- 17 Oct, 2007 40 commits
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Ulrich Drepper authored
One more small change to extend the availability of creation of file descriptors with FD_CLOEXEC set. Adding a new command to fcntl() requires no new system call and the overall impact on code size if minimal. If this patch gets accepted we will also add this change to the next revision of the POSIX spec. To test the patch, use the following little program. Adjust the value of F_DUPFD_CLOEXEC appropriately. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #ifndef F_DUPFD_CLOEXEC # define F_DUPFD_CLOEXEC 12 #endif int main (int argc, char *argv[]) { if (argc > 1) { if (fcntl (3, F_GETFD) == 0) { puts ("descriptor not closed"); exit (1); } if (errno != EBADF) { puts ("error not EBADF"); exit (1); } exit (0); } int fd = fcntl (STDOUT_FILENO, F_DUPFD_CLOEXEC, 0); if (fd == -1 && errno == EINVAL) { puts ("F_DUPFD_CLOEXEC not supported"); return 0; } if (fd != 3) { puts ("program called with descriptors other than 0,1,2"); return 1; } execl ("/proc/self/exe", "/proc/self/exe", "1", NULL); puts ("execl failed"); return 1; } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by:Ulrich Drepper <drepper@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Alexey Dobriyan authored
There is nice 2 byte hole after struct task_struct::ioprio field into which we can put two 1-byte fields: ->fpu_counter and ->oomkilladj. Signed-off-by:
Alexey Dobriyan <adobriyan@sw.ru> Acked-by:
Arjan van de Ven <arjan@infradead.org> Signed-off-by:
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Roel Kluin authored
Replace some SPIN_LOCK_UNLOCKED with DEFINE_SPINLOCK Signed-off-by:
Roel Kluin <12o3l@tiscali.nl> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Franck Bui-Huu authored
Currently arch_align_stack() is used by fs/binfmt_elf.c to randomize stack pointer inside a page. But this happens only if ELF_PLATFORM symbol is defined. ELF_PLATFORM is normally set if the architecture wants ld.so to load implementation specific libraries for optimization. And currently a lot of architectures just yield this symbol to NULL. This is the case for MIPS architecture where ELF_PLATFORM is NULL but arch_align_stack() has been redefined to do stack inside page randomization. So in this case no randomization is actually done. This patch breaks this dependency which seems to be useless and allows platforms such MIPS to do the randomization. Signed-off-by:
Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Davide Libenzi authored
For Michael Kerrisk request, the following patch renames signalfd_siginfo fields in order to keep them consistent with the siginfo_t ones. Signed-off-by:
Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by:
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Eric Sandeen authored
CONFIG_EXT3_INDEX is not an exposed config option in the kernel, and it is unconditionally defined in ext3_fs.h. tune2fs is already able to turn off dir indexing, so at this point it's just cluttering up the code. Remove it. Signed-off-by:
Eric Sandeen <sandeen@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
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Alan Cox authored
The early LFS work that Linux uses favours EFBIG in various places. SuSv3 specifically uses EOVERFLOW for this as noted by Michael (Bug 7253) [EOVERFLOW] The named file is a regular file and the size of the file cannot be represented correctly in an object of type off_t. We should therefore transition to the proper error return code Signed-off-by:Alan Cox <alan@redhat.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by:
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Ralf Baechle authored
Compiling handle_percpu_irq only on uniprocessor generates an artificial special case so a typical use like: set_irq_chip_and_handler(irq, &some_irq_type, handle_percpu_irq); needs to be conditionally compiled only on SMP systems as well and an alternative UP construct is usually needed - for no good reason. This fixes uniprocessor configurations for some MIPS SMP systems. Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Acked-by:
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Ahmed S. Darwish authored
Only very little files use the deprecated SA_* IRQ flags in latest pull. This patch series removes such macros from the tree and transfrom old code to the new IRQF_* flags. I've grepped the whole tree to make sure that no more files than the patched ones use such deprecated macros. I hope this series won't introduce build errors. Signed-off-by:
Ahmed S. Darwish <darwish.07@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by:
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Ahmed S. Darwish authored
Stop using deprecated IRQ flags in ncr53c8xx documentaion. The new IRQF_* macros are used instead. Signed-off-by:
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Davide Libenzi authored
Since we know the shared inode count is always >0, we can avoid igrab() and use an open coded atomic_inc(). This also fixes a bug noticed by Yan Zheng <yanzheng@21cn.com>: were checking for an IS_ERR() return from igrab(), but it actually returns NULL on error. Signed-off-by:
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Ralf Baechle authored
Signed-off-by:
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James Pearson authored
/proc/PID/environ currently truncates at 4096 characters, patch based on the /proc/PID/mem code. Signed-off-by:
James Pearson <james-p@moving-picture.com> Cc: Anton Arapov <aarapov@redhat.com> Cc: Jan Engelhardt <jengelh@computergmbh.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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WANG Cong authored
Kill a may-be-used-uninitialized warning. Signed-off-by:
WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by:
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Jan Engelhardt authored
