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* viafb: replace inb/outbFlorian Tobias Schandinat2010-05-071-15/+7
| | | | | | | | | | viafb: replace inb/outb This patch replaces occurences of inb/outb with via_write_reg and via_write_reg_mask where this is possible to improve code readability. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
* viafb: move some modesetting functions to a seperate fileFlorian Tobias Schandinat2010-05-075-102/+166
| | | | | | | | | | viafb: move some modesetting functions to a seperate file This patch moves the modesetting functions which are already cleaned up to a seperate file. Just the beginning to bring some structure in this mess. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
* viafb: unify modesetting functionsFlorian Tobias Schandinat2010-05-073-45/+46
| | | | | | | | | | | viafb: unify modesetting functions This patch unifies some cleaned up modesetting functions to prepare for moving them to an extra file. This includes make them use via_io and changing there names to reflect that they do not depend on anything framebuffer specific. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
* viafb: Reserve framebuffer memory for the upcoming camera driverJonathan Corbet2010-05-072-0/+26
| | | | | | | | | | | | | | | | | The camera engine captures to framebuffer memory, so we need to set some aside for that purpose. There is no proper memory allocator for fbmem; instead, accel.c just trims some space off the top. Alas, without creating that proper memory allocator, the only way to make this work is to hack it into the same bit of code in accel.c. The allocation must happen *after* the others (some code, including user-space XV stuff, makes assumptions on where the cursor space is), and before the rest of the framebuffer is set up. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Add a simple VX855 DMA engine driverJonathan Corbet2010-05-072-0/+261
| | | | | | | | | | | | This code provides a minimal amount of access to the DMA engine as needed by the camera driver. VX855 only; it's guaranteed not to work on other chipsets, so it won't try. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Add a simple interrupt management infrastructureJonathan Corbet2010-05-072-1/+107
| | | | | | | | | | | | The viafb device shares a single interrupt control register among several distinct subunits. This adds a simple layer for management of that register. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* via: Rationalize vt1636 detectionJonathan Corbet2010-05-071-13/+7
| | | | | | | | | | | The code was ugly and didn't check whether i2c operations were succeeding; make it a little better. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Introduce viafb_find_i2c_adapter()Jonathan Corbet2010-05-072-0/+14
| | | | | | | | | | The camera driver will need this to look up a specific adapter. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* via: Do not attempt I/O on inactive I2C adaptersJonathan Corbet2010-05-072-4/+11
| | | | | | | | | | | If an adapter has been configured for GPIO (or off), we should not try to use it as an I2C port. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Turn GPIO and i2c into proper platform devicesJonathan Corbet2010-05-076-41/+140
| | | | | | | | | | Another step toward making this thing a real multifunction device driver. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Convert GPIO and i2c to the new indexed port opsJonathan Corbet2010-05-074-26/+38
| | | | | | Also add low-level locking to the i2c driver. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: package often used basic io functionsFlorian Tobias Schandinat2010-05-073-25/+63
| | | | | | | | | | | | | | | This patch puts redesigned versions of the basic io functions that are used overall the driver in an extra header. It is prefixed with via_ as no framebuffer dependend stuff is in there. They were inlined as they are really simple which reduced the module size about 2.5%. The parameter order of read and write was fixed as it really doesn't make sense to change the order as they are parts of the same address and not source and destination. Wrapper which use the new functions were added to hw.h to replicate the old interface and avoid changing all old code. [jc: added one comment] Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
* viafb: add a driver for GPIO linesJonathan Corbet2010-05-075-1/+296
| | | | | | | | | | | | This is a simple gpiolib driver giving access to the GPIO lines in the VIA framebuffer system. A simple mechanism exists for switching lines between GPIO and I2C, but it's only compile-time for now. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Separate global and fb-specific dataJonathan Corbet2010-05-0712-185/+265
| | | | | | | | | | | | | | | This patch moves data of interest into a new viafb_dev structure which describes the device as a whole; the idea here is to create a separation between what all devices may need and what the framebuffer device in particular needs. I've also made some small steps toward thinning out the global.h mess. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Move core stuff into via-core.cJonathan Corbet2010-05-0710-132/+242
