Kernel

Linux IO scalability and pushing over million IOPS over software iSCSI?
Maybe a native question, but why need 50 targets? Each target can only serve about 25K IOPS? A single ramdisk should be able to handle this. Where is the bottleneck? We had a similar experiment but with Infiniband and Lustre. It turn out Lustre has a rate limit in the RPC handling layer. Is it the same problem h... 22 Jun 2010 12:42

Dell PowerEdge 4200 scsi, worked in 2.6.18, not in 2.6.26 (LOW PRIORITY help request)
> Ultimately, I was wondering if anyone might be able to take a look at my dmesg's that might have any idea as to what feature might be new in .26 that could be responsible for the panic. Sadly, it takes about 5 hours to do a clean run of make-kpkg in debian on these machines, and I am not setup for distcc ... 22 Jun 2010 12:42

[PATCH -next] block/xd.c: fix brace typo
From: Randy Dunlap <randy.dunlap(a)oracle.com> Fix extra brace typo that is causing build errors. Signed-off-by: Randy Dunlap <randy.dunlap(a)oracle.com> --- drivers/block/xd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- linux-next-20100622.orig/drivers/block/xd.c +++ linux-next-20100622/driv... 22 Jun 2010 12:42

Bug#584846: Detects only 64MB and fails to boot on Intel Green City board if e820 hooked by GRUB2
On Mon, Jun 21, 2010 at 11:07:31PM -0700, H. Peter Anvin wrote: On 06/21/2010 10:22 PM, Josh Triplett wrote: How might I diagnose this further? What might cause Linux to refuse to use the e820 and e801 results provided by GRUB, but accept the ones provided by the BIOS? This is inte... 22 Jun 2010 12:42

[PATCHv3 4/5] mtd: mxc_nand fixups
The v2 version of this patch has 2 problems. I believe that this new version addresses the problems and still respects the strange behavior of the i.MX21. Problem 1: The v2 patch passes IRQF_NOAUTOEN to request_irq(), but that flag is not evaluated by request_irq(). That flag is only evaluated in set_irq_flags()... 22 Jun 2010 12:42

[RFC][PATCH 04/10] cifs: define server-level cache index objects and register them with FS-Cache
Define server-level cache index objects (as managed by TCP_ServerInfo structs). Each server object is created in the CIFS top-level index object and is itself an index into which superblock-level objects are inserted. Currently, the server objects are keyed by hostname. Signed-off-by: Suresh Jayaraman <sjayaram... 22 Jun 2010 12:42

[RFC][PATCH 03/10] cifs: register CIFS for caching
Define CIFS for FS-Cache and register for caching. Upon registration the top-level index object cookie will be stuck to the netfs definition by FS-Cache. Signed-off-by: Suresh Jayaraman <sjayaraman(a)suse.de> --- fs/cifs/Makefile | 2 ++ fs/cifs/cache.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++... 22 Jun 2010 12:42

[RFC][PATCH 01/10] cifs: add kernel config option for CIFS Client caching support
Add a kernel config option to enable local caching for CIFS. Signed-off-by: Suresh Jayaraman <sjayaraman(a)suse.de> --- fs/cifs/Kconfig | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig index 80f3525..5739fd7 100644 --- a/fs/cifs/Kconfig +++ b/f... 22 Jun 2010 12:42

[RFC][PATCH 08/10] cifs: store pages into local cache
Store pages from an CIFS inode into the data storage object associated with that inode. Signed-off-by: Suresh Jayaraman <sjayaraman(a)suse.de> --- fs/cifs/file.c | 6 ++++++ fs/cifs/fscache.c | 13 +++++++++++++ fs/cifs/fscache.h | 11 +++++++++++ 3 files changed, 30 insertions(+), 0 deletions(-) d... 22 Jun 2010 12:42

[RFC][PATCH 00/10] cifs: local caching support using FS-Cache
This patchset is a first stab at adding persistent, local caching facility for CIFS using the FS-Cache interface. The index hierarchy which is mainly used to locate a file object or discard a certain subset of the files cached, currently has three levels: - Server - Share - File The server index object i... 22 Jun 2010 12:42