29 Sep, 2011
1 commit
-
These helper functions iterate back references and call a function for each
backref. There is also a function to resolve an inode to a path in the
file system.Signed-off-by: Jan Schmidt
21 Sep, 2011
2 commits
-
Fix a crash/BUG_ON in the clone ioctl due to insufficient reservation. We
need to reserve space for:- adjusting the old extent (possibly splitting it)
- adding the new extent
- updating the inodeSigned-off-by: Sage Weil
Signed-off-by: Chris Mason
18 Sep, 2011
7 commits
-
We can race with readdir and the RCU path walking stuff. This is because we
clear the need lookup flag before actually instantiating the inode. This will
lead the RCU path walk stuff to find a dentry it thinks is valid without a
d_inode attached. So instead unhash the dentry when we first start the lookup,
and then clear the flag after we've instantiated the dentry so we're garunteed
to either try the slow lookup, or have the d_inode set properly.Signed-off-by: Josef Bacik
Signed-off-by: Chris Mason -
The recent reworking of btrfs' lseek lead to incorrect
values being returned. This adds checks for seeking
beyond EOF in SEEK_HOLE and makes sure the error
values come back correct.Andi Kleen also sent in similar patches.
Signed-off-by: Jie Liu
Reported-by: Andi Kleen
Signed-off-by: Chris Mason -
The dst file will have the same inode flags with dst file after
file clone, and I think it's unexpected.For example, the dst file will suddenly become immutable after
getting some share of data with src file, if the src is immutable.Signed-off-by: Li Zefan
Signed-off-by: Chris Mason -
To reproduce the bug:
# mount /dev/sda7 /mnt
# dd if=/dev/zero of=/mnt/src bs=4K count=1
# umount /mnt# mount -o nodatasum /dev/sda7 /mnt
# dd if=/dev/zero of=/mnt/dst bs=4K count=1
# clone_range -s 4K -l 4K /mnt/src /mnt/dst# echo 3 > /proc/sys/vm/drop_caches
# cat /mnt/dst
# dmesg
...
btrfs no csum found for inode 258 start 0
btrfs csum failed ino 258 off 0 csum 2566472073 private 0It's because part of the file is checksummed and the other part is not,
and then btrfs will complain checksum is not found when we read the file.Disallow file clone if src and dst file have different checksum flag,
so we ensure a file is completely checksummed or unchecksummed.Signed-off-by: Li Zefan
Signed-off-by: Chris Mason -
It's a bug in commit f81c9cdc567cd3160ff9e64868d9a1a7ee226480
(Btrfs: truncate pages from clone ioctl target range)We should pass the dest range to the truncate function, but not the
src range.Also move the function before locking extent state.
Signed-off-by: Li Zefan
Signed-off-by: Chris Mason -
Since the d_off in the first dirent for "." (that originates from
the 4th argument "offset" of filldir() for the 2nd dirent for "..")
is wrongly assigned in btrfs_real_readdir(), telldir returns same
offset for different locations.| # mkfs.btrfs /dev/sdb1
| # mount /dev/sdb1 fs0
| # cd fs0
| # touch file0 file1
| # ../test
| telldir: 0
| readdir: d_off = 2, d_name = "."
| telldir: 2
| readdir: d_off = 2, d_name = ".."
| telldir: 2
| readdir: d_off = 3, d_name = "file0"
| telldir: 3
| readdir: d_off = 2147483647, d_name = "file1"
| telldir: 2147483647To fix this problem, pass filp->f_pos (which is loff_t) instead.
| # ../test
| telldir: 0
| readdir: d_off = 1, d_name = "."
| telldir: 1
| readdir: d_off = 2, d_name = ".."