| | | | | | | | | | | | | The first step toward turning viafb into a multifunction driver. This patch creates a new via-core.c file which serves as the main PCI driver; everything else comes below that. Some work has been done to rationalize the i2c drivers in this new scheme. Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Cc: Harald Welte <laforge@gnumonks.org> Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Only establish i2c busses on ports that always had themJonathan Corbet2010-04-272-6/+14
| | | | | | | | | ...otherwise it seems we run into conflicts with shadowy other users which don't expect to see i2c taking control of ports it never used to do anything with. Reported-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* suppress verbose debug messages: change printk() to DEBUG_MSG()Paul Fox2010-04-271-2/+2
| | | | | | | | [jc: no signoff, added my own] Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: rework the I2C support in the VIA framebuffer driverHarald Welte2010-04-278-134/+182
| | | | | | | | | | | | | | | | | | | | This patch changes the way how the various I2C busses are used internally inside the viafb driver: Previosuly, only a single i2c_adapter was created, even though two different hardware I2C busses are accessed: A structure member in a global variable was modified to indicate the bus to be used. Now, all existing hardware busses are registered with the i2c core, and the viafb_i2c_{read,write}byte[s]() function take the adapter number as function call parameter, rather than referring to the global structure member. [jc: even more painful merge with mainline changes ->2.6.34] [jc: painful merge with OLPC changes] Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Add 1200x900 DCON/LCD panel modes for OLPC XO-1.5Chris Ball2010-04-206-1/+34
| | | | | | | | [jc: extensive merge conflict fixes] Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Chris Ball <cjb@laptop.org>
* viafb: complete support for VX800/VX855 accelerated framebufferJonathan Corbet2010-04-202-9/+73
| | | | | | | | | | | | | | | | | | | | | This patch is a painful merge of change a90bab567ece3e915d0ccd55ab00c9bb333fa8c0 (viafb: Add support for 2D accelerated framebuffer on VX800/VX855) in the OLPC tree, originally by Harald Welte. Harald's changelog read: The VX800/VX820 and the VX855/VX875 chipsets have a different 2D acceleration engine called "M1". The M1 engine has some subtle (and some not-so-subtle) differences to the previous engines, so support for accelerated framebuffer on those chipsets was disabled so far. This merge tries to preserve Harald's changes in the framework of the much-changed 2.6.34 viafb code. Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Determine type of 2D engine and store it in chip_infoHarald Welte2010-04-202-0/+23
| | | | | | | | This will help us for the upcoming support for 2D acceleration using the M1 engine. [jc: fixed merge conflicts] Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
* viafb: Unify duplicated set_bpp() codeJonathan Corbet2010-04-201-45/+33
| | | | | | | | | As suggested by Florian: make both mode-setting paths use the same code. Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Retain GEMODE reserved bitsJonathan Corbet2010-04-201-16/+33
| | | | | | | | | | | | Commit c3e25673843153ea75fda79a47cf12f10a25ca37 (viafb: 2D engine rewrite) changed the setting of the GEMODE register so that the reserved bits are no longer preserved. Fix that; at the same time, move this code to its own function and restore the use of symbolic constants. Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: Unmap the frame buffer on initialization errorJonathan Corbet2010-04-201-1/+3
| | | | | | | | | | | This was part of Harald's "make viafb a first-class citizen using pci_driver" patch, but somehow got dropped when that patch went into mainline. Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* viafb: use proper pci config APIHarald Welte2010-04-203-26/+44
| | | | | | | | | | This patch alters viafb to use the proper Linux in-kernel API to access PCI configuration space, rather than poking at I/O ports by itself. Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
* viafb: Fix various resource leaks during module_init()Harald Welte2010-04-201-13/+39
| | | | | | | | | | | | | | | | | The current code executed from module_init() in viafb does not have proper error checking and [partial] resoure release paths in case an error happens half way through driver initialization. This patch adresses the most obvious of those issues, such as a leftover i2c bus if module_init (and thus module load) fails. [jc: fixed merge conflicts] [jc: also restored -ENOMEM return on ioremap() fail] Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: ScottFang@viatech.com.cn Cc: JosephChan@via.com.tw Signed-off-by: Harald Welte <HaraldWelte@viatech.com>
* Linux 2.6.34-rc3Linus Torvalds2010-03-301-1/+1
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* KEYS: Add MAINTAINERS recordDavid Howells2010-03-301-0/+10
| | | | | | | Add a MAINTAINERS record for the key management facility. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-03-301-1/+5
