summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2011-08-20OMAP: powerdomains: Make all powerdomain target states as ON at initRajendra Nayak1-9/+16
Program all powerdomain target state as ON; this is to prevent domains from hitting low power states (if bootloader has target states set to something other than ON) and potentially even losing context while PM is not fully initialized, which can cause the system to crash. The PM late init code can then program the desired target state for all the power domains. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [paul@pwsan.com: dropped comment typo hunk; fixed comment indent and moved to kerneldoc; moved code to pwrdm_init(); changed pwrdm_init() argument name to prevent clash; cleaned up patch description] Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-08-19Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds26-135/+800
* 'for-linus' of git://git.kernel.dk/linux-block: (23 commits) Revert "cfq: Remove special treatment for metadata rqs." block: fix flush machinery for stacking drivers with differring flush flags block: improve rq_affinity placement blktrace: add FLUSH/FUA support Move some REQ flags to the common bio/request area allow blk_flush_policy to return REQ_FSEQ_DATA independent of *FLUSH xen/blkback: Make description more obvious. cfq-iosched: Add documentation about idling block: Make rq_affinity = 1 work as expected block: swim3: fix unterminated of_device_id table block/genhd.c: remove useless cast in diskstats_show() drivers/cdrom/cdrom.c: relax check on dvd manufacturer value drivers/block/drbd/drbd_nl.c: use bitmap_parse instead of __bitmap_parse bsg-lib: add module.h include cfq-iosched: Reduce linked group count upon group destruction blk-throttle: correctly determine sync bio loop: fix deadlock when sysfs and LOOP_CLR_FD race against each other loop: add BLK_DEV_LOOP_MIN_COUNT=%i to allow distros 0 pre-allocated loop devices loop: add management interface for on-demand device allocation loop: replace linked list of allocated devices with an idr index ...
2011-08-19Merge branch 'for-linus' of ↵Linus Torvalds9-153/+454
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: OF: Don't crash when bridge parent is NULL. PCI: export pcie_bus_configure_settings symbol PCI: code and comments cleanup PCI: make cardbus-bridge resources optional PCI: make SRIOV resources optional PCI : ability to relocate assigned pci-resources PCI: honor child buses add_size in hot plug configuration PCI: Set PCI-E Max Payload Size on fabric
2011-08-19PCI: OF: Don't crash when bridge parent is NULL.David Daney1-1/+1
In pcibios_get_phb_of_node(), we will crash while booting if bus->bridge->parent is NULL. Check for this case and avoid dereferencing the NULL pointer. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-08-19Revert "cfq: Remove special treatment for metadata rqs."Jens Axboe1-0/+18
We have a kernel build regression since 3.1-rc1, which is about 10% regression. The kernel source is in an ext3 filesystem. Alex Shi bisect it to commit: commit a07405b7802691d29ab3b23bdc76ee6d006aad0b Author: Justin TerAvest <teravest@google.com> Date: Sun Jul 10 22:09:19 2011 +0200 cfq: Remove special treatment for metadata rqs. Apparently this is caused by lack metadata preemption, where ext3/ext4 do use READ_META. I didn't see a way to fix the issue, so suggest reverting the patch. This reverts commit a07405b7802691d29ab3b23bdc76ee6d006aad0b. Reported-by: Alex Shi<alex.shi@intel.com> Reported-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds1-2/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: fix array bounds error setting up PCIC NMI trap
2011-08-19Merge branch 'upstream-linus' of ↵Linus Torvalds6-9/+288
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: drivers/ata/sata_dwc_460ex.c: add missing kfree ata: Add iMX pata support pata_via: disable ATAPI DMA on AVERATEC 3200 [libata] sata_sil: fix used-uninit warning
2011-08-19Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds6-40/+43
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4.1: Return NFS4ERR_BADSESSION to callbacks during session resets NFSv4.1: Fix the callback 'highest_used_slotid' behaviour pnfs-obj: Fix the comp_index != 0 case pnfs-obj: Bug when we are running out of bio nfs: add missing prefetch.h include
2011-08-19sparc: fix array bounds error setting up PCIC NMI trapIan Campbell1-2/+2
