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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2006-04-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: kconfig: fix typo in change count initialization kconfig: recenter menuconfig kconfig: revert conf behaviour change kconfig: fix default value for choice input kbuild: fix NULL dereference in scripts/mod/modpost.c kbuild: fix mode of checkstack.pl and other files. kbuild: rebuild initramfs if content of initramfs changes kbuild: properly pass options to hostcc when doing make O=.. kbuild: modules_install for external modules must not remove existing modules kbuild: fix make dir/ ver_linux: don't print reiser4progs version if none found kbuild: mips: fix sed regexp to generate asm-offset.h kbuild: fix building single targets with make O=.. single-target kbuild: use relative path to -I kbuild: fix unneeded rebuilds in drivers/net/chelsio after moving source tree kbuild: fix unneeded rebuilds in drivers/media/video after moving source tree kbuild: fix garbled text in modules.txt
| * kconfig: fix typo in change count initializationRoman Zippel2006-04-11
| | | | | | | | | | | | | | Configuration needs saving when either of these conditions is true. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kconfig: recenter menuconfigRoman Zippel2006-04-11
| | | | | | | | | | | | | | | | | | Move the menuconfig output more into the centre again, it's using a fixed position depending on the window width using the fact that the menu output has to work in a 80 chars terminal. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kconfig: revert conf behaviour changeRoman Zippel2006-04-11
| | | | | | | | | | | | | | | | After the last patch fixed the real problem, revert this needless behaviour change of conf, which only hid the real problem. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kconfig: fix default value for choice inputRoman Zippel2006-04-11
| | | | | | | | | | | | | | | | The wrong default value can cause conf to end up in endless loop for choice questions. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix NULL dereference in scripts/mod/modpost.cEric Sesterhenn2006-04-11
| | | | | | | | | | | | | | | | before is NULL in this case, concluding from the surrounding code it seems that after is the right one to use. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix mode of checkstack.pl and other files.Paolo 'Blaisorblade' Giarrusso2006-04-11
| | | | | | | | | | | | | | | | | | Make it executable like it should be. Do the same for other files intended to be executed by the user - the ones called by the build process needn't be executable as they already work (as argument to their interpreter). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: rebuild initramfs if content of initramfs changesSam Ravnborg2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | initramfs.cpio.gz being build in usr/ and included in the kernel was not rebuild when the included files changed. To fix this the following was done: - let gen_initramfs.sh generate a list of files and directories included in the initramfs - gen_initramfs generate the gzipped cpio archive so we could simplify the kbuild file (Makefile) - utilising the kbuild infrastructure so when uid/gid root mapping changes the initramfs will be rebuild With this change we have a much more robust initramfs generation. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: properly pass options to hostcc when doing make O=..Sam Ravnborg2006-04-07
| | | | | | | | | | | | | | | | | | | | | | This fix a longstanding bug where proper options was not passed to hostcc in case of a make O=.. build. This bug showed up in (not yet merged) klibc, and is not known to have any counterpart in-kernel. Fixed by moving the flags macro to Kbuild.include so it can be used by both Makefile.lib and Makefile.host. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: modules_install for external modules must not remove existing modulesAndreas Gruenbacher2006-04-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When installing external modules with `make modules_install', the first thing that happens is a rm -rf of the target directory. This works only once, and breaks when installing more than one (set of) external module(s). With following fix we have the functionality: - for a in-kernel modules_install the $(MODLIB)/kernel directory will be deleted before module installation - for external modules the existing modules will be left as is assuming one may be building and installign several external modules Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix make dir/Sam Ravnborg2006-04-06
| | | | | | | | | | | | | | kbuild added an extra '/' after the directory - resulting in all files being rebuild in a subdirectory. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * ver_linux: don't print reiser4progs version if none foundAlexey Dobriyan2006-04-05
