- 15 Nov, 2004 40 commits
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Neil Brown authored
10 weeks ago, http://linux.bkbits.com:8080/linux-2.5/cset@415b3380pxf4sB97gM8ujLqDxi6GfQ The patch was mostly right, and fixed a real problem, but missed a bit. It passed the job of checking if an inode had a current alias off to d_find_alias instead of open-coding it in d_alloc_anon. However there is one case where d_alloc_anon would not return the right dentry. That case being when the inode was for the root of the filesystem. The root is a special case because it is not hashed. All other dentries that are not hashed are quite un-interesting: There are "unlinked" but not yet closed. The root of a filesystem is unhashed, but is interesting. Allowing d_find_alias to return an unhashed alias for a directory solves this problem. It is safe because callers of d_find_alias on a directory inode either have a name for the inode already (so finding an unlinked directory by mistake is impossible) or will soon be looking for a name and will drop the dentry if a name is not found. Signed-off-by:
Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Dave Kleikamp authored
I was looking through the radix tree code and came across what I think is a bug in radix_tree_delete. for (idx = 0; idx < RADIX_TREE_TAG_LONGS; idx++) { if (pathp[0].node->tags[tag][idx]) { tags[tag] = 1; nr_cleared_tags--; break; } } The above loop should only be executed if tags[tag] is zero. Otherwise, when walking up the tree, we can decrement nr_cleared_tags twice or more for the same value of tag, thus potentially exiting the outer loop too early. Ensure that nr_cleared_tags is only decremented once for each tag. Signed-off-by:Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
From: Andreas Herrmann <aherrman@de.ibm.com> From: Maxim Shchetynin <maxim@de.ibm.com> zfcp host adapter changes: - Add access control enhancements. - Add event callbacks. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
From: Volker Sameske <sameske@de.ibm.com> zfcp host adapter: - Add read-only lun sharing feature. Signed-off-by:
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Martin Schwidefsky authored
From: Andreas Herrmann <aherrman@de.ibm.com> zfcp host adapter change: - Avoid usage of unregister debug feature. - Avoid race when unregistering debug feature. - Corrected some log messages for WKA ports. - Don't pass NULL pointer to debug_register_view and debug_set_level. - Some coding style cleanup. - Fix race between scsi_add_device and deregistration of the adapter. - Shorten & rename zfcp_els/zfcp_els_handler. - Remove unused code for unused ELS commands. - Evaluate response instead of request in adisc handler. - Allocate qdio queue structures below 2GB. - Remove ifdefs around ioctl32.h. - Use CONFIG_COMPAT instead of CONFIG_S390_SUPPORT. - Use semaphore in zfcp_ccw_shutdown. - Strip down debug_register/debug_unregister. Signed-off-by:
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Martin Schwidefsky authored
From: Eric Rossman <edrossma@us.ibm.com> s390 crypto driver changes: - Small cleanup: misc -> crypto, header file defines, variable names and a printk message. Signed-off-by:
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Martin Schwidefsky authored
From: Gerald Schaefer <geraldsc@de.ibm.com> Docu for the z/VM monitor record read access feature. Signed-off-by:
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Martin Schwidefsky authored
3270 console driver changes: - Add error handling in 3270 device startup. - Do halt_io if startup has been interrupted. - Fix reference counting in tty timers. - Simplify set_timer functions. Signed-off-by:
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Martin Schwidefsky authored
From: Stefan Weinhuber <wein@de.ibm.com> dasd driver changes: - Fix parameter parsing to allow sequences of devices, ranges and keywords. Signed-off-by:
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Martin Schwidefsky authored
From: Cornelia Huck <cohuck@de.ibm.com> From: Thomas Spatzier <tspat@de.ibm.com> common i/o layer changes: - Prevent double unregister of ccw devices. - Move unregister out of the subchannel remove function, to avoid live-lock due to hotplug if the root device is currently indisposed. - Delete pending timer after a machine check. - Revert change to allocate qdio queues and SLIBS in DMA memory. - Decrement ccw_device_init_count only after ccw_device_register is done. - Remove unnecessary check in ccw_hotplug. Signed-off-by:
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Martin Schwidefsky authored
From: Stefan Bader <shbader@de.ibm.com> From: Martin Schwidefsky <schwidefsky@de.ibm.com> s390 core changes: - Store correct set of registers to core dumps. - Fix make install with separate obj directory. - Regenerate default configuration. Signed-off-by:
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Jeff Dike authored
Update defconfig. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Jeff Dike authored
Bodo pointed out that arch/um/kernel/skas/exec_user.c is dead code, so this removes it. Signed-off-by:
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Jeff Dike authored
Remove an unused declaration of time_stamp(). Signed-off-by:
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Jeff Dike authored
Add ARCH_USER_CFLAGS so the arches can modify USER_CFLAGS. We now take __ARCH_WANT_OLD_STAT and __ARCH_WANT_STAT64 from the base arch so that the LFS-64 code gets included or excluded automatically. Signed-off-by:
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Jeff Dike authored
Some definitions of pte_unmap_* macros were written for HIGHPTE, which UML doesn't support. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> This one covers the fact, that the SIGSEGV signal, which is created by force_sigsegv() in case of an error in handle_signal(), is not delivered to the user immediately. In the worst case it even could be masked if a sigprocmask() systemcall follows immediately after return from kernel. The patch is relevant for other architectures, too. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> If the user stack limit is reached or the signal stack assigned with sigaltstack() is invalid when a user signal handler with SA_ONSTACK has to be started, the signal mask of the interrupted user program is modified. This happens because the mask, that should be used with the handler only, is written to "current->blocked" even if the handler could not be started. But without a handler, no rewrite of the original mask at sys_sigreturn will be done. A slightly different case is sys_sigsuspend(), where the mask is already modified when kern_do_signal() is started. "*oldset" and "current->blocked" are not equal here and thus current->blocked has to be set to *oldset, if an error occurs in handle_signal(). For both cases I've written small tests, and with the patch the result is OK. This issue is relevant for other architectures too (e.g. i386, I've seen). Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> This makes the UML signal frame construction interface somewhat more similar to x86 than before. Also, some small code cleanup, and checking for errors before changing the signal mask in the SA_NODEFER case. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> handle_signal now checks whether it is being called from a system call invocation. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Move the signal delivery code around to eliminate a couple of temporary variables. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Change the interface to handle_signal so that it doesn't take the system call return value as an argument and eliminate its return value. kern_do_signal also now doesn't return immediately after determining that there is no signal to deliver. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Change the do_signal interface to eliminate its argument. Also, remove the calls from the system call handlers since they are redundant. In all cases, pending signals are checked for in the interrupt handler. Temporarily, do_signal passes the current error to kern_do_signal. Signed-off-by:
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Jeff Dike authored
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Change the valid system call numbers to reflect the possibility that we could have __NR_restart_syscall. Signed-off-by:
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Jeff Dike authored
64-bit cleanliness - Fix the number of bits of the time_t field in the COW header to be 32 and change an int to a longs. Signed-off-by:
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Jeff Dike authored
64-bit cleanup - this fixes the return values of the system calls to be longs. Signed-off-by:
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Jeff Dike authored
This patch fixes a bug introduced in the last batch of signal fixes. The system call return value should only be reset if called diectly from a system call, i.e. sigsuspend. The fixes added earlier caused any interrupted non-zero system call return to be reset, confusing fork and vfork, among others. Signed-off-by:
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Hirokazu Takata authored
This patch is for updating GDB initalization files (dot.gdbinit*) for all m32r target boards. Currently, part of dot.gdbinit* files are maintained by using a "gen_gdbinit" script. http://www.linux-m32r.org/eng/download.html#othertoolsSigned-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
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Hirokazu Takata authored
- Update io_mappi2.c to access a CF device as an IDE disk device for Mappi2 eva board. - Please set CONFIG_M32R_CFC=n, when you use m32r-g00ff for CF boot. Signed-off-by:
NIIBE Yutaka <gniibe@fsij.org> Signed-off-by:
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Hirokazu Takata authored
This patchset was originally from NIIBE Yutaka. These patch update the m32r kernel for a new bootloader "m32r-g00ff". The "m32r-g00ff" has been written and developed by NIIBE Yutaka, and released under the GPL from http://www.gniibe.org/. So far, it supports two types of booting operations, CF boot and Network boot (HTTP boot). * CF boot - boot from CompactFlash or Microdrive(TM) We can boot a kernel from CF device. To make use of m32r-g00ff, we just put a first stage IPL(initial program loader) into a flash memory, and a secondary bootloader into CF media device. Currently, LILO-21.4.4 can be used to write m32r-g00ff into the boot sector of CF device on a cross development environment. * HTTP boot - boot via network with HTTP protocol By using m32r-g00ff, we can download and boot a kernel image from a web-server. The m32r-g00ff downloads a kernel image from a given URL, resolving the webserver's IP address by DNS. As a preparation, we just place a secondary bootloader binary and a kernel image on the webserver. - Position-independent zImage support; this aims at removing constraints of zImage(vmlinuz)'s location. Signed-off-by:
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Yoshinori Sato authored
- duplicate define section delete. - fix CONFIG_ROMKERNEL. Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Yoshinori Sato authored
read{b,w,l} and write{b,w,l} compile error fix. Signed-off-by: -
Yoshinori Sato authored
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Yoshinori Sato authored
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Randy Dunlap authored
put function prototype outside of #ifdef block, to fix: arch/x86_64/kernel/time.c:941: warning: implicit declaration of function `oem_force_hpet_timer' Signed-off-by:
Randy Dunlap <rddunlap@osdl.org> Cc: <ak@muc.de> Signed-off-by:
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Maciej W. Rozycki authored
Both detect_init_APIC() and init_apic_mappings() it's called from are invoked early, before the command line has been processed. Therefore its meaningless to call apic_printk() from them as that depends on apic_verbosity which is initialized from the command line. I could move apic_verbosity initialization to parse_cmdline_early(), but I think that would be an overkill, the point being we are initerested in feedback from detect_init_APIC() anyway. Without that it's hard to tell what's really going on as it's been the case with the recent report of the local APIC being non-functional despite the whole setup being apparently correct. So I converted these calls to ordinary printk() invocations. The init_apic_mappings() are less interesting, so I've made them output at the debug level. While at it I've made some obvious nearby formatting clean-up. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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Fenghua Yu authored
The patch adds cpu_relax() in the body of some spin loops for 2.6.9. The patch also removes redundant barrier() code after cpu_relax() on ia32. In the PAUSE instruction section, IA32 SDM claims "it is recommended that a PASUE instruction be placed in all spin-wait loops". And x86_64 SDM says that PAUSE instruction is same as legacy mode in IA-32e mode operation. This patch is against 2.6.9 (kernel.org). It was tested on ia32 and x86_64. Acked-by:
Andi Kleen <ak@muc.de> Signed-off-by:
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Stephen Rothwell authored
This patch fixes the PPC64 rtc driver where a pair of braces was missing. Not a big bug, but a bug none the less. Also, while I was there, use C99 initialisers. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Stephen Rothwell authored
This patch fixes the virtual cdrom driver to not share a single request queue. Sharing the queue causes an oops if you remove the module and more than one cdrom exists. Signed-off-by:
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