Turn Network File Systems into a menuconfig so that it can be disabled at once. (Note: I added a "default y". If you do not like that, speak up.) Signed-off-by:
Jan Engelhardt <jengelh@gmx.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Steven French <sfrench@us.ibm.com> Cc: David Howells <dhowells@redhat.com> Cc: Eric Van Hensbergen <ericvh@hera.kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by:
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Jan Engelhardt authored
Changes NLS and DLM menus into a 'menuconfig' object so that it can be disabled at once without having to enter the menu first to disable the config option. Signed-off-by:
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Rusty Russell authored
Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Acked-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Rusty Russell authored
This changes hvc_init() to be called only when someone actually uses the hvc_console driver. Dave Jones complained when profiling bootup. hvc_console used to only be for Power aka pSeries: now lguest and Xen both want it built-in in case the kernel is a guest under one of those, even though usually it will be a native boot. Signed-off-by:
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Andrey Mirkin authored
Right now futexfs and inotifyfs have one magic 0xBAD1DEA, that looks a little bit confusing. Use 0xBAD1DEA as magic for futexfs and 0x2BAD1DEA as magic for inotifyfs. Signed-off-by:
Andrey Mirkin <major@openvz.org> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Olaf Hering authored
include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO. fs/binfmt_elf.c has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT entries. So in the worst case, saved_auxv does not get an AT_NULL entry at the end. The saved_auxv array must be terminated with an AT_NULL entry. Make the size of mm_struct->saved_auxv arch dependend, based on the number of ARCH_DLINFO entries. Signed-off-by:
Olaf Hering <olh@suse.de> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by:
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Denis Cheng authored
Signed-off-by:
Denis Cheng <crquan@gmail.com> Signed-off-by:
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Pavel Emelyanov authored
The blessed way for standard caches is to use it. Besides, this may give this cache a better alignment. Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Acked-by:
Cedric Le Goater <clg@fr.ibm.com> Acked-by:
Serge Hallyn <serue@us.ibm.com> Signed-off-by:
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Pavel Emelyanov authored
The nslock spinlock is not used in the kernel at all. Remove it. Signed-off-by:
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Alexey Dobriyan authored
For those who deselect POSIX message queues. Reduces SLAB size of user_struct from 64 to 32 bytes here, SLUB size -- from 40 bytes to 32 bytes. [akpm@linux-foundation.org: fix build] Signed-off-by:
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Alexey Dobriyan authored
Save some space because uid_hash_find() has 3 callsites. Signed-off-by:
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Cyrill Gorcunov authored
This patch does additional coding style fixup. Initially the code is being distorted by Lindent (in my patches sent not very long ago) and fixed in the followup patches but this stuff was accidently missed. New and old compiled files were compared with cmp to check for being identically. So the patch will not break the kernel. Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by:
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Matti Linnanvuori authored
atomic_ops.txt has incorrect, misleading and insufficient information about semantics of initializer, atomic_set, atomic_read and atomic_xchg. It also incorrectly implies that operations mentioned above are not actual atomic operations. Included is most of the patch Document non-semantics of atomic_read() and atomic_set() by Chris Snook, except the word "assignment". Signed-off-by:
Matti Linnanvuori <mattilinnanvuori@yahoo.com> Cc: Nick Piggin <npiggin@suse.de> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Alan Cox authored
This adds three new functions (or in one case to be more exact makes it always available) tty_termios_copy_hw Copies all the hardware settings from one termios structure to the other. This is intended for drivers that support little or no hardware setting tty_termios_encode_baud_rate Allows you to set the input and output baud rate in a termios structure. A driver is supposed to set the resulting baud rate from a request so most will want to use this function to set the resulting input and output rates to match the hardware values. Internally it knows about keeping Bxxx encoding when possible to maximise compatibility. tty_encode_baud_rate As above but for the tty's own current termios structure I suspect this will initially need some tweaking as it gets enabled by driver patches over the next few mm cycles so consider this lot -mm only for the moment so it can stabilize and end up neat before it goes to base. I've tried not to break any obscure architectures - if you get a speed you can't represent the code will print warnings on non updated termios systems but not break. Once this is merged and seems sane I've got a growing pile of driver updates to use it - notably for USB serial drivers. [akpm@linux-foundation.org: cleanups] Signed-off-by:
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Alan Cox authored
I simply don't have any old IDE systems any more or time to really look after this. Nobody responded to the previous linux-ide mail about maintainers so... Signed-off-by:
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Borislav Petkov authored
shut up those: fs/isofs/namei.c: In function 'isofs_lookup': fs/isofs/namei.c:161: warning: 'offset' may be used uninitialized in this function fs/isofs/namei.c:161: warning: 'block' may be used uninitialized in this function By the way, they get overwritten at the end of isofs_find_entry(). Signed-off-by:
Borislav Petkov <bbpetkov@yahoo.de> Signed-off-by:
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Robert P. J. Day authored
Since nothing earlier than gcc-3.2 is supported for kernel compilation, that 2.95 hack can be removed. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Signed-off-by:
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Lepton Wu authored
There is possible dead loop in finish_unfinished function. In most situation, the call chain iput -> ... -> reiserfs_delete_inode -> remove_save_link will success. But for some reason such as data corruption, reiserfs_delete_inode fails on reiserfs_do_truncate -> search_for_position_by_key. Then remove_save_link won't be called. We always get the same "save_link_key" in the while loop in finish_unfinished function. The following patch adds a check for the possible dead loop and just remove save link when deap loop. [akpm@linux-foundation.org: cleanups] Signed-off-by:
Lepton Wu <ytht.net@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> Signed-off-by:
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Denys Vlasenko authored
Add const modifiers to a few struct nls_table's member pointers in include/linux/nls.h and adds a lot of const's in fs/nls/*.c files. Resulting changes as visible by size: text data bss dec hex filename 113612 481216 2368 597196 91ccc nls.org/built-in.o 593548 3296 288 597132 91c8c nls/built-in.o Apparently compiler managed to optimize code a bit better because of const-ness. No other changes are made. Signed-off-by:
Denys Vlasenko <vda.linux@googlemail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Denis V. Lunev authored
This patch makes shrink_dcache_sb consistent with dentry pruning policy. On the first pass we iterate over dentry unused list and prepare some dentries for removal. However, since the existing code moves evicted dentries to the beginning of the LRU it can happen that fresh dentries from other superblocks will be inserted *before* our dentries. This can result in significant slowdown of shrink_dcache_sb(). Moreover, for virtual filesystems like unionfs which can call dput() during dentries kill existing code results in O(n^2) complexity. We observed 2 minutes shrink_dcache_sb() with only 35000 dentries. To avoid this effects we propose to isolate sb dentries at the end of LRU list. Signed-off-by:
Denis V. Lunev <den@openvz.org> Signed-off-by:
Kirill Korotaev <dev@openvz.org> Signed-off-by:
Andrey Mirkin <amirkin@openvz.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by:
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Maciej W. Rozycki authored
Remove the old-fashioned lk201 driver under drivers/tc/ that used to be used by the old dz.c and zs.c drivers, which is now orphan code referred to from nowhere and does not build anymore. A modern replacement is available as drivers/input/keyboard/lkkbd.c. There are no plans to do anything about this piece of code and it does not fit anywhere anymore, so it is not just a matter of maintenance or the lack of. There are still some bits that might be added to the new lkkbd.c driver based on the old code, and the embedded hardware documentation which is otherwise quite hard to get hold of might be useful to keep too. Both of these can be done separately though. RIP. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Acked-by:
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Rene Herman authored
Be explicit about printing hex. Signed-off-by:
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Lepton Wu authored
When reading corrupted reiserfs directory data, d_reclen could be a negative number or a big positive number, this can lead to kernel panic or oop. The following patch adds a sanity check. Signed-off-by:
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Randy Dunlap authored
Requested by Jeff Garzik. v3, updated from lkml comments. Add info about various email clients and their applicability in being used to send Linux kernel patches. Some notes takes from http://mbligh.org/linuxdocs/Email/Clients Portions used with permission. Signed-off-by:
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Emil Medve authored
Other/Some pr_*() macros are already defined in kernel.h, but pr_err() was defined multiple times in several other places Signed-off-by:
Emil Medve <Emilian.Medve@Freescale.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Tony Lindgren <tony@atomide.com> Reviewed-by:
Satyam Sharma <satyam@infradead.org> Acked-by:
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David Howells authored
Make request_key() and co fundamentally asynchronous to make it easier for NFS to make use of them. There are now accessor functions that do asynchronous constructions, a wait function to wait for construction to complete, and a completion function for the key type to indicate completion of construction. Note that the construction queue is now gone. Instead, keys under construction are linked in to the appropriate keyring in advance, and that anyone encountering one must wait for it to be complete before they can use it. This is done automatically for userspace. The following auxiliary changes are also made: (1) Key type implementation stuff is split from linux/key.h into linux/key-type.h. (2) AF_RXRPC provides a way to allocate null rxrpc-type keys so that AFS does not need to call key_instantiate_and_link() directly. (3) Adjust the debugging macros so that they're -Wformat checked even if they are disabled, and make it so they can be enabled simply by defining __KDEBUG to be consistent with other code of mine. (3) Documentation. [alan@lxorguk.ukuu.org.uk: keys: missing word in documentation] Signed-off-by:David Howells <dhowells@redhat.com> Signed-off-by:
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