26 Jun, 2006
40 commits
-
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
* 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: Evgeniy Dushistov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Evgeniy Dushistov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We can leak `clink' if drv->probe == 0.
Signed-off-by: Jesper Juhl
Cc: Adam Belay
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix of some spelling errors in fs/freevxfs error messages and comments
Signed-off-by: Cliff Wickman
Cc: Christoph Hellwig
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Acked-by: David S. Miller
Acked-by: Ingo Molnar
Acked-by: Martin Schwidefsky
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The core input layer is already calling add_input_randomness.
Signed-off-by: Matt Mackall
Cc: Dmitry Torokhov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Disk devices should use add_disk_randomness rather than SA_SAMPLE_RANDOM
Signed-off-by: Matt Mackall
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Disk devices should use the add_disk_randomness API rather than
SA_SAMPLE_RANDOM.Signed-off-by: Matt Mackall
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The floppy driver is already calling add_disk_randomness as it should, so this
was redundant.Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Upgrade scripts/bloat-o-meter to handle the names gcc 4 gives static
symbols.Signed-off-by: Rob Landley
Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Jesper Juhl
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Acked-by: Benjamin Herrenschmidt
Cc: Richard Purdie
Cc: "Antonino A. Daplas"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Became irrelevant when x86_64 unexported ia32_sys_call_table.
Signed-off-by: Adrian Bunk
Cc: Andi Kleen
Cc: Jeff Dike
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Introduce irq controller and use it to manage auto vector interrupts.
Introduce setup_irq() which can be used for irq setup.Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix amiga irq numbering, so they are after the generic IRQ_AUTO defines and
remove the IRQ_AMIGA_AUTO defines.Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Rename IRQ1..IRQ7 to IRQ_AUTO_1..IRQ_AUTO_7 and remove the duplicate
defintions.Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use separate entry points for auto and user vector interrupts and cleanup
naming a little.Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Additions to dma API with some small cleanups.
Signed-off-by: Richard Hirst
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make flush_icache() an inline function and clean it up a litte.
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Ignore empty pmd entry during iomap (these are the holes between the
mappings).Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
gcc-3.x has a few problems detecting a constant parameter.
Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add cpu_relax() to infinite loops in crash.c and doublefault.c. This is
the safest change.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add cpu_relax() to various smpboot.c init loops. cpu_relax() always implies a
barrier (according to Arjan), so remove those as well.Signed-off-by: Andreas Mohr
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Clean up and refactor i386 sub-architecture setup.
This change moves all the code from the
asm-i386/mach-*/setup_arch_pre/post.h headers, into
arch/i386/mach-*/setup.c. mach-*/setup_arch_pre.h is renamed to
setup_arch.h, and contains only things which should be in header files. It
is purely code-motion; there should be no functional changes at all.Several functions in arch/i386/kernel/setup.c needed to be made non-static
so that they're visible to the code in mach-*/setup.c. asm-i386/setup.h is
used to hold the prototypes for these functions.Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Chris Wright
Cc: Zachary Amsden
Cc: Chris Wright
Cc: Christian Limpach
Cc: Martin Bligh
Cc: James Bottomley
Cc: Andrey Panin
Cc: Dave Hansen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Hugh clarified the role of VM_LOCKED. So we can now implement page
migration for mlocked pages.Allow the migration of mlocked pages. This means that try_to_unmap must
unmap mlocked pages in the migration case.Signed-off-by: Christoph Lameter
Acked-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Hooks for calling vma specific migration functions
With this patch a vma may define a vma->vm_ops->migrate function. That
function may perform page migration on its own (some vmas may not contain page
structs and therefore cannot be handled by regular page migration. Pages in a
vma may require special preparatory treatment before migration is possible
etc) . Only mmap_sem is held when the migration function is called. The
migrate() function gets passed two sets of nodemasks describing the source and
the target of the migration. The flags parameter either containsMPOL_MF_MOVE which means that only pages used exclusively by
the specified mm should be movedor
MPOL_MF_MOVE_ALL which means that pages shared with other processes
should also be moved.The migration function returns 0 on success or an error condition. An error
condition will prevent regular page migration from occurring.On its own this patch cannot be included since there are no users for this
functionality. But it seems that the uncached allocator will need this
functionality at some point.Signed-off-by: Christoph Lameter
Cc: Hugh Dickins
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