CC arch/sparc/kernel/pcic.o arch/sparc/kernel/pcic.c: In function 'pcic_probe': arch/sparc/kernel/pcic.c:359:33: error: array subscript is above array bounds [-Werror=array-bounds] arch/sparc/kernel/pcic.c:359:8: error: array subscript is above array bounds [-Werror=array-bounds] arch/sparc/kernel/pcic.c:360:33: error: array subscript is above array bounds [-Werror=array-bounds] arch/sparc/kernel/pcic.c:360:8: error: array subscript is above array bounds [-Werror=array-bounds] arch/sparc/kernel/pcic.c:361:33: error: array subscript is above array bounds [-Werror=array-bounds] arch/sparc/kernel/pcic.c:361:8: error: array subscript is above array bounds [-Werror=array-bounds] cc1: all warnings being treated as errors I'm not particularly familiar with sparc but t_nmi (defined in head_32.S via the TRAP_ENTRY macro) and pcic_nmi_trap_patch (defined in entry.S) both appear to be 4 instructions long and I presume from the usage that instructions are int sized. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-19drivers/ata/sata_dwc_460ex.c: add missing kfreeJulia Lawall1-8/+6
Currently, error handling code in this function calls the function sata_dwc_port_stop, but this function has essentially no effect if hsdevp has not been stored in ap, which is the case throughout this function. The only effect is to print a debugging message including ap->print_id. The code is rewritten to not call sata_dwc_port_stop, but instead to jump to a local label that prints the original error message and the print_id information. In the case where hsdevp has been already allocated (but not yet stored in ap), this value is freed as well. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ local idexpression x; statement S,S1; expression E; identifier fl; expression *ptr != NULL; @@ x = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...kfree(x)...+> } when any when != true x == NULL x->fl ...> ( if (x == NULL) S1 | if (...) { ... when != x when forall ( return \(0\|<+...x...+>\|ptr\); | * return ...; ) } ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-08-19ata: Add iMX pata supportArnaud Patard (Rtp)3-0/+263
Add basic support for pata on iMX. It has been tested only on imx51. SDMA support will probably be added later so this version supports only PIO. v2: - enable only when needed IORDY - use dev_get_drvdata v3: - add missing clk_put() calls - use platform_get_irq() - fix resume code to avoid disabling IORDY on resume v4: - Remove EXPERIMENTAL and switch to depends on ARCH_MXC - Use devm_kzalloc() - make clock a must-have - Use only 1 ioremap Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-08-19pata_via: disable ATAPI DMA on AVERATEC 3200Tejun Heo1-0/+18
On AVERATEC 3200, pata_via causes memory corruption with ATAPI DMA, which often leads to random kernel oops. The cause of the problem is not well understood yet and only small subset of machines using the controller seem affected. Blacklist ATAPI DMA on the machine. Signed-off-by: Tejun Heo <tj@kernel.org> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=11426 Reported-and-tested-by: Jim Bray <jimsantelmo@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-08-19[libata] sata_sil: fix used-uninit warningJeff Garzik1-1/+1
Init 'serror' to silence the following warning: drivers/ata/sata_sil.c: In function ‘sil_interrupt’: drivers/ata/sata_sil.c:453:14: warning: ‘serror’ may be used uninitialized in this function [-Wuninitialized] This is not a 'can never happen' but is nonetheless extremely unlikely. The easiest and cleanest warning fix is simply to init the var, rather than worry about marking the var uninit-ok. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-08-19Merge branch 'for-linus' of ↵Linus Torvalds9-43/+183
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: set i_size properly when fallocating and we already btrfs: unlock on error in btrfs_file_llseek() btrfs: btrfs_permission's RO check shouldn't apply to device nodes Btrfs: truncate pages from clone ioctl target range Btrfs: fix uninitialized sync_pending Btrfs: fix wrong free space information btrfs: memory leak in btrfs_add_inode_defrag() Btrfs: use plain page_address() in header fields setget functions Btrfs: forced readonly when btrfs_drop_snapshot() fails Btrfs: check if there is enough space for balancing smarter Btrfs: fix a bug of balance on full multi-disk partitions Btrfs: fix an oops of log replay Btrfs: detect wether a device supports discard Btrfs: force unplugs when switching from high to regular priority bios