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: CRED: Fix memory leak in error handling
| * CRED: Fix memory leak in error handlingMathieu Desnoyers2010-03-301-1/+5
| | | | | | | | | | | | | | | | Fix a memory leak on an OOM condition in prepare_usermodehelper_creds(). Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfsLinus Torvalds2010-03-307-36/+67
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs: [LogFS] Erase new journal segments [LogFS] Move reserved segments with journal [LogFS] Clear PagePrivate when moving journal Simplify and fix pad_wbuf Prevent data corruption in logfs_rewrite_block() Use deactivate_locked_super Fix logfs_get_sb_final error path Write out both superblocks on mismatch Prevent schedule while atomic in __logfs_readdir Plug memory leak in writeseg_end_io Limit max_pages for insane devices Open segment file before using it
| * | [LogFS] Erase new journal segmentsJoern Engel2010-03-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the device contains on old logfs image and the journal is moved to segment that have never been used by the current logfs and not all journal segments are erased before the next mount, the old content can confuse mount code. To prevent this, always erase the new journal segments. Signed-off-by: Joern Engel <joern@logfs.org>
| * | [LogFS] Move reserved segments with journalJoern Engel2010-03-291-0/+4
| | | | | | | | | | | | | | | | | | Fixes a GC livelock. Signed-off-by: Joern Engel <joern@logfs.org>
| * | [LogFS] Clear PagePrivate when moving journalJoern Engel2010-03-283-1/+3
| | | | | | | | | | | | | | | | | | | | | do_logfs_journal_wl_pass() must call freeseg(), thereby clear PagePrivate on all pages of the current journal segment. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Simplify and fix pad_wbufJoern Engel2010-03-281-22/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A comment in the old code read: /* The math in this function can surely use some love */ And indeed it did. In the case that area->a_used_bytes is exactly 4096 bytes below segment size it fell apart. pad_wbuf is now split into two helpers that are significantly less complicated. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Prevent data corruption in logfs_rewrite_block()Joern Engel2010-03-281-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | The comment was correct, so make the code match the comment. As the new comment indicates, we might be able to do a little less work. But for the current -rc series let's keep it simple and just fix the bug. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Use deactivate_locked_superJoern Engel2010-03-271-2/+1
| | | | | | | | | | | | | | | | | | Found by Al Viro. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Fix logfs_get_sb_final error pathJoern Engel2010-03-271-1/+1
| | | | | | | | | | | | | | | | | | | | | rootdir was already allocated, so we must iput it again. Found by Al Viro. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Write out both superblocks on mismatchJoern Engel2010-03-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | If the first superblock is wrong and the second gets written, there will still be a mismatch on next mount. Write both to make sure they match. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Prevent schedule while atomic in __logfs_readdirJoern Engel2010-03-271-2/+2
| | | | | | | | | | | | | | | | | | Apparently filldir can sleep, which forbids kmap_atomic. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Plug memory leak in writeseg_end_ioJoern Engel2010-03-271-0/+1
| | | | | | | | | | | | Signed-off-by: Joern Engel <joern@logfs.org>
| * | Limit max_pages for insane devicesJoern Engel2010-03-271-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | Intel SSDs have a limit of 0xffff as queue_max_hw_sectors(q). Such a limit may make sense from a hardware pov, but it causes bio_alloc() to return NULL. Signed-off-by: Joern Engel <joern@logfs.org>
| * | Open segment file before using itJoern Engel2010-03-271-4/+4
| | | | | | | | | | | | | | | | | | logfs_recover_sb() needs it open. Signed-off-by: Joern Engel <joern@logfs.org>
* | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2010-03-306-13/+44
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Do not free zero sized per cpu areas x86: Make sure free_init_pages() frees pages on page boundary x86: Make smp_locks end with page alignment
| * | x86: Do not free zero sized per cpu areasIan Campbell2010-03-291-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This avoids an infinite loop in free_early_partial(). Add a warning to free_early_partial() to catch future problems. -v5: put back start > end back into WARN_ONCE() -v6: use one line for warning, suggested by Linus -v7: more tests -v8: remove the function name as suggested by Johannes WARN_ONCE() will print out that function name. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Joel Becker <joel.becker@oracle.com> Tested-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-4-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Make sure free_init_pages() frees pages on page boundaryYinghai Lu2010-03-294-12/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_NO_BOOTMEM=y, it could use memory more effiently, or in a more compact fashion. Example: Allocated new RAMDISK: 00ec2000 - 0248ce57 Move RAMDISK from 000000002ea04000 - 000000002ffcee56 to 00ec2000 - 0248ce56 The new RAMDISK's end is not page aligned. Last page could be shared with other users. When free_init_pages are called for initrd or .init, the page could be freed and we could corrupt other data. code segment in free_init_pages(): | for (; addr < end; addr += PAGE_SIZE) { | ClearPageReserved(virt_to_page(addr)); | init_page_count(virt_to_page(addr)); | memset((void *)(addr & ~(PAGE_SIZE-1)), | POISON_FREE_INITMEM, PAGE_SIZE); | free_page(addr); | totalram_pages++; | } last half page could be used as one whole free page. So page align the boundaries. -v2: make the original initramdisk to be aligned, according to Johannes, otherwise we have the chance to lose one page. we still need to keep initrd_end not aligned, otherwise it could confuse decompressor. -v3: change to WARN_ON instead, suggested by Johannes. -v4: use PAGE_ALIGN, suggested by Johannes. We may fix that macro name later to PAGE_ALIGN_UP, and PAGE_ALIGN_DOWN Add comments about assuming ramdisk start is aligned in relocate_initrd(), change to re get ramdisk_image instead of save it to make diff smaller. Add warning for wrong range, suggested by Johannes. -v6: remove one WARN() We need to align beginning in free_init_pages() do not copy more than ramdisk_size, noticed by Johannes Reported-by: Stanislaw Gruszka <sgruszka@redhat.com> Tested-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-3-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Make smp_locks end with page alignmentYinghai Lu2010-03-291-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix: ------------[ cut here ]------------ WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa() free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.34-rc2-tip-03946-g4f16b23-dirty #50 Call Trace: [<40232e9f>] warn_slowpath_common+0x65/0x7c [<4021c9f0>] ? free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40232eea>] warn_slowpath_fmt+0x24/0x27 [<4021c9f0>] free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40d3f4bd>] alternative_instructions+0xf6/0x100 [<40d3fe4f>] check_bugs+0xbd/0xbf [<40d398a7>] start_kernel+0x2d5/0x2e4 [<40d390ce>] i386_start_kernel+0xce/0xd5 ---[ end trace 4eaa2a86a8e2da22 ]--- Comments in vmlinux.lds.S already said: | /* | * smp_locks might be freed after init | * start/end must be page aligned | */ Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-2-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2010-03-2911-74/+223
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: ocfs2: Fix a race in o2dlm lockres mastery Ocfs2: Handle deletion of reflinked oprhan inodes correctly. Ocfs2: Journaling i_flags and i_orphaned_slot when adding inode to orphan dir. ocfs2: Clear undo bits when local alloc is freed ocfs2: Init meta_ac properly in ocfs2_create_empty_xattr_block. ocfs2: Fix the update of name_offset when removing xattrs ocfs2: Always try for maximum bits with new local alloc windows ocfs2: set i_mode on disk during acl operations ocfs2: Update i_blocks in reflink operations. ocfs2: Change bg_chain check for ocfs2_validate_gd_parent. [PATCH] Skip check for mandatory locks when unlocking
| * | ocfs2: Fix a race in o2dlm lockres masterySrinivas Eeda2010-03-231-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In o2dlm, the master of a lock resource keeps a map of all interested nodes. This prevents the master from purging the resource before an interested node can create a lock. A race between the mastery thread and the mastery handler allowed an interested node to discover who the master is without informing the master directly. This is easily fixed by holding the dlm spinlock a little longer in the mastery handler. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
| * | Ocfs2: Handle deletion of reflinked oprhan inodes correctly.Tristan Ye2010-03-231-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rule is that all inodes in the orphan dir have ORPHANED_FL, otherwise we treated it as an ERROR. This rule works well except for some rare cases of reflink operation: http://oss.oracle.com/bugzilla/show_bug.cgi?id=1215 The problem is caused by how reflink and our orphan_scan thread interact. * The orphan scan pulls the orphans into a queue first, then runs the queue at a later time. We only hold the orphan_dir's lock during scanning. * Reflink create a oprhaned target in orphan_dir as its first step. It removes the target and clears the flag as the final step. These two steps take the orphan_dir's lock, but it is not held for the duration. Based on the above semantics, a reflink inode can be moved out of the orphan dir and have its ORPHANED_FL cleared before the queue of orphans is run. This leads to a ERROR in ocfs2_query_wipde_inode(). This patch teaches ocfs2_query_wipe_inode() to detect previously orphaned reflink targets. If a reflink fails or a crash occurs during the relfink operation, the inode will retain ORPHANED_FL and will be properly wiped. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
generated by cgit v1.1 at 2025-03-01 20:28:22 +0000