| telldir: 2
| readdir: d_off = 3, d_name = "file0"
:At the moment the "offset" for "." is unused because there is no
preceding dirent, however it is better to pass filp->f_pos to follow
grammatical usage.Signed-off-by: Hidetoshi Seto
Signed-off-by: Chris Mason
13 Sep, 2011
8 commits
-
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: Remove duplicate "return" statement
drm/nv04/crtc: Bail out if FB is not bound to crtc
drm/nouveau: fix nv04_sgdma_bind on non-"4kB pages" archs
drm/nouveau: properly handle allocation failure in nouveau_sgdma_populate
drm/nouveau: fix oops on pre-semaphore hardware
drm/nv50/crtc: Bail out if FB is not bound to crtc
drm/radeon/kms: fix DP detect and EDID fetch for DP bridges -
* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
ARM: CSR: add missing sentinels to of_device_id tables
ARM: cns3xxx: Fix newly introduced warnings in the PCIe code
ARM: cns3xxx: Fix compile error caused by hardware.h removed
ARM: davinci: fix cache flush build error
ARM: davinci: correct MDSTAT_STATE_MASK
ARM: davinci: da850 EVM: read mac address from SPI flash
OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlers
OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[]
OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomain
OMAP4: clock: fix compile warning
OMAP4: clock: re-enable previous clockdomain enable/disable sequence
OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain force wakeup
OMAP: powerdomains: Make all powerdomain target states as ON at init -
The LTTng 2.0 kernel tracer (stand-alone module package, available at
http://lttng.org) uses the 0xF6 ioctl range for tracer control and
transport operations.Signed-off-by: Mathieu Desnoyers
Signed-off-by: Linus Torvalds -
* 'for-linus' of git://github.com/chrismason/linux:
Btrfs: add dummy extent if dst offset excceeds file end in
Btrfs: calc file extent num_bytes correctly in file clone
btrfs: xattr: fix attribute removal
Btrfs: fix wrong nbytes information of the inode
Btrfs: fix the file extent gap when doing direct IO
Btrfs: fix unclosed transaction handle in btrfs_cont_expand
Btrfs: fix misuse of trans block rsv
Btrfs: reset to appropriate block rsv after orphan operations
Btrfs: skip locking if searching the commit root in csum lookup
btrfs: fix warning in iput for bad-inode
Btrfs: fix an oops when deleting snapshots -
kmemleak is reporting that 32 bytes are being leaked by FUSE:
unreferenced object 0xe373b270 (size 32):
comm "fusermount", pid 1207, jiffies 4294707026 (age 2675.187s)
hex dump (first 32 bytes):
01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[] kmemleak_alloc+0x27/0x50
[] kmem_cache_alloc+0xc5/0x180
[] fuse_alloc_forget+0x1e/0x20
[] fuse_alloc_inode+0xb0/0xd0
[] alloc_inode+0x1c/0x80
[] iget5_locked+0x8f/0x1a0
[] fuse_iget+0x72/0x1a0
[] fuse_get_root_inode+0x8a/0x90
[] fuse_fill_super+0x3ef/0x590
[] mount_nodev+0x3f/0x90
[] fuse_mount+0x15/0x20
[] mount_fs+0x1c/0xc0
[] vfs_kern_mount+0x41/0x90
[] do_kern_mount+0x39/0xd0
[] do_mount+0x2e5/0x660
[] sys_mount+0x66/0xa0This leak report is consistent and happens once per boot on
3.1.0-rc5-dirty.This happens if a FORGET request is queued after the fuse device was
released.Reported-by: Sitsofe Wheeler
Signed-off-by: Miklos Szeredi
Tested-by: Sitsofe Wheeler
Signed-off-by: Linus Torvalds -
Commit 37fb3a30b4 ("fuse: fix flock") added in 3.1-rc4 caused flock() to
fail with ENOSYS with the kernel ABI version 7.16 or earlier.Fix by falling back to testing FUSE_POSIX_LOCKS for ABI versions 7.16
and earlier.Reported-by: Martin Ziegler
Signed-off-by: Miklos Szeredi
Tested-by: Martin Ziegler
Signed-off-by: Linus Torvalds
12 Sep, 2011
3 commits
-
* 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus:
[media] vp7045: fix buffer setup
[media] nuvoton-cir: simplify raw IR sample handling
[media] [Resend] viacam: Don't explode if pci_find_bus() returns NULL
[media] v4l2: Fix documentation of the codec device controls
[media] gspca - sonixj: Fix the darkness of sensor om6802 in 320x240
[media] gspca - sonixj: Fix wrong register mask for sensor om6802
[media] gspca - ov519: Fix LED inversion of some ov519 webcams
[media] pwc: precedence bug in pwc_init_controls() -
* 'for-linus' of git://openrisc.net/~jonas/linux:
Add missing DMA ops
openrisc: don't use pt_regs in struct sigcontext
11 Sep, 2011
19 commits
-
You can see there's no file extent with range [0, 4096]. Check this by
btrfsck:# btrfsck /dev/sda7
root 5 inode 258 errors 100
...Signed-off-by: Li Zefan
Signed-off-by: Chris Mason -
num_bytes should be 4096 not 12288.
