- 13 Jul, 2009 1 commit
-
-
Vladimir Saveliev authored
Q&A wrt this patch: - A really short guide to how to get up and running with this filesystem. Reiser4 is a file system based on dancing tree algorithms, and is described at http://www.namesys.com. One should be able to get it up and running just like any of the other filesystems supported by Linux. Configure it to be compiled either builtin or as a module. Create reiser4 filesystem with mkfs.reiser4, mount and use it. More detailed info can be found at http://thebsh.namesys.com/snapshots/LATEST/READ.ME. - The direct URL which people use to obtain the mkfs tool for this filesystem. Also fsck and anything else. Reiser4 userland tools can be obtained at ftp://ftp.namesys.com/pub/reiser4progs. ftp://ftp.namesys.com/pub/reiser4progs/README contains detailed instructions on how to compile and install these tools. Also all reiser4 progs have man pages. - Any known shortcomings, caveats, etc. Reiser4 has been tested on i386 yet only. Quota support is not ready yet. Should be ready soon. Reiser4 was tested extensively, and we got to where the mailing list was not able to hit any bugs, but then we told people that, got an order of magnitude increase in users, and they are able to hit bugs that we are working on now. Reiser's Law of Software Engineering: Each order of magnitude increase in users finds more bugs, in a quantity equal to the previous order of magnitude increase in users. Success for software developers is measured by how long the frustration lasts. Only the very core functionality is working. Exotic plugins, an API for multiple operation transactions and accessing multiple small files in one syscall, compression, inheritance, all have been postponed until after the core functionality is shipped. The compression plugin needs a code review before anyone should use it. - A statement on compatibility with reiserfs3 filesytems. To upgrade from reiserfs V3 to V4, use tar, or sponsor us to write a convertfs. - Bear in mind that people will immediately benchmark this filesytem, and first impressions count. Now is your chance to communicate any tuning guidelines, mount options or whatever which you'd like people to understand BEFORE they start publishing benchmark info. Reiser4 is not tuned for fsync/sync/O_SYNC performance yet. If you see results that are much different from those at www.namesys.com/benchmarks.html, let us know. If you see performance characteristics that don't quite make sense, email reiserfs-list@namesys.com, such things are always of interest. reiser4 is not tuned for mmaping and dirtying more than physical ram like IOzone does. This is quite different in its code path from writing and dirtying more than physical ram. There are those who think that what IOZone does is rarely done by real programs, and therefor we should not bother to optimize what it does. All I know is, this month we are not optimized for it. Please consider its space savings when you benchmark it also. [michal.k.k.piotrowski@gmail.com: kill #include "linux/config.h"] [akpm@linux-foundation.org: reiser4_drop_page: don't call remove_from_page_cache] [bunk@stusta.de: fs/reiser4/: possible cleanups] Signed-off-by:Vladimir Saveliev <vs@namesys.com> Signed-off-by:
Hans Reiser <reiser@namesys.com> Signed-off-by:
Edward Shishkin <edward@namesys.com> DESC reiser4: fix for drop-unused-semaphores.patch EDESC Wait for tail conversion completion when acquiring exclusive access by . mmap_unix_file() . setattr_unix_file() . release_unix_file() Update comments. Signed-off-by:
Nate Diller <nate.diller@gmail.com> Cc: Vladimir Saveliev <vs@namesys.com> Cc: Edward Shishkin <edward@namesys.com> DESC reiser4-fix EDESC DESC reiser4: use zero_user_page EDESC Use zero_user_page() instead of open-coding it. Signed-off-by:
Laurent Riffard <laurent.riffard@free.fr> Acked-by:
Jens Axboe <jens.axboe@oracle.com> Acked-by:
Rusty Russell <rusty@rustcorp.com.au> Cc: Vladimir Saveliev <vs@namesys.com> Acked-by:
Dave Hansen <haveblue@us.ibm.com> Cc: Edward Shishkin <edward@namesys.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> DESC reiser4: fix extent2tail EDESC Fixed bug in extent2tail conversion. Bug description: when converting partially converted file (with flag REISER4_PART_MIXED installed) reiser4_cut_tree() starts to cut old metatada from wrong offset. Result is data corruption. Signed-off-by:
