- 18 10月, 2010 3 次提交
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由 Jeff Layton 提交于
It already takes a file pointer. The inode associated with that had damn well better be the same one we're passing in anyway. Thus, there's no need for a separate argument here. Also, get rid of the bogus check for a null pCifsInode pointer. The CIFS_I macro uses container_of(), and that will virtually never return a NULL pointer anyway. Finally, move the setting of the canCache* flags outside of the lock. Other places in the code don't hold that lock when setting it, so I assume it's not really needed here either. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
Eliminate the poor, misunderstood "oflags" option from cifs_new_fileinfo. The callers mostly pass in the filp->f_flags here. That's not correct however since we're checking that value for the presence of FMODE_READ. Luckily that only affects how the f_list is ordered. What it really wants here is the file->f_mode. Just use that field from the filp to determine it. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
The way flags are passed and converted for cifs_posix_open is rather non-sensical. Some callers call cifs_posix_convert_flags on the flags before they pass them to cifs_posix_open, whereas some don't. Two flag conversion steps is just confusing though. Change the function instead to clearly expect input in f_flags format, and fix the callers to pass that in. Then, have cifs_posix_open call cifs_convert_posix_flags to do the conversion. Move cifs_posix_open to file.c as well so we can keep cifs_convert_posix_flags as a static function. Fix it also to not ignore O_CREAT, O_EXCL and O_TRUNC, and instead have cifs_reopen_file mask those bits off before calling cifs_posix_open. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 16 10月, 2010 1 次提交
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由 Jeff Layton 提交于
cifs: eliminate cifs_posix_open_inode_helper This function is redundant. The only thing it does is set the canCache flags, but those get set in cifs_new_fileinfo anyway. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 15 10月, 2010 2 次提交
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由 Suresh Jayaraman 提交于
FindFirst failure due to permission errors or any other errors are silently ignored by cifs_readdir(). This could cause problem to applications that depend on the error to do further processing. Reproducer: - mount a cifs share - mkdir tdir;touch tdir/1 tdir/2 tdir/3 - chmod -x tdir - ls tdir Currently, we start calling filldir() for '.' and '..' before we know we whether FindFirst could succeed or not. If FindFirst fails later, there is no way to notify VFS by setting buf.error and so VFS won't be able to catch this. Fix this by moving the call to initiate_cifs_search() before we start doing filldir(). This fixes https://bugzilla.samba.org/show_bug.cgi?id=7535Reported-by: NTom Dexter <digitalaudiorock@gmail.com> Signed-off-by: NSuresh Jayaraman <sjayaraman@suse.de> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Shirish Pargaonkar 提交于
Start calculation auth response within a session. Move/Add pertinet data structures like session key, server challenge and ntlmv2_hash in a session structure. We should do the calculations within a session before copying session key and response over to server data structures because a session setup can fail. Only after a very first smb session succeeds, it copies/makes its session key, session key of smb connection. This key stays with the smb connection throughout its life. Signed-off-by: NShirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 13 10月, 2010 2 次提交
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由 Jeff Layton 提交于
Filesystems aren't really supposed to do anything with a vfsmount. It's considered a layering violation since vfsmounts are entirely managed at the VFS layer. CIFS currently keeps an active reference to a vfsmount in order to prevent the superblock vanishing before an oplock break has completed. What we really want to do instead is to keep sb->s_active high until the oplock break has completed. This patch borrows the scheme that NFS uses for handling sillyrenames. An atomic_t is added to the cifs_sb_info. When it transitions from 0 to 1, an extra reference to the superblock is taken (by bumping the s_active value). When it transitions from 1 to 0, that reference is dropped and a the superblock teardown may proceed if there are no more references to it. Also, the vfsmount pointer is removed from cifsFileInfo and from cifs_new_fileinfo, and some bogus forward declarations are removed from cifsfs.h. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
cifsFileInfo is a bit problematic. It contains a reference back to the struct file itself. This makes it difficult for a cifsFileInfo to exist without a corresponding struct file. It would be better instead of the cifsFileInfo just held info pertaining to the open file on the server instead without any back refrences to the struct file. This would allow it to exist after the filp to which it was originally attached was closed. Much of the use of the file pointer in this struct is to get at the dentry. Begin divorcing the cifsFileInfo from the struct file by keeping a reference to the dentry. Since the dentry will have a reference to the inode, we can eliminate the "pInode" field too and convert the igrab/iput to dget/dput. Signed-off-by: NJeff Layton <jlayton@redhat.com> Reviewed-by: NSuresh Jayaraman <sjayaraman@suse.de> Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 12 10月, 2010 2 次提交
