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We set the "it's dead, don't mount on it" flag _and_ do not remove it if
we turn the damn thing negative and leave it around. And if it goes
positive afterwards, well...
Fortunately, there's only one place where that needs to be caught:
only d_delete() can turn the sucker negative without immediately freeing
it; all other places that can lead to ->d_iput() call are followed by
unconditionally freeing struct dentry in question. So the fix is obvious:
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16014
Reported-by: Adam Tkac <vonsch@gmail.com>
Tested-by: Adam Tkac <vonsch@gmail.com>
Cc: <stable@kernel.org> [2.6.34.x]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
udf: BKL ioctl pushdown
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (92 commits)
powerpc: Remove unused 'protect4gb' boot parameter
powerpc: Build-in e1000e for pseries & ppc64_defconfig
powerpc/pseries: Make request_ras_irqs() available to other pseries code
powerpc/numa: Use ibm,architecture-vec-5 to detect form 1 affinity
powerpc/numa: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim
powerpc: Use smt_snooze_delay=-1 to always busy loop
powerpc: Remove check of ibm,smt-snooze-delay OF property
powerpc/kdump: Fix race in kdump shutdown
powerpc/kexec: Fix race in kexec shutdown
powerpc/kexec: Speedup kexec hash PTE tear down
powerpc/pseries: Add hcall to read 4 ptes at a time in real mode
powerpc: Use more accurate limit for first segment memory allocations
powerpc/kdump: Use chip->shutdown to disable IRQs
powerpc/kdump: CPUs assume the context of the oopsing CPU
powerpc/crashdump: Do not fail on NULL pointer dereferencing
powerpc/eeh: Fix oops when probing in early boot
powerpc/pci: Check devices status property when scanning OF tree
powerpc/vio: Switch VIO Bus PM to use generic helpers
powerpc: Avoid bad relocations in iSeries code
powerpc: Use common cpu_die (fixes SMP+SUSPEND build)
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (207 commits)
drm/radeon/kms/pm/r600: select the mid clock mode for single head low profile
drm/radeon: fix power supply kconfig interaction.
drm/radeon/kms: record object that have been list reserved
drm/radeon: AGP memory is only I/O if the aperture can be mapped by the CPU.
drm/radeon/kms: don't default display priority to high on rs4xx
drm/edid: fix typo in 1600x1200@75 mode
drm/nouveau: fix i2c-related init table handlers
drm/nouveau: support init table i2c device identifier 0x81
drm/nouveau: ensure we've parsed i2c table entry for INIT_*I2C* handlers
drm/nouveau: display error message for any failed init table opcode
drm/nouveau: fix init table handlers to return proper error codes
drm/nv50: support fractional feedback divider on newer chips
drm/nv50: fix monitor detection on certain chipsets
drm/nv50: store full dcb i2c entry from vbios
drm/nv50: fix suspend/resume with DP outputs
drm/nv50: output calculated crtc pll when debugging on
drm/nouveau: dump pll limits entries when debugging is on
drm/nouveau: bios parser fixes for eDP boards
drm/nouveau: fix a nouveau_bo dereference after it's been destroyed
drm/nv40: remove some completed ctxprog TODOs
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'dbg-early-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
echi-dbgp: Add kernel debugger support for the usb debug port
earlyprintk,vga,kdb: Fix \b and \r for earlyprintk=vga with kdb
kgdboc: Add ekgdboc for early use of the kernel debugger
x86,early dr regs,kgdb: Allow kernel debugger early dr register access
x86,kgdb: Implement early hardware breakpoint debugging
x86, kgdb, init: Add early and late debug states
x86, kgdb: early trap init for early debug
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'kdb-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: (25 commits)
kdb,debug_core: Allow the debug core to receive a panic notification
MAINTAINERS: update kgdb, kdb, and debug_core info
debug_core,kdb: Allow the debug core to process a recursive debug entry
printk,kdb: capture printk() when in kdb shell
kgdboc,kdb: Allow kdb to work on a non open console port
kgdb: Add the ability to schedule a breakpoint via a tasklet
mips,kgdb: kdb low level trap catch and stack trace
powerpc,kgdb: Introduce low level trap catching
x86,kgdb: Add low level debug hook
kgdb: remove post_primary_code references
kgdb,docs: Update the kgdb docs to include kdb
kgdboc,keyboard: Keyboard driver for kdb with kgdb
kgdb: gdb "monitor" -> kdb passthrough
sparc,sunzilog: Add console polling support for sunzilog serial driver
sh,sh-sci: Use NO_POLL_CHAR in the SCIF polled console code
kgdb,8250,pl011: Return immediately from console poll
kgdb: core changes to support kdb
kdb: core for kgdb back end (2 of 2)
kdb: core for kgdb back end (1 of 2)
kgdb,blackfin: Add in kgdb_arch_set_pc for blackfin
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (59 commits)
HID: fix up 'EMBEDDED' mess in Kconfig
HID: roccat: cleanup preprocessor macros
HID: roccat: refactor special event handling