Signed-off-by: Li Zefan
Signed-off-by: Chris Mason -
An attribute is not removed by 'setfattr -x attr file' and remains
visible in attr list. This makes xfstests/062 pass again.Signed-off-by: David Sterba
Signed-off-by: Chris Mason -
If we write some data into the data hole of the file(no preallocation for this
hole), Btrfs will allocate some disk space, and update nbytes of the inode, but
the other element--disk_i_size needn't be updated. At this condition, we must
update inode metadata though disk_i_size is not changed(btrfs_ordered_update_i_size()
return 1).# mkfs.btrfs /dev/sdb1
# mount /dev/sdb1 /mnt
# touch /mnt/a
# truncate -s 856002 /mnt/a
# dd if=/dev/zero of=/mnt/a bs=4K count=1 conv=nocreat,notrunc
# umount /mnt
# btrfsck /dev/sdb1
root 5 inode 257 errors 400
found 32768 bytes used err is 1Signed-off-by: Miao Xie
Signed-off-by: Chris Mason -
When we write some data to the place that is beyond the end of the file
in direct I/O mode, a data hole will be created. And Btrfs should insert
a file extent item that point to this hole into the fs tree. But unfortunately
Btrfs forgets doing it.The following is a simple way to reproduce it:
# mkfs.btrfs /dev/sdc2
# mount /dev/sdc2 /test4
# touch /test4/a
# dd if=/dev/zero of=/test4/a seek=8 count=1 bs=4K oflag=direct conv=nocreat,notrunc
# umount /test4
# btrfsck /dev/sdc2
root 5 inode 257 errors 100Reported-by: Tsutomu Itoh
Signed-off-by: Miao Xie
Tested-by: Tsutomu Itoh
Signed-off-by: Chris Mason -
The function - btrfs_cont_expand() forgot to close the transaction handle before
it jump out the while loop. Fix it.Signed-off-by: Miao Xie
Signed-off-by: Chris Mason -
At the beginning of create_pending_snapshot, trans->block_rsv is set
to pending->block_rsv and is used for snapshot things, however, when
it is done, we do not recover it as will.Signed-off-by: Liu Bo
Signed-off-by: Chris Mason -
While truncating free space cache, we forget to change trans->block_rsv
back to the original one, but leave it with the orphan_block_rsv, and
then with option inode_cache enable, it leads to countless warnings of
btrfs_alloc_free_block and btrfs_orphan_commit_root:WARNING: at fs/btrfs/extent-tree.c:5711 btrfs_alloc_free_block+0x180/0x350 [btrfs]()
...
WARNING: at fs/btrfs/inode.c:2193 btrfs_orphan_commit_root+0xb0/0xc0 [btrfs]()Signed-off-by: Liu Bo
Signed-off-by: Chris Mason -
It's not enough to just search the commit root, since we could be cow'ing the
very block we need to search through, which would mean that its locked and we'll
still deadlock. So use path->skip_locking as well. Thanks,Signed-off-by: Josef Bacik
Signed-off-by: Chris Mason -
iput() shouldn't be called for inodes in I_NEW state.
