- Sep 25, 2008
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Jeff Layton authored
cifs: explicitly revoke SPNEGO key after session setup The SPNEGO blob returned by an upcall can only be used once. Explicitly revoke it to make sure that we never pick it up again after session setup exits. This doesn't seem to be that big an issue on more recent kernels, but older kernels seem to link keys into the session keyring by default. That said, explicitly revoking the key seems like a reasonable thing to do here. Signed-off-by:
Jeff Layton <jlayton@redhat.com> Signed-off-by:
Steve French <sfrench@us.ibm.com>
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Nick Piggin authored
cifs: Convert cifs to new aops. This patch is based on the one originally posted by Nick Piggin. His patch was very close, but had a couple of small bugs. Nick's original comments follow: This is another relatively naive conversion. Always do the read upfront when the page is not uptodate (unless we're in the writethrough path). Fix an uninitialized data exposure where SetPageUptodate was called before the page was uptodate. SetPageUptodate and switch to writeback mode in the case that the full page was dirtied. Acked-by:
Shaggy <shaggy@austin.ibm.com> Acked-by:
Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by:
Nick Piggin <npiggin@suse.de> Signed-off-by:
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Steve French authored
Signed-off-by:
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Jeff Layton authored
cifs: remove NULL termination from rename target in CIFSSMBRenameOpenFIle The rename destination isn't supposed to be null terminated. Also, change the name string arg to be const. Signed-off-by:
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Jeff Layton authored
cifs: work around samba returning -ENOENT on SetFileDisposition call Samba seems to return STATUS_OBJECT_NAME_NOT_FOUND when we try to set the delete on close bit after doing a rename by filehandle. This looks like a samba bug to me, but a lot of servers will do this. For now, pretend an -ENOENT return is a success. Samba does however seem to respect the CREATE_DELETE_ON_CLOSE bit when opening files that already exist. Windows will ignore it, but so adding it to the open flags should be harmless. We're also currently ignoring the return code on the rename by filehandle, so no need to set rc based on it. Signed-off-by:
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Jeff Layton authored
cifs: fix inverted NULL check after kmalloc Signed-off-by:
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- Sep 24, 2008
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Steve French authored
We're given the datalen in the downcall, so there's no need to do any calls to strlen(). Just keep track of the datalen in the key. Finally, add a sanity check of the data in the downcall to make sure that it looks like a real IP address. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Steve French authored
Break out the code that does the actual renaming into a separate function and have cifs_rename call that. That function will attempt a path based rename first and then do a filehandle based one if it looks like the source is busy. The existing logic tried a path based rename first, but if we needed to remove the destination then it only attempted a filehandle based rename afterward. Not all servers support renaming by filehandle, so we need to always attempt path rename first and fall back to filehandle rename if it doesn't work. This also fixes renames of open files on windows servers (at least when the source and destination directories are the same). CC: Jeff Layton <jlayton@redhat.com> Signed-off-by: -
Jeff Layton authored
cifs: add function to set file disposition The proper way to set the delete on close bit on an already existing file is to use SET_FILE_INFO with an infolevel of SMB_FILE_DISPOSITION_INFO. Add a function to do that and have the silly-rename code use it. Signed-off-by:
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Steve French authored
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Jeff Layton authored
cifs: move rename and delete-on-close logic into helper function When a file is still open on the server, we attempt to set the DELETE_ON_CLOSE bit and rename it to a new filename. When the last opener closes the file, the server should delete it. This patch moves this mechanism into a helper function and has the two places in cifs_unlink that do this procedure call it. It also fixes the open flags to be correct. Signed-off-by:
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- Sep 23, 2008
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Jeff Layton authored
When the CIFS client goes to write out pages, it needs to pick a filehandle to write to. find_writeable_file however just picks the first filehandle that it finds. This can cause problems when a lock is issued against a particular filehandle and we pick a different filehandle to write to. This patch tries to avert this situation by having find_writable_file prefer filehandles that have a pid that matches the current task. This seems to fix lock test 11 from the connectathon test suite when run against a windows server. Signed-off-by:
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Pekka Enberg authored
GFP_KERNEL and GFP_NOFS are mutually exclusive. If you combine them, you end up with plain GFP_KERNEL which can deadlock in cases where you really want GFP_NOFS. Cc: Steve French <sfrench@samba.org> Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
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- Sep 17, 2008
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Steve French authored
We already have a cifs_set_file_info function that can flip DOS attribute bits. Have cifs_unlink call it to handle turning ATTR_HIDDEN on and ATTR_READONLY off when an unlink attempt returns -EACCES. This also removes a level of indentation from cifs_unlink. Signed-off-by:
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Jeff Layton authored
Change parameters to cifs_unlink to match the ones used in the generic VFS. Add some local variables to cut down on the amount of struct dereferencing that needs to be done, and eliminate some unneeded NULL pointer checks on the parent directory inode. Finally, rename pTcon to "tcon" to more closely match standard kernel coding style. Signed-off-by:
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- Sep 14, 2008
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Fix PCI_DMA_BUS_IS_PHYS for ARM [ARM] 5247/1: tosa: SW_EAR_IN support [ARM] 5246/1: tosa: add proper clock alias for tc6393xb clock [ARM] 5245/1: Fix warning about unused return value in drivers/pcmcia [ARM] OMAP: Fix MMC device data imx serial: fix rts handling for non imx1 based hardware imx serial: set RXD mux bit on i.MX27 and i.MX31 i.MX serial: fix init failure pcm037: add rts/cts support for serial port
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-devLinus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] LBA28/LBA48 off-by-one bug in ata.h sata_inic162x: enable LED blinking ata: duplicate variable sparse warning
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: re-add debug prints for unmodified BARs PCI: fix pciehp_free_irq() PCI Hotplug: fakephp: fix deadlock... again PCI: Fix printk warnings in setup-bus.c PCI: Fix printk warnings in probe.c PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: niu: panic on reset netlink: fix overrun in attribute iteration [Bluetooth] Fix regression from using default link policy ath9k: Assign seq# when mac80211 requests this
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Fix user_regset 'n' field values. sparc64: Fix PCI error interrupt registry on PSYCHO. sparc32: Fix function signature of of_bus_sbus_get_flags(). sparc64: Fix interrupt register calculations on Psycho and Sabre.
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Alex Dubov authored
- 8-bit interface mode never worked properly. The only adapter I have which supports the 8b mode (the Jmicron) had some problems with its clock wiring and they discovered it only now. We also discovered that ProHG media is more sensitive to the ordering of initialization commands. - Make the driver fall back to highest supported mode instead of always falling back to serial. The driver will attempt the switch to 8b mode for any new MSPro card, but not all of them support it. Previously, these new cards ended up in serial mode, which is not the best idea (they work fine with 4b, after all). - Edit some macros for better conformance to Sony documentation Signed-off-by:
Alex Dubov <oakad@yahoo.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Andrew Morton authored
Herton Krzesinski reports that the error-checking changes in 04ebd4ae ("block/ioctl.c and fs/partition/check.c: check value returned by add_partition") cause his buggy USB camera to no longer mount. "The camera is an Olympus X-840. The original issue comes from the camera itself: its format program creates a partition with an off by one error". Buggy devices happen. It is better for the kernel to warn and to proceed with the mount. Reported-by:
Herton Ronaldo Krzesinski <herton@mandriva.com.br> Cc: Abdel Benamrouche <draconux@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Ben Dooks authored
Fix the section mismatch warning generated by the incorrect naming of s3c24xx_spidrv which should be s3c24xx_spi_driver: WARNING: drivers/spi/spi_s3c24xx.o(.data+0x4): Section mismatch in reference from the variable s3c24xx_spidrv to the (unknown reference) .exit.text:(unknown) Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Haavard Skinnemoen authored
When suspending the system with atmel_lcdfb enabled, I sometimes see this: atmel_lcdfb atmel_lcdfb.0: FIFO underflow 0x10 Which can be explained by the fact that we're not stopping the LCD controller and its DMA engine when suspending, we're just gating the clocks to them. There's another potential issue which may be harder to trigger but much more nasty: If we gate the clocks at _just_ the right moment, e.g. when the DMA engine is doing a bus transaction, we may cause the DMA engine to violate the system bus protocol and cause a lockup. Avoid these issues by shutting down the LCD controller before entering suspend (and restarting it when resuming). This prevents the underrun from happening in the first place, and prevents whatever nastiness is happening when the bus clock stops in the middle of a DMA transfer. Signed-off-by:
Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
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Robin Holt authored
If you are on ia64 and you modprobe xpc then modprobe -r xpc, you immediately get a panic. xpc depends on xp which depends on gru for a symbol. That symbol is only used when we are running on UV hardware. Currently, the GRU driver detects we are not on UV hardware and does no initializing. It does not do the same check when unloading. As a result, the gru driver attempts to tear down stuff that was not setup. This is a simple two-line workaround to get us through this release. Once 2.6.28 is opened, we need to rework the symbols that xp is depending on from gru so the gru driver can properly fail to load when hardware is not available. Signed-off-by:
Robin Holt <holt@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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Ming Lei authored
It should be linux-uvc-devel@lists.berlios.de. Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by:
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David Brownell authored
Provide summary ABI docs about the /sys/class/gpio files. Signed-off-by:
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Mel Gorman authored
The iterator for_each_zone_zonelist() uses a struct zoneref *z cursor when scanning zonelists to keep track of where in the zonelist it is. The zoneref that is returned corresponds to the the next zone that is to be scanned, not the current one. It was intended to be treated as an opaque list. When the page allocator is scanning a zonelist, it marks elements in the zonelist corresponding to zones that are temporarily full. As the zonelist is being updated, it uses the cursor here; if (NUMA_BUILD) zlc_mark_zone_full(zonelist, z); This is intended to prevent rescanning in the near future but the zoneref cursor does not correspond to the zone that has been found to be full. This is an easy misunderstanding to make so this patch corrects the problem by changing zoneref cursor to be the current zone being scanned instead of the next one. Signed-off-by:Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: <stable@kernel.org> [2.6.26.x] Signed-off-by:
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Ned Forrester authored
Fixes two DMA bugs in the pxa2xx_spi driver. The first bug is in all versions of this driver; the second was introduced in the 2.6.20 kernel, and prevents using the driver with chips like m25p16 flash (which can issue large DMA reads). 1. Zero length transfers are permitted for use to insert timing, but pxa2xx_spi.c will fail if this is requested in DMA mode. Fixed by using programmed I/O (PIO) mode for such transfers. 2. Transfers larger than 8191 are not permitted in DMA mode. A test for length rejects all large transfers regardless of DMA or PIO mode. Worked around by rejecting only large transfers with DMA mapped buffers, and forcing all other transfers larger than 8191 to use PIO mode. A rate limited warning is issued for DMA transfers forced to PIO mode. This patch should apply to all kernels back to and including 2.6.20; it was test patched against 2.6.20. An additional patch would be required for older kernels, but those versions are very buggy anyway. Signed-off-by:Ned Forrester <nforrester@whoi.edu> Cc: Vernon Sauder <vernoninhand@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by:
