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Assign a bootloader ID for Sebastian Plotz' "Minimal Linux Bootloader"
(http://sebastian-plotz.blogspot.de). Sebastian has agreed to make
this the pilot for the use of extended boot loader IDs, so this is
assigned version ID 0x11 (avoid assigning 0x10 for now to catch bugs
with people putting E in the primary ID but leaving the extended ID as
zero.)
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Sebastian Plotz <sebastian-plotz@web.de>
Link: http://lkml.kernel.org/n/tip-nq318h0okuaem8x9dpv9854k@git.kernel.org
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Pull samsung arm-soc dma changes from Arnd Bergmann:
"Some platforms are not yet converted to use the dmaengine framework,
including some of the samsung SoCs. In the meantime, we treat this as
platform code and merge the patches through the arm-soc tree."
* tag 'dma' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: SAMSUNG: Fix compiler warning in dma-ops.c file
ASoC: follow the updated samsung DMA common operations
spi/s3c64xx: Add the use of DMA config operation
ARM: SAMSUNG: Add config() function in DMA common operations
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Pull arm soc-specific updates from Arnd Bergmann:
"This is stuff that does not fit well into another category and in
particular is not related to a particular board. The largest part in
here is extending the am33xx support in the omap platform."
Fix up trivial conflicts in arch/arm/mach-{imx/mach-mx35_3ds.c, tegra/Makefile}
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (74 commits)
ARM: LPC32xx: Add PWM support
ARM: LPC32xx: Add PWM clock
ARM: LPC32xx: Set system serial based on cpu unique id
ARM: vexpress: Config option for early printk console
ARM: vexpress: Add Device Tree for V2P-CA15_CA7 core tile
ARM: vexpress: Convert V2P-CA15 Device Tree to 64 bit addresses
ARM: vexpress: Add fixed regulator for SMSC
ARM: vexpress: Add missing SP804 interrupt in motherboard's DTS files
ARM: vexpress: Initial common clock support
ARM: SAMSUNG: Introduce Kconfig variable for Samsung custom clk API
ARM: EXYNOS: Add missing static storage class specifier in pmu.c file
ARM: EXYNOS: Make combiner_init function static
ARM: EXYNOS: Update HSOTG PHY clock setting for EXYNOS4X12
ARM: versatile: Make plat-versatile clock optional
ARM: vexpress: Check master site in daughterboard's sysctl operations
ARM: vexpress: remove automatic errata workaround selection
ARM: LPC32xx: Adjust to pl08x DMA interface changes
ARM: EXYNOS: Clear SYS_WDTRESET bit to use watchdog reset
ARM: imx: fix mx51 ehci setup errors
ARM: imx: make ehci power/oc polarities configurable
...
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Pull general arm-soc cleanups from Arnd Bergmann:
"These are all boring changes, moving stuff around or renaming things
mostly, and also getting rid of stuff that is duplicate or should not
be there to start with. Platform-wise this is all over the place,
mainly omap, samsung, at91, imx and tegra."
Resolve trivial conflict in arch/arm/mach-omap2/clockdomains3xxx_data.c
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (67 commits)
ARM: clps711x: Remove the setting of the time
ARM: clps711x: Removed superfluous transform virt_to_bus and related functions
ARM: clps711x/p720t: Replace __initcall by .init_early call
ARM: S3C24XX: Remove unused GPIO definitions for Openmoko GTA02 board
ARM: S3C24XX: Remove unused GPIO definitions for port J
ARM: S3C24XX: Remove unused GPA, GPE, GPH bank GPIO aliases
ARM: S3C24XX: Convert the touchscreen setup code to common GPIO API
ARM: S3C24XX: Convert the PM code to gpiolib API
ARM: S3C24XX: Convert QT2410 board file to the gpiolib API
ARM: S3C24XX: Convert SMDK board file to the gpiolib API
ARM: S3C24XX: Free the backlight gpio requested in Mini2440 board code
ARM: imx: remove unused pdata from device macros
ARM: imx: Kconfig: Remove IMX_HAVE_PLATFORM_IMX_SSI from MACH_MX25_3DS
ARM: at91: fix new build errors
ARM: at91: add AIC5 support
ARM: at91: remove mach/irqs.h
ARM: at91: sparse irq support
ARM: at91: at91 based machines specify their own irq handler at run time
ARM: at91: remove static irq priorities for sam9x5
ARM: at91: add of irq priorities support
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull non-critical arm-soc bug fixes from Arnd Bergmann:
"These were submitted as bug fixes before v3.5 but not considered
important enough to be included in it."
* tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits)
ARM:vt8500: Convert to use .restart and remove arch_reset()
ARM: davinci: da8xx: fix interrupt handling
ARM: OMAP2+: fix CONFIG_CPU_IDLE dependency on CONFIG_PM
ARM: mxs/tx28: fix odd include
ARM: OMAP: remove unused cpu detection macros
ARM: OMAP: fix typos related to OMAP330
ARM: OMAP7XX: Remove omap730.h and omap850.h
ARM: OMAP2+: fix naming collision of variable nr_irqs
ARM: OMAP: omap2plus_defconfig: Enable EXT4 support
ARM: OMAP depends on MMU
arm: omap3: am35x: Set proper powerdomain states
ARM: OMAP AM35x: clockdomain data: Fix clockdomain dependencies
ARM: OMAP AM35x: EMAC/MDIO integration: Add Davinci EMAC/MDIO hwmod support
ARM: OMAP: AM35xx: fix UART4 softreset
ARM: OMAP AM35xx: clock and hwmod data: fix UART4 data
ARM: OMAP AM35xx: clock and hwmod data: fix AM35xx HSOTGUSB hwmod
ARM: OMAP: Fix dts files w/ status property: "disable" -> "disabled"
ARM: OMAP: beagle: Set USB Host Port 1 to OMAP_USBHS_PORT_MODE_UNUSED
ARM: OMAP2: twl-common: Fix compiler warning
ARM: OMAP: fix the ads7846 init code
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Pull UBI changes from Artem Bityutskiy:
"Change the default amount of eraseblocks which UBI reserves for bad
block handling from 1% to 2%, because 1% does not meet most modern
flash requirements. 1% was good enough in the past for old
high-quality SLCs, but nowadays 2% is much more appropriate.:
Other changes are clean-ups.
* tag 'upstream-3.6-rc1' of git://git.infradead.org/linux-ubi:
UBI: harmonize the update of ubi->beb_rsvd_pebs
UBI: trivial: fix comment of ubi_calculate_reserved function
UBI: fix spelling of detach in debug output
UBI: Change the default percentage of reserved PEB
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Pull UBIFS updates from Artem Bityutskiy:
- Added another debugfs knob for forcing UBIFS R/O mode without
flushing caches or finishing commit or any other I/O operation. I've
originally added this knob in order to reproduce the free space fixup
bug (see commit c6727932cfdb: "UBIFS: fix a bug in empty space
fix-up") on nandsim.
Without this knob I would have to do real power-cuts, which would
make debugging much harder. Then I've decided to keep this knob
because it is also useful for UBIFS power-cut recovery end
error-paths testing.
- Well-spotted fix from Julia. This bug did not cause real troubles
for UBIFS, but nevertheless it could cause issues for someone trying
to modify the orphans handling code. Kudos to coccinelle!
- Minor cleanups.
* tag 'upstream-3.6-rc1' of git://git.infradead.org/linux-ubifs:
UBIFS: remove invalid reference to list iterator variable
UBIFS: simplify reply code a bit
UBIFS: add debugfs knob to switch to R/O mode
UBIFS: fix compilation warning
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"smb2" makes me think of the SMB2.x protocol, which isn't at all what
this function is for...
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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There's a comment here about how we don't want to modify this length,
but nothing in this function actually does.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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struct file_lock is pretty large, so we really don't want that on the
stack in a potentially long call chain. Reorganize the arguments to
CIFSSMBPosixLock to eliminate the need for that.