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由 Jeff Layton 提交于
commit 3aa1c8c2 made cifs_getattr set the ownership of files to current_fsuid/current_fsgid when multiuser mounts were in use and when mnt_uid/mnt_gid were non-zero. It should have instead based that decision on the CIFS_MOUNT_OVERR_UID/GID flags. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Shirish Pargaonkar 提交于
CIFS ntlm authentication and signing - Build a proper av/ti pair blob for ntlmv2 without extended security authentication Build an av pair blob as part of ntlmv2 (without extended security) auth request. Include netbios and dns names for domain and server and a timestamp in the blob. Signed-off-by: NShirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: NJeff Layton <jlayton@samba.org> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 09 10月, 2010 1 次提交
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由 Jeff Layton 提交于
Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 08 10月, 2010 21 次提交
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由 Steve French 提交于
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由 Steve French 提交于
Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
find_domain_name() uses load_nls_default which takes a module reference on the appropriate NLS module, but doesn't put it. Signed-off-by: NJeff Layton <jlayton@redhat.com> Cc: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
Create a workqueue job that cleans out unused tlinks. For now, it uses a hardcoded expire time of 10 minutes. When it's done, the work rearms itself. On umount, the work is cancelled before tearing down the tlink tree. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
...when unix extensions aren't enabled. This makes everything on the mount appear to be owned by the current user. This version of the patch differs from previous versions however in that the admin can still force the ownership of all files to appear as a single user via the uid=/gid= options. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6由 Linus Torvalds 提交于
* 'hwpoison-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: HWPOISON: Stop shrinking at right page count HWPOISON: Report correct address granuality for AO huge page errors HWPOISON: Copy si_addr_lsb to user page-types.c: fix name of unpoison interface
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git://git.kernel.dk/linux-2.6-block由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: elevator: fix oops on early call to elevator_change()
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git://neil.brown.name/md由 Linus Torvalds 提交于
* 'for-linus' of git://neil.brown.name/md: md: check return code of read_sb_page md/raid1: minor bio initialisation improvements. md/raid1: avoid overflow in raid1 resync when bitmap is in use.
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6由 Linus Torvalds 提交于
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: don't drop handle reference on unload drm/ttm: Fix two race conditions + fix busy codepaths
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: wacom - fix runtime PM related deadlock Input: joydev - fix JSIOCSAXMAP ioctl Input: uinput - setup MT usage during device creation
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git://oss.sgi.com/xfs/xfs由 Linus Torvalds 提交于
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: properly account for reclaimed inodes
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6由 Linus Torvalds 提交于
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (37 commits) V4L/DVB: v4l: radio: si470x: fix unneeded free_irq() call V4L/DVB: v4l: videobuf: prevent passing a NULL to dma_free_coherent() V4L/DVB: ir-core: Fix null dereferences in the protocols sysfs interface V4L/DVB: v4l: s5p-fimc: Fix 3-planar formats handling and pixel offset error on S5PV210 SoCs V4L/DVB: v4l: s5p-fimc: Fix return value on probe() failure V4L/DVB: uvcvideo: Restrict frame rates for Chicony CNF7129 webcam V4L/DVB: uvcvideo: Fix support for Medion Akoya All-in-one PC integrated webcam V4L/DVB: ivtvfb: prevent reading uninitialized stack memory V4L/DVB: cx25840: Fix typo in volume control initialization: 65335 vs. 65535 V4L/DVB: v4l: mem2mem_testdev: add missing release for video_device V4L/DVB: v4l: mem2mem_testdev: fix errorenous comparison V4L/DVB: mt9v022.c: Fixed compilation warning V4L/DVB: mt9m111: added current colorspace at g_fmt V4L/DVB: mt9m111: cropcap and s_crop check if type is VIDEO_CAPTURE V4L/DVB: mx2_camera: fix a race causing NULL dereference V4L/DVB: tm6000: bugfix data handling V4L/DVB: gspca - sn9c20x: Bad transfer size of Bayer images V4L/DVB: videobuf-dma-sg: set correct size in last sg element V4L/DVB: cx231xx: Avoid an OOPS when card is unknown (card=0) V4L/DVB: dvb: fix smscore_getbuffer() logic ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging由 Linus Torvalds 提交于
