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97ac73506c
linux/arch/powerpc/kernel
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Amit Arora 97ac73506c sys_fallocate() implementation on i386, x86_64 and powerpc 
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature will need
to support an inode operation called ->fallocate().
Applications can use this feature to avoid fragmentation to certain
level and thus get faster access speed. With preallocation, applications
also get a guarantee of space for particular file(s) - even if later the
the system becomes full.

Currently, glibc provides an interface called posix_fallocate() which
can be used for similar cause. Though this has the advantage of working
on all file systems, but it is quite slow (since it writes zeroes to
each block that has to be preallocated). Without a doubt, file systems
can do this more efficiently within the kernel, by implementing
the proposed fallocate() system call. It is expected that
posix_fallocate() will be modified to call this new system call first
and incase the kernel/filesystem does not implement it, it should fall
back to the current implementation of writing zeroes to the new blocks.
ToDos:
1. Implementation on other architectures (other than i386, x86_64,
   and ppc). Patches for s390(x) and ia64 are already available from
   previous posts, but it was decided that they should be added later
   once fallocate is in the mainline. Hence not including those patches
   in this take.
2. Changes to glibc,
   a) to support fallocate() system call
   b) to make posix_fallocate() and posix_fallocate64() call fallocate()

Signed-off-by: Amit Arora <aarora@in.ibm.com>
2007-07-17 21:42:44 -04:00
..
vdso32 [POWERPC] Fix VDSO gettimeofday() when called with NULL struct timeval 2007-06-26 14:41:19 +10:00
vdso64 Fix VDSO gettimeofday() when called with NULL struct timeval. 2007-06-29 21:27:00 -07:00
align.c [POWERPC] Alignment exception uses __get/put_user_inatomic 2007-04-13 04:09:38 +10:00
asm-offsets.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-05-09 12:56:01 -07:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
binfmt_elf32.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
btext.c [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
compat_audit.c [PATCH] add SIGNAL syscall class (v3) 2007-05-11 05:38:25 -04:00
cpu_setup_6xx.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
cpu_setup_pa6t.S [POWERPC] pasemi: Enable one more hid bit 2007-04-24 21:31:49 +10:00
cpu_setup_ppc970.S [POWERPC] powerpc: Enable DEEPNAP power savings mode on 970MP 2006-10-16 16:32:25 +10:00
cputable.c [POWERPC] Oprofile support for Power 5++ 2007-07-11 13:21:46 +10:00
crash_dump.c [POWERPC] Make doc comments extractable 2006-08-08 17:07:04 +10:00
crash.c [PATCH] Kexec / Kdump: Unify elf note code 2006-12-07 08:39:46 -08:00
dma_64.c [POWERPC] Make direct DMA use node local allocations 2006-12-04 20:38:59 +11:00
entry_32.S [POWERPC] Fix COMMON symbol warnings 2007-05-17 21:10:15 +10:00
entry_64.S [POWERPC] Clear RI bit in MSR before restoring r13 when returning to userspace 2007-02-07 14:03:23 +11:00
firmware.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fpu.S [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S 2006-08-30 14:45:35 +10:00
head_4xx.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head_8xx.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head_32.S [POWERPC] Remove the dregs of APUS support from arch/powerpc 2007-06-14 22:30:15 +10:00
head_44x.S [POWERPC] Early serial debug support for PPC44x 2007-05-08 14:47:33 +10:00
head_64.S [POWERPC] Correct __secondary_hold comment 2007-06-28 19:16:47 +10:00
head_booke.h [PATCH] powerpc: Fix Kernel FP unavail exception for BookE 2006-02-10 16:51:50 +11:00
head_fsl_booke.S [POWERPC] 85xx: Drop use of SYNC macro in head_fsl_booke.S 2007-02-13 16:13:27 -06:00
ibmebus.c [POWERPC] ibmebus: change probe/remove interface from using loc-code to DT path 2007-04-13 06:12:42 +10:00
idle_6xx.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
idle_power4.S [POWERPC] powermac: Support G5 CPU hotplug 2007-05-07 20:31:13 +10:00
idle.c [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
io.c [POWERPC] Move inline asm eieio to using eieio inline function 2007-07-10 00:33:14 -05:00
iomap.c [POWERPC] Remove fastcall function attribute 2007-01-26 01:52:27 -06:00
iommu.c Revert "[POWERPC] DMA 4GB boundary protection" 2007-04-26 19:48:15 +10:00
irq.c [POWERPC] Check for NULL ppc_md.init_IRQ() before calling 2007-07-10 22:03:14 +10:00
isa-bridge.c [POWERPC] Rewrite IO allocation & mapping on powerpc64 2007-06-14 22:29:56 +10:00
kprobes.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-05-08 11:50:19 -07:00
l2cr_6xx.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
legacy_serial.c Merge branch 'linux-2.6' 2007-05-08 13:37:51 +10:00
lparcfg.c [POWERPC] Replace if-then-else with a switch statement 2007-04-27 21:13:21 +10:00
lparmap.c [POWERPC] iSeries: suppress build warning in lparmap.c 2007-05-09 16:34:59 +10:00