We need to mark inode as constructed first.WARNING: at fs/inode.c:1309 iput+0x20b/0x210()
Call Trace:
[] warn_slowpath_common+0x7a/0xb0
[] warn_slowpath_null+0x15/0x20
[] iput+0x20b/0x210
[] btrfs_iget+0x1eb/0x4a0
[] btrfs_run_defrag_inodes+0x136/0x210
[] cleaner_kthread+0x17f/0x1a0
[] ? sub_preempt_count+0x9d/0xd0
[] ? transaction_kthread+0x280/0x280
[] kthread+0x96/0xa0
[] kernel_thread_helper+0x4/0x10
[] ? kthread_worker_fn+0x190/0x190
[] ? gs_change+0xb/0xbSigned-off-by: Sergei Trofimovich
CC: Konstantin Khlebnikov
Tested-by: David Sterba
CC: Josef Bacik
CC: Chris Mason
Signed-off-by: Chris Mason -
We can reproduce this oops via the following steps:
$ mkfs.btrfs /dev/sdb7
$ mount /dev/sdb7 /mnt/btrfs
$ for ((i=0; ii_ino
to BTRFS_EMPTY_SUBVOL_DIR_OBJECTID instead of BTRFS_FIRST_FREE_OBJECTID,
while the snapshot's location.objectid remains unchanged.However, btrfs_ino() does not take this into account, and returns a wrong ino,
and causes the oops.Signed-off-by: Liu Bo
Signed-off-by: Chris Mason -
dvb_usb_device_init calls the frontend_attach method of this driver which
uses vp7045_usb_ob. In order to have a buffer ready in vp7045_usb_op, it has to
be allocated before that happens.Luckily we can use the whole private data as the buffer as it gets separately
allocated on the heap via kzalloc in dvb_usb_device_init and is thus apt for
use via usb_control_msg.This fixes a
BUG: unable to handle kernel paging request at 0000000000001e78reported by Tino Keitel and diagnosed by Dan Carpenter.
Cc: stable@kernel.org # For v3.0 and upper
Tested-by: Tino Keitel
Signed-off-by: Florian Mickler
Signed-off-by: Mauro Carvalho Chehab -
The nuvoton-cir driver was storing up consecutive pulse-pulse and
space-space samples internally, for no good reason, since
ir_raw_event_store_with_filter() already merges back to back like
samples types for us. This should also fix a regression introduced late
in 3.0 that related to a timeout change, which actually becomes correct
when coupled with this change. Tested with RC6 and RC5 on my own
nuvoton-cir hardware atop vanilla 3.0.0, after verifying quirky
behavior in 3.0 due to the timeout change.Reported-by: Stephan Raue
CC: Stephan Raue
CC: stable@vger.kernel.org
Signed-off-by: Jarod Wilson
Signed-off-by: Mauro Carvalho Chehab -
In the unlikely case that pci_find_bus() should return NULL
viacam_serial_is_enabled() is going to dereference a NULL pointer and
blow up. Better safe than sorry, so be defensive and check the
pointer.Signed-off-by: Jesper Juhl
Acked-by: Jonathan Corbet
Signed-off-by: Mauro Carvalho Chehab -
Fixed missing ids of the codec controls description in the controls.xml file.
Signed-off-by: Kamil Debski
Signed-off-by: Kyungmin Park
Reported-by: Randy Dunlap
Acked-by: Randy Dunlap
Signed-off-by: Mauro Carvalho Chehab -
The images are clearer with a lower bridge clock.
Signed-off-by: Jean-François Moine
Signed-off-by: Mauro Carvalho Chehab -
The bug was introduced by git commit 0e4d413af1a9d, giving very dark images.
Signed-off-by: Luiz Carlos Ramos
Signed-off-by: Jean-François Moine
Signed-off-by: Mauro Carvalho Chehab -
The list of the webcams which have LED inversion was rebuild scanning
ms-win .inf files.Signed-off-by: Jean-François Moine
Signed-off-by: Mauro Carvalho Chehab -
'!' has higher precedence than '&' so we need parenthesis here.
Signed-off-by: Dan Carpenter
Signed-off-by: Hans de Goede
Signed-off-by: Mauro Carvalho Chehab