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: of/i2c: Fix module load order issue caused by of_i2c.c i2c: Fix checks which cause legacy suspend to never get called i2c-pca: Fix waitforcompletion() return value i2c: Fix for suspend/resume issue i2c: Remove obsolete cleanup for clientdata
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由 Eric Dumazet 提交于
When proc_doulongvec_minmax() is used with an array of longs, and no min/max check requested (.extra1 or .extra2 being NULL), we dereference a NULL pointer for the second element of the array. Noticed while doing some changes in network stack for the "16TB problem" Fix is to not change min & max pointers in __do_proc_doulongvec_minmax(), so that all elements of the vector share an unique min/max limit, like proc_dointvec_minmax(). [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Americo Wang <xiyou.wangcong@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kyungmin Park 提交于
Add Samsung S5P series FIMC(Camera Interface) maintainers. Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrew Morton 提交于
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kirill A. Shutemov 提交于
We need to check parent's thresholds if parent has use_hierarchy == 1 to be sure that parent's threshold events will be triggered even if parent itself is not active (no MEM_CGROUP_EVENTS). Signed-off-by: NKirill A. Shutemov <kirill@shutemov.name> Reviewed-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: NBalbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Robin Holt 提交于
During boot of a 16TB system, the following is printed: Dentry cache hash table entries: -2147483648 (order: 22, 17179869184 bytes) Signed-off-by: NRobin Holt <holt@sgi.com> Reviewed-by: NWANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Steve French 提交于
Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
This allows someone to declare a mount as a multiuser mount. Multiuser mounts also imply "noperm" since we want to allow the server to handle permission checking. It also (for now) requires Kerberos authentication. Eventually, we could expand this to other authtypes, but that requires a scheme to allow per-user credential stashing in some form. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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由 Jeff Layton 提交于
This patch is rather large, but it's a bit difficult to do piecemeal... For non-multiuser mounts, everything will basically work as it does today. A call to cifs_sb_tlink will return the "master" tcon link. Turn the tcon pointer in the cifs_sb into a radix tree that uses the fsuid of the process as a key. The value is a new "tcon_link" struct that contains info about a tcon that's under construction. When a new process needs a tcon, it'll call cifs_sb_tcon. That will then look up the tcon_link in the radix tree. If it exists and is valid, it's returned. If it doesn't exist, then we stuff a new tcon_link into the tree and mark it as pending and then go and try to build the session/tcon. If that works, the tcon pointer in the tcon_link is updated and the pending flag is cleared. If the construction fails, then we set the tcon pointer to an ERR_PTR and clear the pending flag. If the radix tree is searched and the tcon_link is marked pending then we go to sleep and wait for the pending flag to be cleared. Signed-off-by: NJeff Layton <jlayton@redhat.com> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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- 07 10月, 2010 8 次提交
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由 Andi Kleen 提交于
When we call the slab shrinker to free a page we need to stop at page count one because the caller always holds a single reference, not zero. This avoids useless looping over slab shrinkers and freeing too much memory. Reviewed-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NAndi Kleen <ak@linux.intel.com>
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由 Andi Kleen 提交于
The SIGBUS user space signalling is supposed to report the address granuality of a corruption. Pass this information correctly for huge pages by querying the hpage order. Reviewed-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NAndi Kleen <ak@linux.intel.com>
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由 Andi Kleen 提交于
The original hwpoison code added a new siginfo field si_addr_lsb to pass the granuality of the fault address to user space. Unfortunately this field was never copied to user space. Fix this here. I added explicit checks for the MCEERR codes to avoid having to patch all potential callers to initialize the field. Signed-off-by: NAndi Kleen <ak@linux.intel.com>
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由 Naoya Horiguchi 提交于
The page-types utility still uses an out of date name for the unpoison interface: debugfs:hwpoison/renew-pfn This patch renames and fixes it. Signed-off-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NAndi Kleen <ak@linux.intel.com>
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由 Jens Axboe 提交于