2011-08-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds3-4/+5
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: update cifs version to 1.75 [CIFS] possible memory corruption on mount cifs: demote cERROR in build_path_from_dentry to cFYI
2011-08-19Merge branch 'for-linus' of ↵Linus Torvalds4-8/+14
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/iser: Support iSCSI PDU padding IBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long) IPoIB: Fix possible NULL dereference in ipoib_start_xmit()
2011-08-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6Linus Torvalds2-5/+4
* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6: fat: fat16 support maximum 4GB file/vol size as WinXP or 7. fat: fix utf8 iocharset warning message fat: fix build warning
2011-08-19irqdesc: fix new kernel-doc warningRandy Dunlap1-0/+1
Fix kernel-doc warning in irqdesc.c: Warning(kernel/irq/irqdesc.c:353): No description found for parameter 'owner' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-19i7core_edac: fixed typo in error count calculationMathias Krause1-1/+1
Based on a patch from the PaX Team, found during a clang analysis pass. Signed-off-by: Mathias Krause <minipli@googlemail.com> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: PaX Team <pageexec@freemail.hu> Cc: stable@kernel.org [v2.6.35+] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-18update cifs version to 1.75Steve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-08-18[CIFS] possible memory corruption on mountSteve French1-1/+2
CIFS cleanup_volume_info_contents() looks like having a memory corruption problem. When UNCip is set to "&vol->UNC[2]" in cifs_parse_mount_options(), it should not be kfree()-ed in cleanup_volume_info_contents(). Introduced in commit b946845a9dc523c759cae2b6a0f6827486c3221a Signed-off-by: J.R. Okajima <hooanon05@yahoo.co.jp> Reviewed-by: Jeff Layton <jlayton@redhat.com> CC: Stable <stable@kernel.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-08-18Merge branch 'btrfs-3.0' into for-linusChris Mason8-35/+167
2011-08-18Btrfs: set i_size properly when fallocating and we alreadyJosef Bacik1-0/+14
xfstests exposed a problem with preallocate when it fallocates a range that already has an extent. We don't set the new i_size properly because we see that we already have an extent. This isn't right and we should update i_size if the space already exists. With this patch we now pass xfstests 075. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-18btrfs: unlock on error in btrfs_file_llseek()Dan Carpenter1-4/+8
There were some unlocks on error missing in a recent patch to btrfs_file_llseek(). Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-18btrfs: btrfs_permission's RO check shouldn't apply to device nodesJeff Mahoney1-4/+8
This patch tightens the read-only access checks in btrfs_permission to match the constraints in inode_permission. Currently, even though the device node itself will be unmodified, read-write access to device nodes is denied to when the device node resides on a read-only subvolume or a is a file that has been marked read-only by the btrfs conversion utility. With this patch applied, the check only affects regular files, directories, and symlinks. It also restructures the code a bit so that we don't duplicate the MAY_WRITE check for both tests. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-18befs: Validate length of long symbolic links.Timo Warns1-9/+14
Signed-off-by: Timo Warns <warns@pre-sense.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-18Merge branch 'pm-fixes' of ↵Linus Torvalds3-18/+26
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / Domains: Fix build for CONFIG_PM_RUNTIME unset
2011-08-18mm: fix __page_to_pfn for a const struct page argumentIan Campbell2-4/+4
This allows the cast in lowmem_page_address (introduced as a warning fixup to 33dd4e0ec911 "mm: make some struct page's const") to be removed. Propagate const'ness to page_to_section() as well since it is required by __page_to_pfn. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Michel Lespinasse <walken@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-18mm: make HASHED_PAGE_VIRTUAL page_address' struct page argument const.Ian Campbell3-4/+4