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Ned Forrester authored
Fixes several chipselect bugs in the pxa2xx_spi driver. These bugs are in all versions of this driver and prevent using it with chips like m25p16 flash. 1. The spi_transfer.cs_change flag is handled too early: before spi_transfer.delay_usecs applies, thus making the delay ineffective at holding chip select. 2. spi_transfer.delay_usecs is ignored on the last transfer of a message (likewise not holding chipselect long enough). 3. If spi_transfer.cs_change is set on the last transfer, the chip select is always disabled, instead of the intended meaning: optionally holding chip select enabled for the next message. Those first three bugs were fixed with a relocation of delays and chip select de-assertions. 4. If a message has the cs_change flag set on the last transfer, and had the chip select stayed enabled as requested (see 3, above), it would not have been disabled if the next message is for a different chip. Fixed by dropping chip select regardless of cs_change at end of a message, if there is no next message or if the next message is for a different chip. This patch should apply to all kernels back to and including 2.6.20; it was test patched against 2.6.20. An additional patch would be required for older kernels, but those versions are very buggy anyway. Signed-off-by: -
Peter Korsgaard authored
Error out on transfer length != multiple of bytes per word with -EINVAL. Fixes a buffer overrun crash if length < bytes per word. Signed-off-by:
Peter Korsgaard <jacmet@sunsite.dk> Acked-by:
Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by:
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Peter Korsgaard authored
Commit a61f5345 (spi_mpc83xx clockrate fixes) broke clockrate calculation for low speeds. SPMODE_DIV16 should be set if the divider is higher than 64, not only if the divider gets clipped to 1024. Furthermore, the clipping check was off by a factor 16 as well. Signed-off-by:
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Hugh Dickins authored
A "Quicklists: 0 kB" line has just started appearing in /proc/meminfo, but most architectures (including x86) don't have them configured, so #ifdef it, like the highmem lines. And those architectures which do have quicklists configured are using them for page tables: so let's place it next to PageTables. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Acked-by:
Christoph Lameter <cl@linux-foundation.org> Acked-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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Eric Sesterhenn authored
This fixes: ============================================= [ INFO: possible recursive locking detected ] 2.6.27-rc5-00283-g70bb0896 #68 --------------------------------------------- touch/6855 is trying to acquire lock: (&info->bfs_lock){--..}, at: [<c02262f5>] bfs_delete_inode+0x9e/0x18c but task is already holding lock: (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187 other info that might help us debug this: 2 locks held by touch/6855: #0: (&type->i_mutex_dir_key#5){--..}, at: [<c018ad13>] do_filp_open+0x10b/0x62f #1: (&info->bfs_lock){--..}, at: [<c0226c00>] bfs_create+0x45/0x187 stack backtrace: Pid: 6855, comm: touch Not tainted 2.6.27-rc5-00283-g70bb0896 #68 [<c013e769>] validate_chain+0x458/0x9f4 [<c013bece>] ? trace_hardirqs_off+0xb/0xd [<c013f36b>] __lock_acquire+0x666/0x6e0 [<c013f440>] lock_acquire+0x5b/0x77 [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c06aab74>] mutex_lock_nested+0xbc/0x234 [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c02262f5>] ? bfs_delete_inode+0x9e/0x18c [<c02262f5>] bfs_delete_inode+0x9e/0x18c [<c0226257>] ? bfs_delete_inode+0x0/0x18c [<c01925e1>] generic_delete_inode+0x94/0xfe [<c019265d>] generic_drop_inode+0x12/0x12f [<c0191b7e>] iput+0x4b/0x4e [<c0226d1e>] bfs_create+0x163/0x187 [<c0188b42>] vfs_create+0xa6/0x114 [<c018adb5>] do_filp_open+0x1ad/0x62f [<c0107cdc>] ? native_sched_clock+0x82/0x96 [<c06ac309>] ? _spin_unlock+0x27/0x3c [<c019379e>] ? alloc_fd+0xbf/0xc9 [<c06ae2f4>] ? sub_preempt_count+0x9d/0xab [<c019379e>] ? alloc_fd+0xbf/0xc9 [<c0180391>] do_sys_open+0x42/0xb8 [<c041d564>] ? trace_hardirqs_on_thunk+0xc/0x10 [<c0180449>] sys_open+0x1e/0x26 [<c01038bd>] sysenter_do_call+0x12/0x31 ======================= The problem is that we don't unlock the bfs->lock mutex before calling iput (we do in the other cases). Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Signed-off-by:
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Hidehiro Kawai authored
There is no description of bit 4 of coredump_filter in the documentation. This patch adds it. Signed-off-by:
Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Roland McGrath <roland@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Acked-by:
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Li Zefan authored
If all the cpus in a cpuset are offlined, the tasks in it will be moved to the nearest ancestor with non-empty cpus. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> Acked-by:
Paul Jackson <pj@sgi.com> Cc: Paul Menage <menage@google.com> Signed-off-by:
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Li Zefan authored
After the patch: commit 0b2f630a Author: Miao Xie <miaox@cn.fujitsu.com> Date: Fri Jul 25 01:47:21 2008 -0700 cpusets: restructure the function update_cpumask() and update_nodemask() It might happen that 'echo 0 > /cpuset/sub/cpus' returned failure but 'cpus' has been changed, because cpus was changed before calling heap_init() which may return -ENOMEM. This patch restores the orginal behavior. Signed-off-by:
Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Cc: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by:
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Hiroshi DOYU authored
akpm: these have no callers at this time, but they shall soon, so let's get them right. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by:
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Alexey Dobriyan authored
Print parent directory name as well. The aim is to catch non-creation of parent directory when proc_mkdir will return NULL and all subsequent registrations go directly in /proc instead of intended directory. Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Taisuke Yamada authored
I recently bought 3 HGST P7K500-series 500GB SATA drives and had trouble accessing the block right on the LBA28-LBA48 border. Here's how it fails (same for all 3 drives): # dd if=/dev/sdc bs=512 count=1 skip=268435455 > /dev/null dd: reading `/dev/sdc': Input/output error 0+0 records in 0+0 records out 0 bytes (0 B) copied, 0.288033 seconds, 0.0 kB/s # dmesg ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata1.00: BMDMA stat 0x25 ata1.00: cmd c8/00:08:f8:ff:ff/00:00:00:00:00/ef tag 0 dma 4096 in res 51/04:08:f8:ff:ff/00:00:00:00:00/ef Emask 0x1 (device error) ata1.00: status: { DRDY ERR } ata1.00: error: { ABRT } ata1.00: configured for UDMA/33 ata1: EH complete ... After some investigations, it turned out this seems to be caused by misinterpretation of the ATA specification on LBA28 access. Following part is the code in question: === include/linux/ata.h === static inline int lba_28_ok(u64 block, u32 n_block) { /* check the ending block number */ return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); } HGST drive (sometimes) fails with LBA28 access of {block = 0xfffffff, n_block = 1}, and this behavior seems to be comformant. Other drives, including other HGST drives are not that strict, through. >From the ATA specification: (http://www.t13.org/Documents/UploadedDocuments/project/d1410r3b-ATA-ATAPI-6.pdf) 8.15.29 Word (61:60): Total number of user addressable sectors This field contains a value that is one greater than the total number of user addressable sectors (see 6.2). The maximum value that shall be placed in this field is 0FFFFFFFh. So the driver shouldn't use the value of 0xfffffff for LBA28 request as this exceeds maximum user addressable sector. The logical maximum value for LBA28 is 0xffffffe. The obvious fix is to cut "- 1" part, and the patch attached just do that. I've been using the patched kernel for about a month now, and the same fix is also floating on the net for some time. So I believe this fix works reliably. Just FYI, many Windows/Intel platform users also seems to be struck by this, and HGST has issued a note pointing to Intel ICH8/9 driver. "28-bit LBA command is being used to access LBAs 29-bits in length" http://www.hitachigst.com/hddt/knowtree.nsf/cffe836ed7c12018862565b000530c74/b531b8bce8745fb78825740f00580e23 Also, *BSDs seems to have similar fix included sometime around ~2004, through I have not checked out exact portion of the code. Signed-off-by:Taisuke Yamada <tai@rakugaki.org> Signed-off-by:
Jeff Garzik <jgarzik@redhat.com>
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