- 07 Dec, 2006 40 commits
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Hisashi Hifumi authored
In the current jbd code, if a buffer on BJ_SyncData list is dirty and not locked, the buffer is refiled to BJ_Locked list, submitted to the IO and waited for IO completion. But the fsstress test showed the case that when a buffer was already submitted to the IO just before the buffer_dirty(bh) check, the buffer was not waited for IO completion. Following patch solves this problem. If it is assumed that a buffer is submitted to the IO before the buffer_dirty(bh) check and still being written to disk, this buffer is refiled to BJ_Locked list. Signed-off-by:
Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Cc: Jan Kara <jack@ucw.cz> Cc: "Stephen C. Tweedie" <sct@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Randy Dunlap authored
Always build hweight8/16/32/64() functions into the kernel so that loadable modules may use them. I didn't remove GENERIC_HWEIGHT since ALPHA_EV67, ia64, and some variants of UltraSparc(64) provide their own hweight functions. Fixes config/build problems with NTFS=m and JOYSTICK_ANALOG=m. Kernel: arch/x86_64/boot/bzImage is ready (#19) Building modules, stage 2. MODPOST 94 modules WARNING: "hweight32" [fs/ntfs/ntfs.ko] undefined! WARNING: "hweight16" [drivers/input/joystick/analog.ko] undefined! WARNING: "hweight8" [drivers/input/joystick/analog.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Signed-off-by:Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Stephane Eranian authored
Remove the carta_random32.h header file. The carta_random32() function was was put in and removed in favor of random32(). In the removal process, the header file was forgotten. Signed-off-by:
Stephane Eranian <eranian@hpl.hp.com> Signed-off-by:
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Randy Dunlap authored
Add kernel .config file to REPORTING-BUGS. Signed-off-by:
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Riku Voipio authored
According to the datasheet rs5c372 supports three different methods for reading register values. Change from method #1 to method #3, since method #3 is the only one that works on Thecus N2100 board with this RTC. Signed-off-by:
Riku Voipio <riku.voipio@movial.fi> Cc: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by:
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Vladimir V. Saveliev authored
We add a save link for O_DIRECT writes to protect the i_size against the crashes before we actually finish the I/O. If we hit an -ENOSPC in aops->prepare_write(), we would do a truncate() to release the blocks which might have got initialized. Now the truncate would add another save link for the same inode causing a reiserfs panic for having multiple save links for the same inode. Signed-off-by:
Vladimir V. Saveliev <vs@namesys.com> Signed-off-by:
Amit Arora <amitarora@in.ibm.com> Signed-off-by:
Suzuki K P <suzuki@in.ibm.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Chris Mason <mason@suse.com> Signed-off-by:
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Chris Caputo authored
At present show_state prints a header the does not match the output of show_task, as follows: - sibling task PC pid father child younger older init S 00000000 0 1 0 2 (NOTLB) - This patch corrects the output of show_state so that the header is aligned with the data, ala: - free sibling task PC stack pid father child younger older init S 00000000 0 1 0 2 (NOTLB) - Signed-off-by:Chris Caputo <ccaputo@alt.net> Signed-off-by:
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BP, Praveen authored
In the functions do_proc_dointvec() and do_proc_doulongvec_minmax(), there seems to be a bug in string length calculation if string contains negative integer. The console log given below explains the bug. Setting negative values may not be a right thing to do for "console log level" but then the test (given below) can be used to demonstrate the bug in the code. # echo "-1 -1 -1 -123456" > /proc/sys/kernel/printk # cat /proc/sys/kernel/printk -1 -1 -1 -1234 # # echo "-1 -1 -1 123456" > /proc/sys/kernel/printk # cat /proc/sys/kernel/printk -1 -1 -1 1234 # (akpm: the bug is that 123456 gets truncated) It works as expected if string contains all +ve integers # echo "1 2 3 4" > /proc/sys/kernel/printk # cat /proc/sys/kernel/printk 1 2 3 4 # The patch given below fixes the issue. Signed-off-by:
Praveen BP <praveenbp@ti.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Akinobu Mita authored
Initialization synclink_gt forgot to unregister pci driver on error path. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by:
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Akinobu Mita authored
Check the return value of platform_device_register_simple(). Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Akinobu Mita authored
Check register_filesystem() and kern_mount() return values. Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by:
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Yan Burman authored
Replace kmalloc+memset with kzalloc Signed-off-by:
Yan Burman <burman.yan@gmail.com> Signed-off-by:
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Maciej W. Rozycki authored
