in SEGFAULT, instead of returning ENOMEM. c) 32bit app doing this below mmap will now fail. mmap((void *)(0xFFFFE000UL), 0x10000UL, PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE|MAP_ANON, 0, 0); Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] coverity: idr_get_new_above_int() overrun fixZaur Kambarov2005-06-221-1/+1
| | | | | | | | | | | | | | | | | | | This patch fixes overrun of array pa: 92 struct idr_layer *pa[MAX_LEVEL]; in 98 l = idp->layers; 99 pa[l--] = NULL; by passing idp->layers, set in 202 idp->layers = layers; to function sub_alloc in 203 v = sub_alloc(idp, ptr, &id); Signed-off-by: Zaur Kambarov <zkambarov@coverity.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] coverity: ipmi: avoid overrun of ipmi_interfaces[]Zaur Kambarov2005-06-221-1/+1
| | | | | | | | | | | | | | Fix overrun of static array "ipmi_interfaces" of size 4 at position 4 with index variable "if_num". Definitions involved: 297 #define MAX_IPMI_INTERFACES 4 298 static ipmi_smi_t ipmi_interfaces[MAX_IPMI_INTERFACES]; Signed-off-by: Zaur Kambarov <zkambarov@coverity.com> Cc: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] megaraid build fixbobl2005-06-221-1/+1
| | | | | Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arm: irqs_disabled() type fixAndrew Morton2005-06-221-1/+1
| | | | | | | | | | | kernel/sched.c: In function `__might_sleep': kernel/sched.c:5461: warning: int format, long unsigned int arg (arg 3) We expect irqs_disabled() to return an int (poor man's bool). Acked-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2005-06-222-2/+38
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| * [SPARC64]: Add prefetch support.David S. Miller2005-06-221-0/+34
| | | | | | | | | | | | | | | | | | | | | | The implementation is optimal for UltraSPARC-III and later. It will work, however suboptimally, on UltraSPARC-II and be treated as a NOP on UltraSPARC-I. It is not worth code patching this thing as the highest cost is the code space, and code patching cannot eliminate that. Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC64]: Fix cmsg length checks in Solaris emulation layer.David S. Miller2005-06-221-2/+4
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2005-06-2253-676/+2823
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| * | [IPV4]: Fix fib_trie.c's args to fib_dump_info().David S. Miller2005-06-211-1/+1
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Fix ip6t_LOG sit tunnel loggingPatrick McHardy2005-06-211-35/+19Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sit tunnel logging is currently broken: MAC=01:23:45:67:89:ab->01:23:45:47:89:ac TUNNEL=123.123. 0.123-> 12.123. 6.123 Apart from the broken IP address, MAC addresses are printed differently for sit tunnels than for everything else. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Drop conntrack reference in ip_call_ra_chain()/ip_mr_input()Patrick McHardy2005-06-212-0/+2
| | | | | | | | | | | | | | | | | | | | | Drop reference before handing the packets to raw_rcv() Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Check TCP checksum in ipt_REJECTPatrick McHardy2005-06-211-1/+12
| | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Avoid unncessary checksum validation in UDP connection trackingKeir Fraser2005-06-211-0/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Keir Fraser <Keir.Fraser@xl.cam.ac.uk> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Missing owner-field initialization in ip6table_rawPatrick McHardy2005-06-211-2/+4
| | | | | | | | | | | | | | | | | | | | | I missed this one when fixing up iptable_raw. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: expectation timeouts are compulsoryPhil Oester2005-06-211-9/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since expectation timeouts were made compulsory [1], there is no need to check for them in ip_conntrack_expect_insert. [1] https://lists.netfilter.org/pipermail/netfilter-devel/2005-January/018143.html Signed-off-by: Phil Oester <kernel@linuxace.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Restore netfilter assumptions in IPv6 multicastPatrick McHardy2005-06-211-21/+26
| | | | | | | | | | | | | | | | | | | | | Netfilter assumes that skb->data == skb->nh.ipv6h Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Kill nf_debugPatrick McHardy2005-06-2113-239/+0Star
| | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETFILTER]: Kill lockhelp.hPatrick McHardy2005-06-2123-302/+160Star
| | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV6]: multicast join and miscDavid L Stevens2005-06-212-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a simplified version of the patch to fix a bug in IPv6 multicasting. It: 1) adds existence check & EADDRINUSE error for regular joins 2) adds an exception for EADDRINUSE in the source-specific multicast join (where a prior join is ok) 3) adds a missing/needed read_lock on sock_mc_list; would've raced with destroying the socket on interface down without 4) adds a "leave group" in the (INCLUDE, empty) source filter case. This frees unneeded socket buffer memory, but also prevents an inappropriate interaction among the 8 socket options that mess with this. Some would fail as if in the group when you aren't really. Item #4 had a locking bug in the last version of this patch; rather than removing the idev->lock read lock only, I've simplified it to remove all lock state in the path and treat it as a direct "leave group" call for the (INCLUDE,empty) case it covers. Tested on an MP machine. :-) Much thanks to HoerdtMickael <hoerdt@clarinet.u-strasbg.fr> who reported the original bug. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV6]: V6 route events reported with wrong netlink PID and seq numberJamal Hadi Salim2005-06-217-63/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Essentially netlink at the moment always reports a pid and sequence of 0 always for v6 route activities. To understand the repurcassions of this look at: http://lists.quagga.net/pipermail/quagga-dev/2005-June/003507.html While fixing this, i took the liberty to resolve the outstanding issue of IPV6 routes inserted via ioctls to have the correct pids as well. This patch tries to behave as close as possible to the v4 routes i.e maintains whatever PID the socket issuing the command owns as opposed to the process. That made the patch a little bulky. I have tested against both netlink derived utility to add/del routes as well as ioctl derived one. The Quagga folks have tested against quagga. This fixes the problem and so far hasnt been detected to introduce any new issues. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [IPV4]: Add LC-Trie FIB lookup algorithm.Robert Olsson2005-06-214-1/+2495