Eliminate the get_flag and simply use a non-NULL pLockInfo to indicate
that this is a "get" operation. In order to do that, need to add a new
loff_t argument for the start_offset.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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Those macros add a newline on their own, so there's not any need to
embed one in the message itself.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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Calling key_revoke here isn't ideal as further requests for the key will
end up returning -EKEYREVOKED until it gets purged from the cache. What we
really intend here is to force a new upcall on the next request_key.
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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While testing with my buffer read fio jobs[1], I find that btrfs does not
perform well enough.
Here is a scenario in fio jobs:
We have 4 threads, "t1 t2 t3 t4", starting to buffer read a same file,
and all of them will race on add_to_page_cache_lru(), and if one thread
successfully puts its page into the page cache, it takes the responsibility
to read the page's data.
And what's more, reading a page needs a period of time to finish, in which
other threads can slide in and process rest pages:
t1 t2 t3 t4
add Page1
read Page1 add Page2
| read Page2 add Page3
| | read Page3 add Page4
| | | read Page4
-----|------------|-----------|-----------|--------
v v v v
bio bio bio bio
Now we have four bios, each of which holds only one page since we need to
maintain consecutive pages in bio. Thus, we can end up with far more bios
than we need.
Here we're going to
a) delay the real read-page section and
b) try to put more pages into page cache.
With that said, we can make each bio hold more pages and reduce the number
of bios we need.
Here is some numbers taken from fio results:
w/o patch w patch
------------- -------- ---------------
READ: 745MB/s +25% 934MB/s
[1]:
[global]
group_reporting
thread
numjobs=4
bs=32k
rw=read
ioengine=sync
directory=/mnt/btrfs/
[READ]
filename=foobar
size=2000M
invalidate=1
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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For backref walking, we've introduce delayed ref's sequence. However,
it changes our preallocation behavior.
The story is that when we preallocate an extent and then mark it written
piece by piece, the ideal case should be that we don't need to COW the
extent, which is why we use 'preallocate'.
But we may not make use of preallocation, since when we check for cross refs on
the extent, we may have two ref entries which have the same content except
the sequence value, and we recognize them as cross refs and do COW to allocate
another extent.
So we end up with several pieces of space instead of an whole extent.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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There is a small window where an eb can have no IO bits set on it, which
could potentially result in extent_buffer_under_io() returning false when we
want it to return true, which could result in not fun things happening. So
in order to protect this case we need to hold the refs_lock when we make
this transition to make sure we get reliable results out of
extent_buffer_udner_io(). Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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This sounds sort of impossible but it is the only thing I can think of and
at the very least it is theoretically possible so here it goes.
If we are in try_release_extent_buffer we will check that the ref count on
the extent buffer is 1 and not under IO, and then go down and clear the tree
ref. If between this check and clearing the tree ref somebody else comes in
and grabs a ref on the eb and the marks it dirty before
try_release_extent_buffer() does it's tree ref clear we can end up with a
dirty eb that will be freed while it is still dirty which will result in a
panic. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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I noticed while looking at an extent_buffer race that we will
unconditionally return 1 if we get down to release_extent_buffer after
clearing the tree ref. However we can easily race in here and get a ref on
the eb and not actually free the eb. So make release_extent_buffer return 1
if it free'd the eb and 0 if not so we can be a little kinder to the vm.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Code is added to suppress the I/O stats printing at mount time if all
statistic values are zero.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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People complained about the annoying kernel log message
"btrfs: no dev_stats entry found ... (OK on first mount after mkfs)"
everytime a filesystem is mounted for the first time after running
mkfs. Since the distribution of the btrfs-progs is not synchronized
to the kernel version, mkfs like it is now will be used also in the
future. Then this message is not useful to find errors, it is just
annoying. This commit removes the printk().
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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BTRFS_SETGET_FUNCS macro is used to generate btrfs_set_foo() and
btrfs_foo() functions, which read and write specific fields in the
extent buffer.