Zan Lynx <zlynx@acm.org> Cc: "Vladimir V. Saveliev" <vs@namesys.com> DESC git-block-vs-reiser4 EDESC Hope this is right. Hope you know what you're doing ;) Cc: Vladimir Saveliev <vs@namesys.com> Cc: Edward Shishkin <edward@namesys.com> Cc: Jens Axboe <jens.axboe@oracle.com> DESC reiser4: cryptcompress misc fixups EDESC . Fix a race (reproducible by fsx + sync (1)) between checkin_page_cluster operations: serialize them via special per-inode checkin_mutex (usual i_mutex is not suitable for this purpose, as ->writepages() also calls checkin_page_cluster(); . Add comments for checkin/checkout technique for synchronization of primary and secondary caches with proof of correctness; . Fix missed right neighbor when updating disk clusters by handle_pos_on_leaf() during squalloc (should use upper levels to get expected non-connected neighbor); . Resolve a race between read and truncate (when read finds partially truncated and, hence, unrecoverable disk cluster) via keeping a track of leftmost truncated disk clusters in cryptcompress-specific part of inode; . Introduce size translators and size modulators for common needs; . Update comments; . Rename badly sounding function names; . Fix coding style; . Add my part of credits. Signed-off-by:
Adrian Bunk <bunk@kernel.org> Cc: Edward Shishkin <edward@namesys.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> DESC reiser4: change error code base EDESC Change REISER4_ERROR_CODE_BASE to 10000 to not overlap real errnos Signed-off-by:
Mariusz Kozlowski <m.kozlowski@tuxland.pl> Cc: Edward Shishkin <edward@namesys.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> DESC reiser4: kmalloc + memset conversion to kzalloc EDESC Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> DESC Subject: [PATCH 1/2] remove asm/bitops.h includes EDESC remove asm/bitops.h includes including asm/bitops directly may cause compile errors. don't include it and include linux/bitops instead. next patch will deny including asm header directly. Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by:
Jiri Slaby <jirislaby@gmail.com>
-
- 24 Aug, 2009 3 commits
-
-
James Toy authored
-
Andrew Morton authored
Reported-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
-
Hans Reiser authored
add_to_page_cache_lru to be EXPORT_SYMBOL-ed. [bunk@stusta.de: unexport {,__}remove_from_page_cache] Signed-off-by:Adrian Bunk <bunk@stusta.de> Signed-off-by:
-
- 08 Sep, 2009 1 commit
-
-
Artem Bityutskiy authored
generic implementaion and changes fs-writeback.c:sync_sb_inodes() to call filesystem's sync_inodes if it is defined or generic implementaion otherwise. This new operation allows filesystem to decide itself what to flush. Reiser4 flushes dirty pages on basic of atoms, not of inodes. sync_sb_inodes used to call address space flushing method (writepages) for every dirty inode. For reiser4 it caused having to commit atoms unnecessarily often. This turned into substantial slowdown. Having this method helped to fix that problem. akpm: this patch needs to be chnaged to remove the `sb' arg. Signed-off-by:
Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: Edward Shishkin <edward.shishkin@gmail.com> Signed-off-by:
-
- 24 Aug, 2009 1 commit
-
-
Edward Shishkin authored
"captured" by some atom. However, outside reiser4 context dirty page can not be captured in some cases, as it is accompanied with specific work (jnode creation, etc). Reiser4 recognizes such "anonymous" pages (i.e. pages that were dirtied outside of reiser4) by the tag PAGECACHE_TAG_DIRTY. Pages dirtied inside reiser4 context are not tagged at all: we don't need this. Indeed, once page is dirtied and captured, it is attached to a jnode (a special header to keep a track of transactions). reiser4_set_page_dirty_internal() was the internal reiser4 function that set dirty bit without tagging the page. Having such internal function led to real problems (incorrect task io accounting, etc. because of not updating this internal "friend"). Solution: The following patch adds a core library function that sets a dirty bit without tagging the page. Signed-off-by: Edward Shishkin<edward.shishkin@gmail.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
-
- 04 Jun, 2009 1 commit
-
-
Andrew Morton authored
Cc: David S. Miller <davem@davemloft.net> Cc: Florian Fainelli <florian@openwrt.org> Cc: Julius Volz <juliusv@google.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Simon Horman <horms@verge.net.au> Cc: Takashi Iwai <tiwai@suse.de> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by:
-
- 24 Aug, 2009 1 commit
-
-
Florian Fainelli authored
lib/gcd.c, the latter also implementing the a < b case. Signed-off-by:
Florian Fainelli <florian@openwrt.org> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Takashi Iwai <tiwai@suse.de> Acked-by:
Simon Horman <horms@verge.net.au> Cc: Julius Volz <juliusv@google.com> Cc: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by:
-
- 04 Jun, 2009 1 commit
-
-
Florian Fainelli authored
Signed-off-by:
-
- 24 Aug, 2009 1 commit
-
-
Hiroshi Shimamoto authored
it can be moved from task_struct to mm_struct. And binfmt moudle is handled per mm_struct instead of task_struct. Signed-off-by:
Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Acked-by:
Oleg Nesterov <oleg@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Acked-by:
Roland McGrath <roland@redhat.com> Signed-off-by:
-
- 04 Aug, 2009 1 commit
-
-
Albin Tonnerre authored
for LZO decompression on ARM in a patch that follows), including <linux/kernel.h> causes issues as it brings in a lot of things that are not available in the decompression environment. However, those files apparently use nothing from <linux/kernel.h>, all they need is the declaration of types such as u32 or u64, so <linux/types.h> should be enough Signed-off-by:
Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by:
-
- 25 Jun, 2009 1 commit
-
-
Phillip Lougher authored
(len > 0 & fill = NULL), they will attempt to call the fill function to obtain more data, leading to a kernel oops. Signed-off-by:
Phillip Lougher <phillip@lougher.demon.co.uk> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by:
-
- 20 Jul, 2009 1 commit
-
-
Julia Lawall authored
release_mem_region all have a consistent length argument, len, but since in other files (res->end - res->start) + 1, equivalent to resource_size(res), is used for a resource-typed structure res, one could consider whether the same should be done here. The problem was found using the following semantic patch: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct resource *res; @@ - (res->end - res->start) + 1 + resource_size(res) @@ struct resource *res; @@ - res->end - res->start + BAD(resource_size(res)) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Acked-by:
-
- 03 Aug, 2009 1 commit
-
-
Julia Lawall authored
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @match exists@ expression x, E; statement S1, S2; @@ x = romfs_iget(...) ... when != x = E ( * if (x == NULL || ...) S1 else S2 | * if (x == NULL && ...) S1 else S2 ) // </smpl> Signed-off-by:
-
- 03 Sep, 2009 1 commit
-
-
Roel Kluin authored
Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Acked-by:
Jack Steiner <steiner@sgi.com> Signed-off-by:
-
- 02 Sep, 2009 1 commit
-
-
Alexey Dobriyan authored
Cc: Jack Steiner <steiner@sgi.com> Signed-off-by:
-
- 24 Aug, 2009 2 commits
-
-
Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Cc: Zach Brown <zach.brown@oracle.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by:
-
Jiri Slaby authored
dev_dbg() inside the if so that we are sure we can use id_reg values. Signed-off-by:
-
- 25 Jun, 2009 1 commit
-
-
Roel Kluin authored
Signed-off-by:
-
- 26 Aug, 2009 1 commit
-
-
Jesper Dangaard Brouer authored
and edac_pci.c. They all use a wait_for_completion() scheme, but this scheme it not 100% safe on multiple CPUs. See the _rcu_barrier() implementation which explains why extra precausion is needed. The patch adds a comment about rcu_barrier() and as a precausion calls rcu_barrier(). A maintainer needs to look at removing the wait_for_completion code. [dougthompson@xmission.com: remove the wait_for_completion code] Signed-off-by Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by:
Doug Thompson <dougthompson@xmission.com> Signed-off-by:
-
- 11 Aug, 2009 2 commits
-
-
Jason Uhlenkott authored
from x38_edac (which was previously fixed). Thanks to Lu Zhihe for spotting this. Signed-off-by:
Jason Uhlenkott <juhlenko@akamai.com> Signed-off-by:
-
Jason Uhlenkott authored
light testing so far, and currently makes no attempt to decode error addresses at anything finer than csrow granularity. Signed-off-by:
-
- 15 Jul, 2009 3 commits
-
-
Julia Lawall authored
off-by-one errors in calculating the resource size. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct resource *res; @@ - (res->end - res->start) + 1 + resource_size(res) // </smpl> Signed-off-by:
-
Doug Thompson authored
driver for the Freescale MPC85xx memory controller. The only difference between the two processors are in the CS_BNDS register parsing code, which has been changed so it will work on both processors. The L2 cache controller does not exist on the MPC83xx, but the OF subsystem will not use the driver if the device is not present in the OF device tree. I had to change the nr_pages calculation to make the math work out. I checked it on my board and did the math by hand for a 64GB 85xx using 64K pages. In both cases, nr_pages * PAGE_SIZE comes out to the correct value. Signed-off-by:
Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by:
-
Doug Thompson authored
compatible lists so that EDAC can recognize P2020 meomry controller and L2 cache controller and export the relevant fields to sysfs. EDAC MPC85xx DDR3 support is needed if DDR3 memory stick is installed on a P2020DS board so that EDAC core can recognize DDR3 memory type. Signed-off-by:
Yang Shi <yang.shi@windriver.com> Acked-by:
Dave Jiang <djiang@mvista.com> Signed-off-by:
-
- 23 Jul, 2009 1 commit
-
-
Mike Frysinger authored
__KERNEL__, so don't bleed these types to userspace. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by:
-
- 30 Jul, 2009 1 commit
-
-
Sukadev Bhattiprolu authored