HID: roccat: fix special button support
HID: roccat: Correctly mark init and exit functions
HID: hidraw: Use Interrupt Endpoint for OUT Transfers if Available
HID: hid-samsung: remove redundant key mappings
HID: add omitted hid-zydacron.c file
HID: hid-samsung: add support for Creative Desktop Wireless 6000
HID: picolcd: Eliminate use after free
HID: Zydacron Remote Control driver
HID: Use kmemdup
HID: magicmouse: fix input registration
HID: make Prodikeys driver standalone config option
HID: Prodikeys PC-MIDI HID Driver
HID: hidraw: fix indentation
HID: ntrig: add filtering module parameters
HID: ntrig: add sysfs access to filter parameters
HID: ntrig: add sensitivity and responsiveness support
HID: add multi-input quirk for eGalax Touchcontroller
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (31 commits)
dquot: Detect partial write error to quota file in write_blk() and add printk_ratelimit for quota error messages
ocfs2: Fix lock inversion in quotas during umount
ocfs2: Use __dquot_transfer to avoid lock inversion
ocfs2: Fix NULL pointer deref when writing local dquot
ocfs2: Fix estimate of credits needed for quota allocation
ocfs2: Fix quota locking
ocfs2: Avoid unnecessary block mapping when refreshing quota info
ocfs2: Do not map blocks from local quota file on each write
quota: Refactor dquot_transfer code so that OCFS2 can pass in its references
quota: unify quota init condition in setattr
quota: remove sb_has_quota_active in get/set_info
quota: unify ->set_dqblk
quota: unify ->get_dqblk
ext3: make barrier options consistent with ext4
quota: Make quota stat accounting lockless.
suppress warning: "quotatypes" defined but not used
ext3: Fix waiting on transaction during fsync
jbd: Provide function to check whether transaction will issue data barrier
ufs: add ufs speciffic ->setattr call
BKL: Remove BKL from ext2 filesystem
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (113 commits)
omap4: Add support for i2c init
omap: Fix i2c platform init code for omap4
OMAP2 clock: fix recursive spinlock attempt when CONFIG_CPU_FREQ=y
OMAP powerdomain, hwmod, omap_device: add some credits
OMAP4 powerdomain: Support LOWPOWERSTATECHANGE for powerdomains
OMAP3 clock: add support for setting the divider for sys_clkout2 using clk_set_rate
OMAP4 powerdomain: Fix pwrsts flags for ALWAYS ON domains
OMAP: timers: Fix clock source names for OMAP4
OMAP4 clock: Support clk_set_parent
OMAP4: PRCM: Add offset defines for all CM registers
OMAP4: PRCM: Add offset defines for all PRM registers
OMAP4: PRCM: Remove duplicate definition of base addresses
OMAP4: PRM: Remove MPU internal code name and apply PRCM naming convention
OMAP4: CM: Remove non-functional registers in ES1.0
OMAP: hwmod: Replace WARN by pr_warning for clockdomain check
OMAP: hwmod: Rename hwmod name for the MPU
OMAP: hwmod: Do not exit the iteration if one clock init failed
OMAP: hwmod: Replace WARN by pr_warning if clock lookup failed
OMAP: hwmod: Remove IS_ERR check with omap_clk_get_by_name return value
OMAP: hwmod: Fix wrong pointer iteration in oh->slaves
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c-nforce2: Remove redundant error messages on ACPI conflict
i2c: Use <linux/io.h> instead of <asm/io.h>
i2c-algo-pca: Fix coding style issues
i2c-dev: Fix all coding style issues
i2c-core: Fix some coding style issues
i2c-gpio: Move initialization code to subsys_initcall()
i2c-parport: Make template structure const
i2c-dev: Remove unnecessary casts
at24: Fall back to byte or word reads if needed
i2c-stub: Expose the default functionality flags
i2c/scx200_acb: Make PCI device ids constant
i2c-i801: Fix all checkpatch warnings
i2c-i801: All newer devices have all the optional features
i2c-i801: Let the user disable selected driver features
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (25 commits)
serial: Tidy REMOTE_DEBUG
serial: isicomm: handle running out of slots
serial: bfin_sport_uart: Use resource size to fix off-by-one error
tty: fix obsolete comment on tty_insert_flip_string_fixed_flag
serial: Add driver for the Altera UART
serial: Add driver for the Altera JTAG UART
serial: timbuart: make sure last byte is sent when port is closed
serial: two branches the same in timbuart_set_mctrl()
serial: uartlite: move from byte accesses to word accesses
tty: n_gsm: depends on NET
tty: n_gsm line discipline
serial: TTY: new ldiscs for staging
serial: bfin_sport_uart: drop redundant cpu depends
serial: bfin_sport_uart: drop the experimental markings
serial: bfin_sport_uart: pull in bfin_sport.h for SPORT defines
serial: bfin_sport_uart: only enable SPORT TX if data is to be sent
serial: bfin_sport_uart: drop useless status masks
serial: bfin_sport_uart: zero sport_uart_port if allocated dynamically
serial: bfin_sport_uart: protect changes to uart_port
serial: bfin_sport_uart: add support for CTS/RTS via GPIOs
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (38 commits)
net: Expose all network devices in a namespaces in sysfs
hotplug: netns aware uevent_helper
kobj: Send hotplug events in the proper namespace.