The total number of set/get functions is ~200, but in fact we only
need 8 functions: 2 for u8 field, 2 for u16, 2 for u32 and 2 for u64.
It results in redunction of ~37K bytes.
text data bss dec hex filename
629661 12489 216 642366 9cd3e fs/btrfs/btrfs.o.orig
592637 12489 216 605342 93c9e fs/btrfs/btrfs.o
Signed-off-by: Li Zefan <lizefan@huawei.com>
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The otime field is not zeroed, so users will see random otime in an old
filesystem with a new kernel which has otime support in the future.
The reserved bytes are also not zeroed, and we'll have compatibility
issue if we make use of those bytes.
Signed-off-by: Li Zefan <lizefan@huawei.com>
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Inodes always allocate free space with BTRFS_BLOCK_GROUP_DATA type,
which means every inode has the same BTRFS_I(inode)->free_space pointer.
This shrinks struct btrfs_inode by 4 bytes (or 8 bytes on 64 bits).
Signed-off-by: Li Zefan <lizefan@huawei.com>
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Changing printk_in_rcu to printk_ratelimited_in_rcu will suffice
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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When calling btrfs_next_old_leaf, we were leaking an extent buffer in the
rare case of using the deadlock avoidance code needed for the tree mod log.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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If a block group is ro, do not count its entries in when we dump space info.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Block group has ro attributes, make dump_space_info show it.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Here is the whole story:
1)
A free space cache consists of two parts:
o free space cache inode, which is special becase it's stored in root tree.
o free space info, which is stored as the above inode's file data.
But we only build up another new inode and does not flush its free space info
onto disk when we _clear and setup_ free space cache, and this ends up with
that the block group cache's cache_state remains DC_SETUP instead of DC_WRITTEN.
And holding DC_SETUP means that we will not truncate this free space cache inode,
which means the disk offset of its file extent will remain _unchanged_ at least
until next transaction finishes committing itself.
2)
We can set a block group readonly when we relocate the block group.
However,
if the readonly block group covers the disk offset where our free space cache
inode is going to write, it will force the free space cache inode into
cow_file_range() and it'll end up hitting a BUG_ON.
3)
Due to the above analysis, we fix this bug by adding the missing dirty flag.
4)
However, it's not over, there is still another case, nospace_cache.
With nospace_cache, we do not want to set dirty flag, instead we just truncate
free space cache inode and bail out with setting cache state DC_WRITTEN.
We can benifit from it since it saves us another 'pre-allocation' part which
usually costs a lot.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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During disk balance, we prealloc new file extent for file data relocation,
but we may fail in 'no available space' case, and it leads to flipping btrfs
into readonly.
It is not necessary to bail out and abort transaction since we do have several
ways to rescue ourselves from ENOSPC case.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Since root can be fetched via BTRFS_I macro directly, we can save an args
for btrfs_is_free_space_inode().
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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For btree inode, its root is also 'tree root', so btree inode can be
misunderstood as a free space inode.
We should add one more check for btree inode.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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From btree_read_extent_buffer_pages(), currently repair_io_failure()
can be called with mirror_num being zero when submit_one_bio() returned
an error before. This used to cause a BUG_ON(!mirror_num) in
repair_io_failure() and indeed this is not a case that needs the I/O
repair code to rewrite disk blocks.
This commit prevents calling repair_io_failure() in this case and thus
avoids the BUG_ON() and malfunction.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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So shrink_delalloc has grown all sorts of cruft over the years thanks to
many reworkings of how we track enospc. What happens now as we fill up the
disk is we will loop for freaking ever hoping to reclaim a arbitrary amount
of space of metadata, this was from when everybody flushed at the same time.