Followup to 33dd4e0ec911 "mm: make some struct page's const" which missed the HASHED_PAGE_VIRTUAL case. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Michel Lespinasse <walken@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-17Merge branches 'ipoib' and 'iser' into for-nextRoland Dreier3-5/+9
2011-08-17Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds9-137/+403
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf probe: Filter out redundant inline-instances perf probe: Search concrete out-of-line instances perf probe: Avoid searching variables in intermediate scopes perf probe: Fix to search local variables in appropriate scope perf probe: Warn when more than one line are given perf probe: Fix to walk all inline instances perf probe: Fix to search nested inlined functions in CU perf probe: Fix line walker to check CU correctly perf probe: Fix a memory leak for scopes array perf: fix temporary file ownership check perf report: Use properly build_id kernel binaries perf top browser: Remove spurious helpline update
2011-08-17Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds2-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rtc: Limit RTC PIE frequency rtc: Fix hrtimer deadlock rtc: Handle errors correctly in rtc_irq_set_state() Fixup trivial conflicts in drivers/rtc/interface.c due to slightly trivially versions of the same patch coming in two different ways.
2011-08-17Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds1-1/+7
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: Fix wrong assumption in match_held_lock
2011-08-17Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds5-19/+51
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: irq: Track the owner of irq descriptor irq: Always set IRQF_ONESHOT if no primary handler is specified genirq: Fix wrong bit operation
2011-08-17IB/iser: Support iSCSI PDU paddingOr Gerlitz2-4/+8
RFC3270 mandates that iSCSI PDUs are padded to the closest integer number of four byte words. Fix the iser code to support that on both the TX/RX flows. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-08-17IBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long)Or Gerlitz1-1/+1
The code that prepares the SG associated with SCSI command for FMR was buggy for systems with DMA addresses that don't fit in unsigned long, e.g under the 32-bit based XenServer dom0 sizeof(dma_addr_t) is 8. Fix that by casting to unsigned long long a masking constant used by the code. This resolves a crash in iser_sg_to_page_vec on this system. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-08-17fat: fat16 support maximum 4GB file/vol size as WinXP or 7.Namjae Jeon1-2/+1
FAT16 support maximum 4GB vol/file size with 64KB cluster size. Win NT/XP/7 increased the maximum cluster size to 64KB, and file/vol size increased 4GB also. Although increasing, the file size of linux FAT is still limited at 2GB. I found that it is limited by sb->maxbytes(0x7fffffff) when partition is formatted by FAT16. sb->s_maxbytes in fill_super should be set to 0xffffffff like fat32. Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2011-08-17fat: fix utf8 iocharset warning messageMihai Moldovan1-2/+2
The fat_msg function already formats the given message and appends a newline to it - we don't need to do this in the passed message string as well, or will end up with a blank line printed in the kernel log ring buffer. Also change the loglevel from error to warning. Signed-off-by: Mihai Moldovan <ionic@ionic.de> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2011-08-17fat: fix build warningJonas Aberg1-1/+1
This fixes a compile warning (unititialized variable) in the fat filesystem code. Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2011-08-17Btrfs: truncate pages from clone ioctl target rangeSage Weil1-0/+4
We need to truncate page cache pages for the clone ioctl target range or else we'll confuse ourselves to no end. If the old data was cached, we used to still see it (until remount). If the page was partially updated we used to get a mix of old and new data. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: fix uninitialized sync_pendingMiao Xie1-1/+1
sync_pending is uninitialized before it be used, fix it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: fix wrong free space informationMiao Xie1-5/+11