consistency with the CLONE_THREAD check in copy_pid_ns(), disable CLONE_PARENT with CLONE_NEWPID, at least until the required semantics of pid namespaces are clear. Signed-off-by:
Sukadev Bhattiprolu <sukadev@us.ibm.com> Acked-by:
Serge Hallyn <serue@us.ibm.com> Cc: Oren Laadan <orenl@cs.columbia.edu> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by:
-
- 24 Aug, 2009 1 commit
-
-
Sukadev Bhattiprolu authored
multi-rooted process tree. Besides siblings of global init remain as zombies on exit since they are not reaped by their parent (swapper). So prevent global and container-inits from creating siblings. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Acked-by:
-
- 10 Sep, 2009 1 commit
-
-
Alexey Dobriyan authored
It isn't needed -- read or write flag is already passed and sysctl shouldn't care about the rest. It _was_ used in two places at arch/frv for some reason. Signed-off-by:
-
- 24 Aug, 2009 1 commit
-
-
Joe Perches authored
Cc: David Daney <ddaney@caviumnetworks.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by:
-
- 10 Sep, 2009 1 commit
-
-
Jiri Slaby authored
by jumping to the 'out' label. http://stanse.fi.muni.cz/Signed-off-by:
-
- 17 Aug, 2009 1 commit
-
-
Dan Carpenter authored
RIOBootTable[DownLoad.ProductCode] a couple lines down. Found by smatch (http://repo.or.cz/w/smatch.git). Signed-off-by:
Dan Carpenter <error27@gmail.com> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
-
- 12 Aug, 2009 1 commit
-
-
Nils Carlson authored
both when using the periodic capability of the hardware and while emulating the periodic interrupt (when hardware does not support periodic mode). With timers capable of periodic interrupts, the comparator field is first set with the period value followed by set of hidden accumulator, which has the side effect of overwriting the comparator value. This results in wrong periodicity for the interrupts. For, periodic interrupts to work, following steps are necessary, in that order. * Set config with Tn_VAL_SET_CNF bit * Write to hidden accumulator, the value written is the time when the first interrupt should be generated * Write compartor with period interval for subsequent interrupts (http://www.intel.com/hardwaredesign/hpetspec_1.pdf ) When emulating periodic timer with timers not capable of periodic interrupt, driver is adding the period to counter value instead of comparator value, which causes slow drift when using this emulation. Also, driver seems to add hpetp->hp_delta both while setting up periodic interrupt and while emulating periodic interrupts with timers not capable of doing periodic interrupts. This hp_delta will result in slower than expected interrupt rate and should not be used while setting the interval. Signed-off-by:
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by:
Nils Carlson <nils.carlson@ericsson.com> Signed-off-by:
-
- 04 Aug, 2009 1 commit
-
-
Roel Kluin authored
Signed-off-by:
-
- 24 Aug, 2009 2 commits
-
-
Bartlomiej Zolnierkiewicz authored
Signed-off-by:
-
Dave Young authored
Remove the unused char *s. Signed-off-by:
Dave Young <hidave.darkstar@gmail.com> Cc: Renzo Davoli <renzo@cs.unibo.it> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
-
- 18 Aug, 2009 1 commit
-
-
Renzo Davoli authored
In register_chrdev there is a loop to change all '/' into '!' in the kernel object name. This code is useless as the same substitution is in kobject_set_name_vargs in lib/kobject.c: 228 /* ewww... some of these buggers have '/' in the name ... */ 229 while ((s = strchr(kobj->name, '/'))) 230 s[0] = '!'; kobject_set_name_vargs is called by kobject_set_name. kobject_set_name is called just above the useless loop. Signed-off-by:
Renzo Davoli <renzo@cs.unibo.it> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
-
- 21 Jul, 2009 1 commit
-
-
Nikanth Karthikesan authored
unnecessarily checked again in clear_user. Use __clear_user, which does not check for access_ok(). Signed-off-by:
Nikanth Karthikesan <knikanth@suse.de> Signed-off-by:
-
- 02 Jul, 2009 1 commit
-
-
Mike Frysinger authored
that rather than handling the casts ourself. Signed-off-by:
David McCullough <david_mccullough@securecomputing.com> Acked-by:
Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by:
-
- 20 Jul, 2009 1 commit
-
-
David Howells authored
consider the executable's PT_GNU_STACK, assuming the executable has one. Currently the behaviour is to take the largest stack size and use that, but that means you can't reduce the stack size in the executable. The loader's stack size should probably only be used when executing the loader directly. WARNING: This patch is slightly dangerous - it may render a system inoperable if the loader's stack size is larger than that of important executables, and the system relies unknowingly on this increasing the size of the stack. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