machine_kexec_32.c Storage class should be first 2006-06-26 18:57:34 +02:00
machine_kexec_64.c [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
machine_kexec.c [POWERPC] Move some kexec logic into machine_kexec.c 2006-08-17 16:41:10 +10:00
Makefile [POWERPC] Use global_number in ppc32 pci_controller 2007-06-29 01:58:37 -05:00
misc_32.S [POWERPC] Merge CPU features pertaining to icache coherency 2007-06-14 22:30:16 +10:00
misc_64.S [POWERPC] kexec: Send slaves to new kernel earlier 2007-06-25 16:55:16 +10:00
misc.S [POWERPC] convert string i/o operations to C 2006-09-20 14:06:18 +10:00
module_32.c [POWERPC] Add support for R_PPC_ADDR16_HI relocations 2007-01-24 21:13:58 +11:00
module_64.c [POWERPC] Generic BUG for powerpc 2006-12-11 16:35:07 +11:00
msi.c [POWERPC] PowerPC MSI infrastructure 2007-05-08 13:40:31 +10:00
nvram_64.c [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
of_device.c [POWERPC] Export of_device_get_modalias 2007-05-07 20:31:15 +10:00
of_platform.c [POWERPC] Rewrite IO allocation & mapping on powerpc64 2007-06-14 22:29:56 +10:00
paca.c [POWERPC] Implement SLB shadow buffer 2006-08-08 17:08:56 +10:00
pci_32.c PCI: Make pcibios_add_platform_entries() return errors 2007-07-11 16:02:07 -07:00
pci_64.c Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-07-16 17:58:08 -07:00
pci_dn.c [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
pci-common.c [POWERPC] Add copyright header to pci-common.c based on pci_{32,64}.c 2007-06-29 01:58:48 -05:00
pmc.c [POWERPC] Fix typo: MMCR0_PMA0 != MMCR0_PMAO 2007-05-22 20:20:56 +10:00
ppc32.h
ppc_ksyms.c [POWERPC] Remove unused do_signal export 2007-07-10 21:53:36 +10:00
proc_ppc64.c [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
process.c [POWERPC] Always apply DABR changes on context switches 2007-06-14 22:29:57 +10:00
prom_init.c [POWERPC] Donate idle CPU cycles on dedicated partitions 2007-06-14 22:29:58 +10:00
prom_parse.c [POWERPC] Don't complain if size-cells == 0 in prom_parse() 2007-05-12 11:32:48 +10:00
prom.c [POWERPC] Remove unnecessary #undef printk from prom.c 2007-07-10 22:03:25 +10:00
ptrace32.c [POWERPC] ptrace shouldn't touch FP exec mode 2007-06-14 22:29:57 +10:00
ptrace.c PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
rtas_flash.c [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
rtas_pci.c [POWERPC] Rewrite IO allocation & mapping on powerpc64 2007-06-14 22:29:56 +10:00
rtas-proc.c [POWERPC] Fix ppc_rtas_progress_show() 2007-05-17 21:11:15 +10:00
rtas-rtc.c [PATCH] powerpc: reorg RTAS delay code 2006-06-09 21:21:06 +10:00
rtas.c [POWERPC] Remove old interface find_path_device 2007-04-24 22:08:59 +10:00
semaphore.c
setup_32.c [POWERPC] Merge CPU features pertaining to icache coherency 2007-06-14 22:30:16 +10:00
setup_64.c [POWERPC] Do firmware feature fixups after features are initialised 2007-06-25 17:03:26 +10:00
setup-common.c [POWERPC] Make the debugfs "powerpc" dir globally accessible 2007-07-10 21:53:50 +10:00
setup.h [PATCH] powerpc: Make early xmon logic immune to location of early parsing 2006-05-19 15:02:12 +10:00
signal_32.c [POWERPC] Merge creation of signal frame 2007-06-14 22:29:58 +10:00
signal_64.c Merge branch 'for-2.6.23' into merge 2007-07-11 13:28:26 +10:00
signal.c [POWERPC] Less ifdef's in signal.c/signal.h 2007-06-14 22:29:58 +10:00
signal.h [POWERPC] Less ifdef's in signal.c/signal.h 2007-06-14 22:29:58 +10:00
smp-tbsync.c [POWERPC] Replace kmalloc+memset with kzalloc 2006-12-04 20:42:09 +11:00
smp.c [POWERPC] Fix smp_call_function to be preempt-safe 2007-05-22 20:20:56 +10:00
suspend.c [PATCH] x86: Move swsusp __pa() dependent code to arch portion 2007-05-02 19:27:07 +02:00
swsusp_32.S [PATCH] Change the name of pagedir_nosave 2006-09-26 08:49:01 -07:00
swsusp_64.c [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp_asm64.S [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp.c powerpc: fixup hard_irq_disable semantics 2007-05-11 08:29:34 -07:00
sys_ppc32.c sys_fallocate() implementation on i386, x86_64 and powerpc 2007-07-17 21:42:44 -04:00
syscalls.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
sysfs.c [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports 2007-07-10 22:00:57 +10:00
systbl.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tau_6xx.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
time.c [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane 2007-07-10 22:00:54 +10:00
traps.c Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
udbg_16550.c [POWERPC] Early serial debug support for PPC44x 2007-05-08 14:47:33 +10:00
udbg.c [POWERPC] Fix console output getting dropped on platforms without udbg_putc 2007-06-14 11:56:17 +10:00
vdso.c [POWERPC] Fix VDSO compile warning 2007-06-14 22:29:55 +10:00
vecemu.c
vector.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
vio.c Merge branch 'linux-2.6' 2007-05-08 13:37:51 +10:00
vmlinux.lds.S [POWERPC] Add __read_mostly support for powerpc 2007-07-10 22:00:56 +10:00