| | | | | | | | | | | | | | | Signed-off-by: Robert Olsson <Robert.Olsson@data.slu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [NETLINK]: netlink_callback structure needs 5 args not 4Alexey Kuznetsov2005-06-211-1/+1
| |/ | | | | | | | | | | net/ipv4/tcp_diag.c uses up to ->args[4] Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] devfs: remove devfs from Kconfig preventing it from being builtGreg KH2005-06-221-50/+0Star
| | | | | | | | | | | | | | | | | | | | Here's a much smaller patch to simply disable devfs from the build. If this goes well, and there are no complaints for a few weeks, I'll resend my big "devfs-die-die-die" series of patches that rip the whole thing out of the kernel tree. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge 'for-linus' branch of ↵Linus Torvalds2005-06-2122-201/+100Star
|\ \ | |/ |/| | | rsync://rsync.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6
| * Merge with /home/shaggy/git/linus-clean/Dave Kleikamp2005-06-20566-27459/+31494
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| * | JFS: Fix compiler warning in jfs_logmgr.cDave Kleikamp2005-06-031-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fs/jfs/jfs_logmgr.c: In function `jfs_flush_journal': fs/jfs/jfs_logmgr.c:1632: warning: unused variable `mp' Some debug code in jfs_flush_journal does nothing when CONFIG_JFS_DEBUG is not defined. Place the whole code segment within an ifdef to avoid unnecessary code to be compiled and the warning to be issued. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | JFS: kernel BUG at fs/jfs/jfs_txnmgr.c:859Dave Kleikamp2005-06-021-0/+3
| | | | | | | | | | | | | | | | | | | | | add_missing_indices() must set tlck->type to tlckBTROOT when modifying a root btree root to avoid a trap in txRelease() Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | Merge with /home/shaggy/git/linus-clean/Dave Kleikamp2005-06-02903-16554/+37182
| |\ \ | | | | | | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | | JFS: Remove redundant kfree() NULL pointer checksJesper Juhl2005-05-092-8/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | kfree() can handle a NULL pointer, don't worry about passing it one. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | | Merge with /home/shaggy/git/linus-clean/Dave Kleikamp2005-05-0518-127/+269
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| * \ \ \ Merge with /home/shaggy/git/linus-clean/Dave Kleikamp2005-05-0546-2044/+8700
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| * \ \ \ \ Merge with /home/shaggy/git/linus-clean/Dave Kleikamp2005-05-04113-623/+711
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| * | | | | | JFS: Fix sparse warningDave Kleikamp2005-05-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | | | | | JFS: cleanup - remove unneeded sanity checkDave Kleikamp2005-05-041-9/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | | | | | JFS: fix sparse warnings by moving extern declarations to headersDave Kleikamp2005-05-0418-181/+89Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
* | | | | | | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2005-06-21224-2361/+2987
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| * | | | | | | [PATCH] PCI: fix show_modalias() function due to attribute changeGreg Kroah-Hartman2005-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | | | | | [PATCH] USB: fix show_modalias() function due to attribute changeGreg Kroah-Hartman2005-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | | | | | [PATCH] SYSFS: fix PAGE_SIZE checkJon Smirl2005-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this change I can't set an attribute exactly PAGE_SIZE in length. There is no need for zero termination because the interface uses lengths. From: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | | | | | [PATCH] Driver core: Don't "lose" devices on suspend on failureBenjamin Herrenschmidt2005-06-211-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I think we need this patch or we might "lose" devices to the dpm_irq_off list if a failure occurs during the suspend process. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | | | | | [PATCH] sysfs-iattr: set inode attributesManeesh Soni2005-06-213-8/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o Following patch sets the attributes for newly allocated inodes for sysfs objects. If the object has non-default attributes, inode attributes are set as saved in sysfs_dirent->s_iattr, pointer to struct iattr. Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | | | | | [PATCH] sysfs-iattr: add sysfs_setattrManeesh Soni2005-06-214-0/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o This adds ->i_op->setattr VFS method for sysfs inodes. The changed attribues are saved in the persistent sysfs_dirent structure as a pointer to struct iattr. The struct iattr is allocated only for those sysfs_dirent's for which default attributes are getting changed. Thanks to Jon Smirl for this suggestion. Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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