netlink: Implment netlink_broadcast_filtered
net/sysfs: Fix the bitrot in network device kobject namespace support
netns: Teach network device kobjects which namespace they are in.
kobject: Send hotplug events in all network namespaces
driver-core: fix Typo in drivers/base/core.c for CONFIG_MODULE
pci: check caps from sysfs file open to read device dependent config space
sysfs: add struct file* to bin_attr callbacks
sysfs: Remove usage of S_BIAS to avoid merge conflict with the vfs tree
sysfs: Don't use enums in inline function declaration.
sysfs-namespaces: add a high-level Documentation file
sysfs: Comment sysfs directory tagging logic
driver core: Implement ns directory support for device classes.
sysfs: Implement sysfs_delete_link
sysfs: Add support for tagged directories with untagged members.
sysfs: Implement sysfs tagged directory support.
kobj: Add basic infrastructure for dealing with namespaces.
sysfs: Remove double free sysfs_get_sb
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Fix kernel-doc fatal error:
/** beginning a non-kernel-doc comment block:
(That alone does not kill kernel-doc, but the 'enum' was
totally confusing to it.)
Error(/lnx/src/TMP/linux-2.6.34-git6//include/linux/interrupt.h:88): cannot understand prototype: 'enum '
make[2]: *** [Documentation/DocBook/genericirq.xml] Error 1
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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printk_ratelimit for quota error messages
This patch changes quota_tree.c:write_blk() to detect error caused by partial
write to quota file and add a macro to limit control printed quota error
messages so we won't fill up dmesg with a corrupted quota file.
Signed-off-by: Jiaying Zhang <jiayingz@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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We cannot cancel delayed work from ocfs2_local_free_info because that is called
with dqonoff_mutex held and the work it cancels requires dqonoff_mutex to
finish. Cancel the work before acquiring dqonoff_mutex.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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dquot_transfer() acquires own references to dquots via dqget(). Thus it waits
for dq_lock which creates a lock inversion because dq_lock ranks above
transaction start but transaction is already started in ocfs2_setattr(). Fix
the problem by passing own references directly to __dquot_transfer.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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commit_dqblk() can write quota info to global file. That is actually a bad
thing to do because if we are just modifying local quota file, we are not
prepared (do not hold proper locks, do not have transaction credits) to do
a modification of the global quota file. So do not use commit_dqblk() and
instead call our writing function directly.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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We were missing reservation of a journal credit for modification of quota
file inode when creating new dquot structure in the global quota file.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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OCFS2 had three issues with quota locking:
a) When reading dquot from global quota file, we started a transaction while
holding dqio_mutex which is prone to deadlocks because other paths do it
the other way around
b) During ocfs2_sync_dquot we were not protected against concurrent writers
on the same node. Because we first copy data to local buffer, a race
could happen resulting in old data being written to global quota file and
thus causing quota inconsistency after a crash.
c) ip_alloc_sem of quota files was acquired while a transaction is started
in ocfs2_quota_write which can deadlock because we first get ip_alloc_sem
and then start a transaction when extending quota files.
We fix the problem a) by pulling all necessary code to ocfs2_acquire_dquot
and ocfs2_release_dquot. Thus we no longer depend on generic dquot_acquire
to do the locking and can force proper lock ordering.