2.6.36 introduces an API for drivers to switch the IO scheduler instead of manually calling the elevator exit and init functions. This API was added since q->elevator must be cleared in between those two calls. And since we already have this functionality directly from use by the sysfs interface to switch schedulers online, it was prudent to reuse it internally too. But this API needs the queue to be in a fully initialized state before it is called, or it will attempt to unregister elevator kobjects before they have been added. This results in an oops like this: BUG: unable to handle kernel NULL pointer dereference at 0000000000000051 IP: [<ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0 PGD 47ddfc067 PUD 47c6a1067 PMD 0 Oops: 0000 [#1] PREEMPT SMP last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.1/irq CPU 2 Modules linked in: t(+) loop hid_apple usbhid ahci ehci_hcd uhci_hcd libahci usbcore nls_base igb Pid: 7319, comm: modprobe Not tainted 2.6.36-rc6+ #132 QSSC-S4R/QSSC-S4R RIP: 0010:[<ffffffff8116f15e>] [<ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0 RSP: 0018:ffff88027da25d08 EFLAGS: 00010246 RAX: ffff88047c68c528 RBX: 00000000fffffffe RCX: 0000000000000000 RDX: 000000000000002f RSI: 000000000000002f RDI: ffff88047e196c88 RBP: ffff88027da25d38 R08: 0000000000000000 R09: d84156c5635688c0 R10: d84156c5635688c0 R11: 0000000000000000 R12: ffff88047e196c88 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88047c68c528 FS: 00007fcb0b26f6e0(0000) GS:ffff880287400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000051 CR3: 000000047e76e000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 7319, threadinfo ffff88027da24000, task ffff88027d377090) Stack: ffff88027da25d58 ffff88047c68c528 00000000fffffffe ffff88047e196c88 <0> ffff88047c68c528 ffff88047e05bd90 ffff88027da25d78 ffffffff8123fb77 <0> ffff88047e05bd90 0000000000000000 ffff88047e196c88 ffff88047c68c528 Call Trace: [<ffffffff8123fb77>] kobject_add_internal+0xe7/0x1f0 [<ffffffff8123fd98>] kobject_add_varg+0x38/0x60 [<ffffffff8123feb9>] kobject_add+0x69/0x90 [<ffffffff8116efe0>] ? sysfs_remove_dir+0x20/0xa0 [<ffffffff8103d48d>] ? sub_preempt_count+0x9d/0xe0 [<ffffffff8143de20>] ? _raw_spin_unlock+0x30/0x50 [<ffffffff8116efe0>] ? sysfs_remove_dir+0x20/0xa0 [<ffffffff8116eff4>] ? sysfs_remove_dir+0x34/0xa0 [<ffffffff81224204>] elv_register_queue+0x34/0xa0 [<ffffffff81224aad>] elevator_change+0xfd/0x250 [<ffffffffa007e000>] ? t_init+0x0/0x361 [t] [<ffffffffa007e000>] ? t_init+0x0/0x361 [t] [<ffffffffa007e0a8>] t_init+0xa8/0x361 [t] [<ffffffff810001de>] do_one_initcall+0x3e/0x170 [<ffffffff8108c3fd>] sys_init_module+0xbd/0x220 [<ffffffff81002f2b>] system_call_fastpath+0x16/0x1b Code: e5 41 56 41 55 41 54 49 89 fc 53 48 83 ec 10 48 85 ff 74 52 48 8b 47 18 49 c7 c5 00 46 61 81 48 85 c0 74 04 4c 8b 68 30 45 31 f6 <41> 80 7d 51 00 74 0e 49 8b 44 24 28 4c 89 e7 ff 50 20 49 89 c6 RIP [<ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0 RSP <ffff88027da25d08> CR2: 0000000000000051 ---[ end trace a6541d3bf07945df ]--- Fix this by adding a registered bit to the elevator queue, which is set when the sysfs kobjects have been registered. Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
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由 Dave Airlie 提交于
since the handle references are all tied to a file_priv, and when it disappears all the handle refs go with it. The fbcon ones we'd only notice on unload, but the nouveau notifier one would would happen on reboot. nouveau: Reported-by: Marc Dionne <marc.c.dionne@gmail.com> nouveau: Tested-by: Marc Dionne <marc.c.dionne@gmail.com> i915 unload: Reported-by: Keith Packard <keithp@keithp.com> Acked-by: NBen Skeggs <bskeggs@redhat.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Johannes Weiner 提交于
When marking an inode reclaimable, a per-AG counter is increased, the inode is tagged reclaimable in its per-AG tree, and, when this is the first reclaimable inode in the AG, the AG entry in the per-mount tree is also tagged. When an inode is finally reclaimed, however, it is only deleted from the per-AG tree. Neither the counter is decreased, nor is the parent tree's AG entry untagged properly. Since the tags in the per-mount tree are not cleared, the inode shrinker iterates over all AGs that have had reclaimable inodes at one point in time. The counters on the other hand signal an increasing amount of slab objects to reclaim. Since "70e60ce7 xfs: convert inode shrinker to per-filesystem context" this is not a real issue anymore because the shrinker bails out after one iteration. But the problem was observable on a machine running v2.6.34, where the reclaimable work increased and each process going into direct reclaim eventually got stuck on the xfs inode shrinking path, trying to scan several million objects. Fix this by properly unwinding the reclaimable-state tracking of an inode when it is reclaimed. Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: stable@kernel.org Reviewed-by: NDave Chinner <dchinner@redhat.com> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 Vasiliy Kulikov 提交于
Function read_sb_page may return ERR_PTR(...). Check for it. Signed-off-by: NVasiliy Kulikov <segooon@gmail.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NNeilBrown <neilb@suse.de>
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