This a set of fixes mostly to make the driver actually work: 1. Actually select the line for setting parameters and receiver disable/enable. 2. Select the line for receive and transmit interrupt handling correctly. 3. Report the transmitter empty state correctly. 4. Set the I/O type of ports correctly. 5. Perform polled transmission correctly. 6. Don't fix the console line at ttyS3. 7. Magic SysRq support. 8. Various small bits here and there. Tested with a DECstation 2100 (thanks Flo for making this possible). [akpm@osdl.org: fix typo] Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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Gautham R Shenoy authored
Provide a common interface for all the subsystems to lock and unlock their per-subsystem hotcpu mutexes. When CONFIG_HOTPLUG_CPU is not set, these operations would be no-ops. [akpm@osdl.org: macros -> inlines] Signed-off-by:
Gautham R Shenoy <ego@in.ibm.com> Signed-off-by:
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Ralf Baechle authored
Pass struct dev pointer to dma_cache_sync() dma_cache_sync() is ill-designed in that it does not have a struct device pointer argument which makes proper support for systems that consist of a mix of coherent and non-coherent DMA devices hard. Change dma_cache_sync to take a struct device pointer as first argument and fix all its callers to pass it. Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Ralf Baechle authored
dma_is_consistent() is ill-designed in that it does not have a struct device pointer argument which makes proper support for systems that consist of a mix of coherent and non-coherent DMA devices hard. Change dma_is_consistent to take a struct device pointer as first argument and fix the sole caller to pass it. Signed-off-by:
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Eric Dumazet authored
On 32bits SMP platforms, 64bits i_size is protected by a seqcount (i_size_seqcount). When i_size is read or written, i_size_seqcount is read/written as well, so it make sense to group these two fields together in the same cache line. This patch moves i_size_seqcount next to i_size, and also moves i_version to let offsetof(struct inode, i_size) being 0x40 instead of 0x3c (for 32bits platforms). For 64 bits platforms, i_size_seqcount doesnt exist, and the move of a 'long i_version' should not introduce a new hole because of padding. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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Randy Dunlap authored
Be more careful about function pointer args: look for "(...*" instead of just "(". This line in include/linux/input.h fools the current kernel-doc script into deciding that this is a function pointer: unsigned long ffbit[NBITS(FF_MAX)]; Signed-off-by: -
Burman Yan authored
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Eric Dumazet authored
We currently insert socket dentries into the global dentry hashtable. This is suboptimal because there is currently no way these entries can be used for a lookup(). (/proc/xxx/fd/xxx uses a different mechanism). Inserting them in dentry hashtable slows dcache lookups. To let __dpath() still work correctly (ie not adding a " (deleted)") after dentry name, we do : - Right after d_alloc(), pretend they are hashed by clearing the DCACHE_UNHASHED bit. - Call d_instantiate() instead of d_add() : dentry is not inserted in hash table. __dpath() & friends work as intended during dentry lifetime. - At dismantle time, once dput() must clear the dentry, setting again DCACHE_UNHASHED bit inside the custom d_delete() function provided by socket code, so that dput() can just kill_it. Signed-off-by:
"David S. Miller" <davem@davemloft.net> Signed-off-by:
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Eric Dumazet authored
Some dentries don't need to be globally visible in dentry hashtable. (pipes & sockets) Such dentries dont need to wait for a RCU grace period at delete time. Being able to free them permits a better CPU cache use (hot cache) This patch combined with (dont insert pipe dentries into dentry_hashtable) reduced time of { pipe(p); close(p[0]); close(p[1]);} on my UP machine (1.6 GHz Pentium-M) from 3.23 us to 2.86 us (But this patch does not depend on other patches, only bench results) Signed-off-by: -
Eric Dumazet authored
We currently insert pipe dentries into the global dentry hashtable. This is suboptimal because there is currently no way these entries can be used for a lookup(). (/proc/xxx/fd/xxx uses a different mechanism). Inserting them in dentry hashtable slows dcache lookups. To let __dpath() still work correctly (ie not adding a " (deleted)") after dentry name, we do : - Right after d_alloc(), pretend they are hashed by clearing the DCACHE_UNHASHED bit. - Call d_instantiate() instead of d_add() : dentry is not inserted in hash table. __dpath() & friends work as intended during dentry lifetime. - At dismantle time, once dput() must clear the dentry, setting again DCACHE_UNHASHED bit inside the custom d_delete() function provided by pipe code, so that dput() can just kill_it. This patch, combined with (avoid RCU for never hashed dentries) reduced time of { pipe(p); close(p[0]); close(p[1]);} on my UP machine (1.6GHz Pentium-M) from 3.23 us to 2.86 us (But this patch does not depend on other patches, only bench results) Signed-off-by: -
Eric Dumazet authored