Btrfs subtracted the size of the allocated space twice when it allocated the space from the bitmap in the cluster, it broke the free space information and led to oops finally. And this patch also fixes the bug that ctl->free_space was subtracted without lock. Reported-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17btrfs: memory leak in btrfs_add_inode_defrag()Dan Carpenter1-0/+2
We don't use the defrag struct on this path. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: use plain page_address() in header fields setget functionsLi Zefan1-4/+2
We've stopped using highmem for extent buffers. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: forced readonly when btrfs_drop_snapshot() failsTsutomu Itoh2-10/+16
The filesystem turns readonly instead of returning the error to the caller when detected error in btrfs_drop_snapshot(). and, because the caller doesn't check the error, the function type is changed to 'void'. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: check if there is enough space for balancing smarterliubo1-6/+35
When checking if there is enough space for balancing a block group, since we do not take raid types into consideration, we do not account corrent amounts of space that we needed. This makes us do some extra work before we get ENOSPC. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: fix a bug of balance on full multi-disk partitionsliubo1-4/+13
When balancing, we'll first try to shrink devices for some space, but if it is working on a full multi-disk partition with raid protection, we may encounter a bug, that is, while shrinking, total_bytes may be less than bytes_used, and btrfs may allocate a dev extent that accesses out of device's bounds. Then we will not be able to write or read the data which stores at the end of the device, and get the followings: device fsid 0939f071-7ea3-46c8-95df-f176d773bfb6 devid 1 transid 10 /dev/sdb5 Btrfs detected SSD devices, enabling SSD mode btrfs: relocating block group 476315648 flags 9 btrfs: found 4 extents attempt to access beyond end of device sdb5: rw=145, want=546176, limit=546147 attempt to access beyond end of device sdb5: rw=145, want=546304, limit=546147 attempt to access beyond end of device sdb5: rw=145, want=546432, limit=546147 attempt to access beyond end of device sdb5: rw=145, want=546560, limit=546147 attempt to access beyond end of device Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: fix an oops of log replayliubo1-4/+24
When btrfs recovers from a crash, it may hit the oops below: ------------[ cut here ]------------ kernel BUG at fs/btrfs/inode.c:4580! [...] RIP: 0010:[<ffffffffa03df251>] [<ffffffffa03df251>] btrfs_add_link+0x161/0x1c0 [btrfs] [...] Call Trace: [<ffffffffa03e7b31>] ? btrfs_inode_ref_index+0x31/0x80 [btrfs] [<ffffffffa04054e9>] add_inode_ref+0x319/0x3f0 [btrfs] [<ffffffffa0407087>] replay_one_buffer+0x2c7/0x390 [btrfs] [<ffffffffa040444a>] walk_down_log_tree+0x32a/0x480 [btrfs] [<ffffffffa0404695>] walk_log_tree+0xf5/0x240 [btrfs] [<ffffffffa0406cc0>] btrfs_recover_log_trees+0x250/0x350 [btrfs] [<ffffffffa0406dc0>] ? btrfs_recover_log_trees+0x350/0x350 [btrfs] [<ffffffffa03d18b2>] open_ctree+0x1442/0x17d0 [btrfs] [...] This comes from that while replaying an inode ref item, we forget to check those old conflicting DIR_ITEM and DIR_INDEX items in fs/file tree, then we will come to conflict corners which lead to BUG_ON(). Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Tested-by: Andy Lutomirski <luto@mit.edu> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-17Btrfs: detect wether a device supports discardJosef Bacik3-2/+29
We have a problem where if a user specifies discard but doesn't actually support it we will return EOPNOTSUPP from btrfs_discard_extent. This is a problem because this gets called (in a fashion) from the tree log recovery code, which has a nice little BUG_ON(ret) after it, which causes us to fail the tree log replay. So instead detect wether our devices support discard when we're adding them and then don't issue discards if we know that the device doesn't support it. And just for good measure set ret = 0 in btrfs_issue_discard just in case we still get EOPNOTSUPP so we don't screw anybody up like this again. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-08-16Merge branch 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-0/+3
* 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: uses TASKSTATS, depends on NET KVM: fix TASK_DELAY_ACCT kconfig warning