Now we only have people flushing one at a time. So instead of trying to
reclaim a huge amount of space, just try to flush a decent chunk of space,
and stop looping as soon as we have enough free space to satisfy our
reservation. This makes xfstests 224 go much faster. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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$ mkfs.btrfs /dev/sdb7
$ btrfstune -S1 /dev/sdb7
$ mount /dev/sdb7 /mnt/btrfs
mount: block device /dev/sdb7 is write-protected, mounting read-only
$ btrfs dev add /dev/sdb8 /mnt/btrfs/
Now we get a btrfs in which mnt flags has readonly but sb flags does
not. So for those ioctls that only check sb flags with MS_RDONLY, it
is going to be a problem.
Setting subvolume flags is such an ioctl, we should use mnt_want_write_file()
to check RO flags.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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mnt_want_write_file is faster when file has been opened for write.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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mnt_want_write() and mnt_want_write_file() will check sb->s_flags with
MS_RDONLY, and we don't need to do it ourselves.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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Move check of write access to mount into upper functions so that we can
use mnt_want_write_file instead, which is faster than mnt_want_write.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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It should be 10 * 1024 * 1024.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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There is weird logic I had to put in place to make sure that when we were
adding csums that we'd used the delalloc block rsv instead of the global
block rsv. Part of this meant that we had to free up our transaction
reservation before we ran the delayed refs since csum deletion happens
during the delayed ref work. The problem with this is that when we release
a reservation we will add it to the global reserve if it is not full in
order to keep us going along longer before we have to force a transaction
commit. By releasing our reservation before we run delayed refs we don't
get the opportunity to drain down the global reserve for the work we did, so
we won't refill it as often. This isn't a problem per-se, it just results
in us possibly committing transactions more and more often, and in rare
cases could cause those WARN_ON()'s to pop in use_block_rsv because we ran
out of space in our block rsv.
This also helps us by holding onto space while the delayed refs run so we
don't end up with as many people trying to do things at the same time, which
again will help us not force commits or hit the use_block_rsv warnings.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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We didn't check error of btrfs_update_inode(), but that error looks
easy to bubble back up.
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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We dereferenced "node" in the error message after freeing it. Also
btrfs_panic() can return so we should return an error code instead of
continuing.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
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There used to be a BUG_ON(ret) there before EH patch (79787eaa) went in.
Bail out with EINVAL.
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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When bailing from open_ctree() err is returned, not ret.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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This will be used in conjunction with btrfs device ready <dev>. This is
needed for initrd's to have a nice and lightweight way to tell if all of the
devices needed for a file system are in the cache currently. This keeps
them from having to do mount+sleep loops waiting for devices to show up.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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The last and final kernel user, ICMP address replies,
has been removed.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexey removed kernel side support for requests, and the
only thing we do for replies is log a message if something
doesn't look right.
As Alexey's comment indicates, this belongs in userspace (if
anywhere), and thus we can safely just get rid of this code.
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's an ipv4 defined route flag, and only ipv4 uses it.
Signed-off-by: David S. Miller <davem@davemloft.net>
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With CONFIG_SPARSE_RCU_POINTER=y sparse identified references which did not
specificy __rcu in ip_vti.c
Signed-off-by: Saurabh Mohan <saurabh.mohan@vyatta.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is redundant to set no_addr and accept_local to 0 and then set them
with other values just after that.
Signed-off-by: Lin Ming <mlin@ss.pku.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The only checks of the long argument passed to fcntl(fd,F_SETLEASE,.)
are done after converting the long to an int. Thus some illegal values
may be let through and cause problems in later code.
[ They actually *don't* cause problems in mainline, as of Dave Jones's
commit 8d657eb3b438 "Remove easily user-triggerable BUG from
generic_setlease", but we should fix this anyway. And this patch will
be necessary to fix real bugs on earlier kernels. ]
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Those crazy gentoo guys have been complaining about ENOSPC errors on their
portage volumes. This is because doing things like untar tends to create
lots of new files which will soak up all the reservation space in the
delayed inodes. Usually this gets papered over by the fact that we will try
and commit the transaction, however if this happens in the wrong spot or we
choose not to commit the transaction you will be screwed. So add the
ability to expclitly flush delayed inodes to free up space. Please test
this out guys to make sure it works since as usual I cannot reproduce.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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