On some workloads, (for example when lot of close() syscalls are done), RCU qlen can be quite large, and RCU heads are no longer in cpu cache when rcu_do_batch() is called. This patch adds a prefetch() in rcu_do_batch() to give CPU a hint to bring back cache lines containing 'struct rcu_head's. Most list manipulations macros include prefetch(), but not open coded ones (at least with current C compilers :) ) I got a nice speedup on a trivial benchmark (3.48 us per iteration instead of 3.95 us on a 1.6 GHz Pentium-M) while (1) { pipe(p); close(fd[0]); close(fd[1]);} Signed-off-by: -
Randy Dunlap authored
Remove the videodev chapter from the kernel-api book. It's done much better in the videobook kernel-doc. Signed-off-by:
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Randy Dunlap authored
Correct lots of typos, kernel-doc warnings, & kernel-doc usage in fusion and i2o drivers. Signed-off-by:
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Randy Dunlap authored
Add Fusion and I2O message-based device interfaces to kernel-api book. Signed-off-by:
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Randy Dunlap authored
When CONFIG_TOSHIBA=y and CONFIG_FB_NEOMAGIC=m, tosh_smm() needs to be exported for neofb to use it. WARNING: "tosh_smm" [drivers/video/neofb.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Signed-off-by:
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Randy Dunlap authored
Building CCISS SCSI tape support in-kernel when SCSI=m causes build errors, so require SCSI support to be =y or same as CCISS SCSI tape support. drivers/built-in.o: In function `cciss_remove_one': cciss.c:(.text+0x79d4c): undefined reference to `scsi_remove_host' cciss.c:(.text+0x79d55): undefined reference to `scsi_host_put' drivers/built-in.o: In function `cciss_update_non_disk_devices': cciss.c:(.text+0x7bb54): undefined reference to `scsi_device_type' cciss.c:(.text+0x7bcc8): undefined reference to `scsi_device_type' cciss.c:(.text+0x7be81): undefined reference to `scsi_device_type' cciss.c:(.text+0x7bf81): undefined reference to `scsi_device_type' drivers/built-in.o: In function `cciss_proc_write': cciss.c:(.text+0x7c175): undefined reference to `scsi_host_alloc' cciss.c:(.text+0x7c1ed): undefined reference to `scsi_add_host' cciss.c:(.text+0x7c1f9): undefined reference to `scsi_scan_host' cciss.c:(.text+0x7c206): undefined reference to `scsi_host_put' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by:
Mike Miller <mike.miller@hp.com> Signed-off-by:
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Yoichi Yuasa authored
[akpm@osdl.org: bugfix] Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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David Brownell authored
This creates a new RTC-framework driver for the RTC/calendar module found in various OMAP1 chips. (OMAP2 and OMAP3 use external RTCs, like those in TI's multifunction PM companion chips.) It's been in the Linux-OMAP tree for several months now, and other trees before that, so it's quite stable. The most notable issue is that the OMAP IRQ code doesn't yet support the RTC IRQ as a wakeup event. Once that's fixed, a patch will be needed. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Acked-by:
Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Randy Dunlap authored
When CONFIG_HOTPLUG=n, agp_amd64_resume() calls nforce3_agp_init(), which is __devinit == __init, so has been discarded and is not usable for resume. WARNING: drivers/char/agp/amd64-agp.o - Section mismatch: reference to .init.text: from .text between 'agp_amd64_resume' (at offset 0x249) and 'amd64_tlbflush' Signed-off-by:
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Randy Dunlap authored
When CONFIG_HOTPLUG=n, parport_pc calls some __devinit == __init code that could be discarded. These calls are made from parport_irq_probe(), which is called from parport_pc_probe_port(), which is an exported symbol, so the calls could (possibly) happen after init time. WARNING: drivers/parport/parport_pc.o - Section mismatch: reference to .init.text: from .text between 'parport_irq_probe' (at offset 0x31d) and 'parport_pc_probe_port' WARNING: drivers/parport/parport_pc.o - Section mismatch: reference to .init.text: from .text between 'parport_irq_probe' (at offset 0x346) and 'parport_pc_probe_port' Signed-off-by:
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Adrian Bunk authored
Signed-off-by:
Adrian Bunk <bunk@stusta.de> Acked-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
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Adrian Bunk authored
Make the following needlessly global functions static: - nlm_lookup_host() - nsm_find() Signed-off-by:
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Adrian Bunk authored
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Adrian Bunk authored
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Adrian Bunk authored
Signed-off-by:
Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by:
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Randy Dunlap authored
With I2O_CONFIG=y and I2O_EXT_ADAPTEC=n, kernel build gets: drivers/message/i2o/i2o_config.c:1115: error: 'i2o_cfg_compat_ioctl' undeclared here (not in a function) Signed-off-by:
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Randy Dunlap authored
Handle __copy_from_user() return value. Noticed by inspection, not from build warning. Signed-off-by:
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Adrian Bunk authored
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