| | | | | | | | | | | | | | Sam: did the same for reiserprogs Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: mips: fix sed regexp to generate asm-offset.hAtsushi Nemoto2006-04-05
| | | | | | | | | | | | | | | | | | | | | | Changes to Makefile.kbuild ("kbuild: add -fverbose-asm to i386 Makefile") breaks asm-offset.h file on MIPS. Other archs possibly suffer this change too but I'm not sure. Here is a fix just for MIPS. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix building single targets with make O=.. single-targetSam Ravnborg2006-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | This fixes single targets build so it now works relaiably in following cases: - build with mixed kernel source and output files (make single-target) - build with separate output directory (make O=.. single-target) - external module with mixed kernel source and output files (make M='pwd' single-target) - external module with separate kernel source and output files (make O=.. M='pwd' single-target) Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: use relative path to -ISam Ravnborg2006-04-04
| | | | | | | | | | | | | | | | | | Using a relative path has the advantage that when the kernel source tree is moved the relevant .o files will not be rebuild just because the path to the kernel src has changed. This also got rid of a user of TOPDIR - which has been deprecated for a long time now. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix unneeded rebuilds in drivers/net/chelsio after moving source treeCarl-Daniel Hailfinger2006-04-04
| | | | | | | | | | | | | | | | | | | | | | This fixes some uneeded rebuilds under drivers/net/chelsio after moving the source tree. The makefiles used $(TOPDIR) for include paths, which is unnecessary. Changed to use relative paths. Compile tested, produces byte-identical code to the previous makefiles. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix unneeded rebuilds in drivers/media/video after moving source treeCarl-Daniel Hailfinger2006-04-04
| | | | | | | | | | | | | | | | | | | | | | This fixes some uneeded rebuilds under drivers/media/video after moving the source tree. The makefiles used $(src) and $(srctree) for include paths, which is unnecessary. Changed to use relative paths. Compile tested, produces byte-identical code to the previous makefiles. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * kbuild: fix garbled text in modules.txtBrian Gerst2006-04-04
| | | | | | | | | | Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | Merge branch 'release' of ↵Linus Torvalds2006-04-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Prefetch mmap_sem in ia64_do_page_fault() [IA64] Failure to resume after INIT in user space [IA64] Pass more data to the MCA/INIT notify_die hooks [IA64] always map VGA framebuffer UC, even if it supports WB [IA64] fix bug in ia64 __mutex_fastpath_trylock [IA64] for_each_possible_cpu: ia64 [IA64] update HP CSR space discovery via ACPI [IA64] Wire up new syscalls {set,get}_robust_list [IA64] 'msg' may be used uninitialized in xpc_initiate_allocate() [IA64] Wire up new syscall sync_file_range()
| * | [IA64] Prefetch mmap_sem in ia64_do_page_fault()Christoph Lameter2006-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take a hint from an x86_64 optimization by Arjan van de Ven and use it for ia64. See a9ba9a3b3897561d01e04cd21433746df46548c0 Prefetch the mmap_sem, which is critical for the performance of the page fault handler. Note: mm may be NULL but I guess that is safe. See 458f935527372499b714bf4f8e646a68bb0f52e3 Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Failure to resume after INIT in user spaceKeith Owens2006-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | The OS INIT handler is loading incorrect values into cr.ifa on exit. This shows up as a hang when resuming after an INIT that is delivered while a cpu is in user space. Correct the value loaded into cr.ifa. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Pass more data to the MCA/INIT notify_die hooksKeith Owens2006-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MCA/INIT handlers maintain important state in the SAL to OS (sos) area and in the monarch_cpu flag. Kernel debuggers (such as KDB) need this data, and may need to adjust the monarch_cpu field so make the data available to the notify_die hooks. Define two more events for calling the functions on the notify_die chain. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] always map VGA framebuffer UC, even if it supports WBBjorn Helgaas2006-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EFI on some machines, e.g., Intel Tiger, reports that the VGA framebuffer supports WB access. ioremap() prefers WB when possible, so it can work when mapping main memory. But it doesn't make sense to map a framebuffer WB, because the driver doesn't flush explicitly, so updates won't make it to the device immediately. This is due to Zou Nan hai <nanhai.zou@intel.com>. More extensive fix that adds a "size" argument coming soon. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] fix bug in ia64 __mutex_fastpath_trylockChen, Kenneth W2006-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The parenthesis around "likely" used in ia64 __mutex_fastpath_trylock is incorrect, and it leads to broken mutex_trylock. Here is the patch that fixed the bug. I removed the likely altogether because there is no branch and gcc does a reasonable job at predicating the return value. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] for_each_possible_cpu: ia64KAMEZAWA Hiroyuki2006-04-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for_each_cpu() actually iterates across all possible CPUs. We've had mistakes in the past where people were using for_each_cpu() where they should have been iterating across only online or present CPUs. This is inefficient and possibly buggy. We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the future. This patch replaces for_each_cpu with for_each_possible_cpu under arch/ia64/kernel/. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fjitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] update HP CSR space discovery via ACPIBjorn Helgaas2006-04-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get rid of the manual search of _CRS, in favor of acpi_get_vendor_resource() which is now provided by the ACPI CA. And fall back to searching for a consumer-only address space descriptor if no vendor-defined resource is found. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Wire up new syscalls {set,get}_robust_listTony Luck2006-04-06
| | | | | | | | | | | | | | | | | | Join the dots to enable Ingo's robut futex syscalls. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] 'msg' may be used uninitialized in xpc_initiate_allocate()Tony Luck2006-04-04
| | | | | | | | | | | | | | | | | | Found by gcc4.1 and reported by Dean Nelson. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Wire up new syscall sync_file_range()Tony Luck2006-04-04
| |/ | | | | | | | | | | Also reserve syscall numbers for {set,get}_robust_list Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [PATCH] x86_64: inline function prefix with __always_inline in vsyscallmao, bibo2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | In vsyscall function do_vgettimeofday(), some functions are declared as inlined, which is a hint for gcc to compile the function inlined but it not forced. Sometimes compiler does not compile the function as inlined, so here inline is replaced by __always_inline prefix. It does not happen in gcc compiler actually, but it possibly happens. Signed-off-by: bibo mao <bibo.mao@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Fix embarassing typo in mmconfig bus checkAndi Kleen2006-04-11
| | | | | | | | | | | | | | | | Surprising that it still worked at all with this - yes it was tested. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386/x86-64: Remove checks for value == NULL in PCI config space accessAndi Kleen2006-04-11
| | | | | | | | | | | | | | | | Nobody should pass NULL here. Could in theory make it a BUG, but the NULL pointer oops will do as well. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386: Remove bogus special case code from AMD core parsingAndi Kleen2006-04-11
| | | | | | | | | | | | | | | | | | | | It's not actually needed and would break non power of two number of cores. Follows similar earlier x86-64 patch. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: fix sync before RDTSC on Intel cpusSiddha, Suresh B2006-04-11
| | | | | | | | | | | | | | | | | | | | Commit c818a18146997d1356a4840b0c01f1168c16c8a4 didn't do the expected thing. This fix will remove the additional sync(cpuid) before RDTSC on Intel platforms.. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Remove check for canonical RIPAndi Kleen2006-04-11
| | | | | | | | | | | | | | | | As pointed out by Linus it is useless now because entry.S should handle it correctly in all cases. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86-64/i386: Don't process APICs/IO-APICs in ACPI when APIC is disabled.Andi Kleen2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When nolapic was passed or the local APIC was disabled for another reason ACPI would still parse the IO-APICs until these were explicitely disabled with noapic. Usually this resulted in a non booting configuration unless "nolapic noapic" was used. I also disabled the local APIC parsing in this case, although that's only cosmetic (suppresses a few printks) This hopefully makes nolapic work in all cases. Cc: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'splice' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2006-04-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] vfs: add splice_write and splice_read to documentation [PATCH] Remove sys_ prefix of new syscalls from __NR_sys_* [PATCH] splice: warning fix [PATCH] another round of fs/pipe.c cleanups [PATCH] splice: comment styles [PATCH] splice: add Ingo as addition copyright holder [PATCH] splice: unlikely() optimizations [PATCH] splice: speedups and optimizations [PATCH] pipe.c/fifo.c code cleanups [PATCH] get rid of the PIPE_*() macros [PATCH] splice: speedup __generic_file_splice_read [PATCH] splice: add direct fd <-> fd splicing support [PATCH] splice: add optional input and output offsets [PATCH] introduce a "kernel-internal pipe object" abstraction [PATCH] splice: be smarter about calling do_page_cache_readahead() [PATCH] splice: optimize the splice buffer mapping [PATCH] splice: cleanup __generic_file_splice_read() [PATCH] splice: only call wake_up_interruptible() when we really have to [PATCH] splice: potential !page dereference [PATCH] splice: mark the io page as accessed
| * | [PATCH] vfs: add splice_write and splice_read to documentationPekka J Enberg2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds the new splice_write and splice_read file operations to Documentation/filesystems/vfs.txt. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] Remove sys_ prefix of new syscalls from __NR_sys_*OGAWA Hirofumi2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | On i386, we don't use sys_ prefix for __NR_*. This patch removes it [FWIW, _syscall*() macros will generate foo() instead of sys_foo().] Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: warning fixAndrew Morton2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Andrew Morton <akpm@osdl.org> net/socket.c:148: warning: initialization from incompatible pointer type extern declarations in .c files! Bad boy. Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] another round of fs/pipe.c cleanupsIngo Molnar2006-04-11
| | | | | | | | | | | | | | | | | | | | | make pipe.c a bit more readable and hackable. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: comment stylesIngo Molnar2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | - capitalize consistently - end sentences in one way or another - update comment text to match the implementation Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: add Ingo as addition copyright holderJens Axboe2006-04-11
| | | | | | | | | | | | | | | | | | The comment is also somewhat out of date, correct that as well. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: unlikely() optimizationsJens Axboe2006-04-11
| | | | | | | | | | | | | | | | | | | | | Also corrects a few comments. Patch mainly from Ingo, changes by me. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: speedups and optimizationsJens Axboe2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Kill the local variables that cache ->nrbufs, they just take up space. - Only set do_wakeup for a real pipe. This is a big win for direct splicing. - Kill i_mutex lock around ->f_pos update, regular io paths don't do this either. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] pipe.c/fifo.c code cleanupsIngo Molnar2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | more code cleanups after the macro conversion: - standardize on 'struct pipe_inode_info *pipe' variable names - introduce 'pipe' temporaries to reduce mass inode->i_pipe dereferencing Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] get rid of the PIPE_*() macrosIngo Molnar2006-04-11
| | | | | | | | | | | | | | | | | | | | | get rid of the PIPE_*() macros. Scripted transformation. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: speedup __generic_file_splice_readJens Axboe2006-04-11
| | | | | | | | | | | | | | | | | | | | | Using find_get_page() is a lot faster than find_or_create_page(). This gets splice a lot closer to sendfile() for fd -> socket transfers. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: add direct fd <-> fd splicing supportJens Axboe2006-04-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's more efficient for sendfile() emulation. Basically we cache an internal private pipe and just use that as the intermediate area for pages. Direct splicing is not available from sys_splice(), it is only meant to be used for sendfile() emulation. Additional patch from Ingo Molnar to avoid the PIPE_BUFFERS loop at exit for the normal fast path. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: add optional input and output offsetsIngo Molnar2006-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | add optional input and output offsets to sys_splice(), for seekable file descriptors: asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, size_t len, unsigned int flags); semantics are straightforward: f_pos will be updated with the offset provided by user-space, before the splice transfer is about to begin. Providing a NULL offset pointer means the existing f_pos will be used (and updated in situ). Providing an offset for a pipe results in -ESPIPE. Providing an invalid offset pointer results in -EFAULT. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jens Axboe <axboe@suse.de>
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