- 25 Jun, 2006 40 commits
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Evgeniy Dushistov authored
The writing to UFS file system with block/fragment!=8 may cause bogus behaviour. The problem in "ufs_bitmap_search" function, which doesn't work correctly in "block/fragment!=8" case. The idea is stolen from BSD code. Signed-off-by:
Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Evgeniy Dushistov authored
There are two ugly macros in ufs code: #define UCPI_UBH ((struct ufs_buffer_head *)ucpi) #define USPI_UBH ((struct ufs_buffer_head *)uspi) when uspi looks like struct { struct ufs_buffer_head ; } and USPI_UBH has some sence, ucpi looks like struct { struct not_ufs_buffer_head; } To prevent bugs in future, this patch convert macros to inline function and fix "ucpi" structure. Signed-off-by: -
Evgeniy Dushistov authored
Change function in fs/ufs/dir.c and fs/ufs/namei.c to work with pages instead of straight work with blocks. It fixed such bugs: * for i in `seq 1 1000`; do touch $i; done - crash system * mkdir create directory without "." and ".." entries Signed-off-by:
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Evgeniy Dushistov authored
This series of patches finished "bugs fixing" mentioned here http://lkml.org/lkml/2006/1/31/275 . The main bugs: * for i in `seq 1 1000`; do touch $i; done - crash system * mkdir create directory without "." and ".." entries The suggested solution is work with page cache instead of straight work with blocks. Such solution has following advantages * reduce code size and its complexity * some global locks go away * fix bugs The most part of code is stolen from ext2, because of it has similar directory structure. Patches testes with UFS1 and UFS2 file systems. This patch installs i_mapping->a_ops for directory inodes and removes some duplicated code. Signed-off-by:
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Evgeniy Dushistov authored
First of all some necessary notes about UFS by it self: To avoid waste of disk space the tail of file consists not from blocks (which is ordinary big enough, 16K usually), it consists from fragments(which is ordinary 2K). When file is growing its tail occupy 1 fragment, 2 fragments... At some stage decision to allocate whole block is made and all fragments are moved to one block. How this situation was handled before: ufs_prepare_write ->block_prepare_write ->ufs_getfrag_block ->... ->ufs_new_fragments: bh = sb_bread bh->b_blocknr = result + i; mark_buffer_dirty (bh); This is wrong solution, because: - it didn't take into consideration that there is another cache: "inode page cache" - because of sb_getblk uses not b_blocknr, (it uses page->index) to find certain block, this breaks sb_getblk. How this situation is handled now: we go though all "page inode cache", if there are no such page in cache we load it into cache, and change b_blocknr. Signed-off-by: -
Evgeniy Dushistov authored
* After block allocation, we map it on the same "address" as 8 others blocks * We nullify block several times: once in ufs/block.c and once in block_*write_full_page, and use different "caches" for this. Signed-off-by:
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Evgeniy Dushistov authored
Currently, ufs write support have two sets of problems: work with files and work with directories. This series of patches should solve the first problem. This patch is similar to http://lkml.org/lkml/2006/1/17/61 this patch complements it. The situation the same: in ufs_trunc_(not direct), we read block, check if count of links to it is equal to one, if so we finish cycle, if not continue. Because of "count of links" always >=2 this operation cause infinite cycle and hang up the kernel. Signed-off-by:
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Jesper Juhl authored
We can leak `clink' if drv->probe == 0. Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Cc: Adam Belay <ambx1@neo.rr.com> Signed-off-by:
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Cliff Wickman authored
Fix of some spelling errors in fs/freevxfs error messages and comments Signed-off-by:
Cliff Wickman <cpw@sgi.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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Alan Stern authored
Since raw_notifier chains don't benefit from any centralized locking protections, they shouldn't suffer from the associated limitations. Under some circumstances it might make sense for a raw_notifier callout routine to unregister itself from the notifier chain. This patch (as678) changes the notifier core to allow for such things. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Paul Mackerras authored
There are several instances of per_cpu(foo, raw_smp_processor_id()), which is semantically equivalent to __get_cpu_var(foo) but without the warning that smp_processor_id() can give if CONFIG_DEBUG_PREEMPT is enabled. For those architectures with optimized per-cpu implementations, namely ia64, powerpc, s390, sparc64 and x86_64, per_cpu() turns into more and slower code than __get_cpu_var(), so it would be preferable to use __get_cpu_var on those platforms. This defines a __raw_get_cpu_var(x) macro which turns into per_cpu(x, raw_smp_processor_id()) on architectures that use the generic per-cpu implementation, and turns into __get_cpu_var(x) on the architectures that have an optimized per-cpu implementation. Signed-off-by:
Paul Mackerras <paulus@samba.org> Acked-by:
David S. Miller <davem@davemloft.net> Acked-by:
Ingo Molnar <mingo@elte.hu> Acked-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Matt Mackall authored
The core input layer is already calling add_input_randomness. Signed-off-by:
Matt Mackall <mpm@selenic.com> Cc: Dmitry Torokhov <dtor_core@ameritech.net> Signed-off-by:
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Matt Mackall authored
Disk devices should use add_disk_randomness rather than SA_SAMPLE_RANDOM Signed-off-by:
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Matt Mackall authored
Disk devices should use the add_disk_randomness API rather than SA_SAMPLE_RANDOM. Signed-off-by:
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Matt Mackall authored
The floppy driver is already calling add_disk_randomness as it should, so this was redundant. Signed-off-by:
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Rob Landley authored
Upgrade scripts/bloat-o-meter to handle the names gcc 4 gives static symbols. Signed-off-by:
Rob Landley <rob@landley.net> Signed-off-by:
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Jesper Juhl authored
If CONFIG_KALLSYMS is defined and if it should happen that is_exported() is given a NULL 'mod' and lookup_symbol(name, __start___ksymtab, __stop___ksymtab) returns 0, then we'll end up dereferencing a NULL pointer. Signed-off-by:
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Michael Hanselmann authored
This patch contains a total rewrite of the backlight infrastructure for portable Apple computers. Backward compatibility is retained. A sysfs interface allows userland to control the brightness with more steps than before. Userland is allowed to upload a brightness curve for different monitors, similar to Mac OS X. [akpm@osdl.org: add needed exports] Signed-off-by:
Michael Hanselmann <linux-kernel@hansmi.ch> Acked-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Adrian Bunk authored
Became irrelevant when x86_64 unexported ia32_sys_call_table. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Andi Kleen <ak@muc.de> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Roman Zippel authored
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Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
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Roman Zippel authored
Convert the generic irq code to use irq controller, this gets rid of the machine specific callbacks and gives better control over irq handling without duplicating lots of code. Signed-off-by:
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Roman Zippel authored
Introduce irq controller and use it to manage auto vector interrupts. Introduce setup_irq() which can be used for irq setup. Signed-off-by:
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Roman Zippel authored
Fix amiga irq numbering, so they are after the generic IRQ_AUTO defines and remove the IRQ_AMIGA_AUTO defines. Signed-off-by:
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Roman Zippel authored
Rename IRQ1..IRQ7 to IRQ_AUTO_1..IRQ_AUTO_7 and remove the duplicate defintions. Signed-off-by:
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Roman Zippel authored
Use separate entry points for auto and user vector interrupts and cleanup naming a little. Signed-off-by:
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Roman Zippel authored
Move some of the prints in die_if_kernel() to show_registers() and call that instead of show_stack(), so show_registers() prints now similiar info as other archs. Clean up the function a little. Signed-off-by:
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Roman Zippel authored
Additions to dma API with some small cleanups. Signed-off-by:
Richard Hirst <rhirst@levanta.com> Signed-off-by:
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Roman Zippel authored
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Roman Zippel authored
Make flush_icache() an inline function and clean it up a litte. Signed-off-by:
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Roman Zippel authored
Ignore empty pmd entry during iomap (these are the holes between the mappings). Signed-off-by:
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Roman Zippel authored
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Roman Zippel authored
gcc-3.x has a few problems detecting a constant parameter. Signed-off-by:
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Chuck Ebbert authored
Add cpu_relax() to infinite loops in crash.c and doublefault.c. This is the safest change. Signed-off-by:
Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by:
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