Problems b) and c) are fixed by locking i_mutex and ip_alloc_sem of
global quota file in ocfs2_lock_global_qf and removing ip_alloc_sem from
ocfs2_quota_read and ocfs2_quota_write.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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The position of global quota file info does not change. So we do not have
to do logical -> physical block translation every time we reread it from
disk. Thus we can also avoid taking ip_alloc_sem.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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There is no need to map offset of local dquot structure to on disk block
in each quota write. It is enough to map it just once and store the physical
block number in quota structure in memory. Moreover this simplifies locking
as we do not have to take ip_alloc_sem from quota write path.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Currently, __dquot_transfer() acquires its own references of dquot structures
that will be put into inode. But for OCFS2, this creates a lock inversion
between dq_lock (waited on in dqget) and transaction start (started in
ocfs2_setattr). Currently, deadlock is impossible because dq_lock is acquired
only during dquot_acquire and dquot_release and we already hold a reference to
dquot structures in ocfs2_setattr so neither of these functions can be called
while we call dquot_transfer. But this is rather subtle and it is hard to teach
lockdep about it. So provide __dquot_transfer function that can be passed dquot
references directly. OCFS2 can then pass acquired dquot references directly to
__dquot_transfer with proper locking.
Signed-off-by: Jan Kara <jack@suse.cz>
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Quota must being initialized if size or uid/git changes requested.
But initialization performed in two different places:
in case of i_size file system is responsible for dquot init
, but in case of uid/gid init will be called internally in
dquot_transfer().
This ambiguity makes code harder to understand.
Let's move this logic to one common helper function.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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The methods already do these checks, so remove them in the quotactl
implementation to allow non-VFS quota implementations to also support
these calls.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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Pass the larger struct fs_disk_quota to the ->set_dqblk operation so
that the Q_SETQUOTA and Q_XSETQUOTA operations can be implemented
with a single filesystem operation and we can retire the ->set_xquota
operation. The additional information (RT-subvolume accounting and
warn counts) are left zero for the VFS quota implementation.
Add new fieldmask values for setting the numer of blocks and inodes
values which is required for the VFS quota, but wasn't for XFS.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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Pass the larger struct fs_disk_quota to the ->get_dqblk operation so
that the Q_GETQUOTA and Q_XGETQUOTA operations can be implemented
with a single filesystem operation and we can retire the ->get_xquota
operation. The additional information (RT-subvolume accounting and
warn counts) are left zero for the VFS quota implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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ext4 was updated to accept barrier/nobarrier mount options
in addition to the older barrier=0/1. The barrier story
is complex enough, we should help people by making the options
the same at least, even if the defaults are different.
This patch allows the barrier/nobarrier mount options for ext3,
while keeping nobarrier the default.
It also unconditionally displays barrier status in show_options,
and prints a message at mount time if barriers are not enabled,
just as ext4 does.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Quota stats is mostly writable data structure. Let's alloc percpu
bucket for each value.
NOTE: dqstats_read() function is racy against dqstats_{inc,dec}
and may return inconsistent value. But this is ok since absolute
accuracy is not required.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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Suppress compilation warning: "quotatypes" defined but not used.
quotatypes is used only when CONFIG_QUOTA_DEBUG or CONFIG_PRINT_QUOTA_WARNING
is/are defined.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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log_start_commit() returns 1 only when it started a transaction
commit. Thus in case transaction commit is already running, we
fail to wait for the commit to finish. Fix the issue by always
waiting for the commit regardless of the log_start_commit return
value.
Signed-off-by: Jan Kara <jack@suse.cz>
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Provide a function which returns whether a transaction with given tid
will send a barrier to the filesystem device. The function will be used
by ext3 to detect whether fsync needs to send a separate barrier or not.
Signed-off-by: Jan Kara <jack@suse.cz>
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generic setattr not longer responsible for quota transfer.
use ufs_setattr for all ufs's inodes.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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The BKL is still used in ext2_put_super(), ext2_fill_super(), ext2_sync_fs()
ext2_remount() and ext2_write_inode(). From these calls ext2_put_super(),
ext2_fill_super() and ext2_remount() are protected against each other by
the struct super_block s_umount rw semaphore. The call in ext2_write_inode()
could only protect the modification of the ext2_sb_info through
ext2_update_dynamic_rev() against concurrent ext2_sync_fs() or ext2_remount().
ext2_fill_super() and ext2_put_super() can be left out because you need a
valid filesystem reference in all three cases, which you do not have when
you are one of these functions.
If the BKL is only protecting the modification of the ext2_sb_info it can
safely be removed since this is protected by the struct ext2_sb_info s_lock.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
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Add a spinlock that protects against concurrent modifications of
s_mount_state, s_blocks_last, s_overhead_last and the content of the
superblock's buffer pointed to by sbi->s_es. The spinlock is now used in
ext2_xattr_update_super_block() which was setting the
EXT2_FEATURE_COMPAT_EXT_ATTR flag on the superblock without protection
before. Likewise the spinlock is used in ext2_show_options() to have a
consistent view of the mount options.
This is a preparation patch for removing the BKL from ext2 in the next
patch.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jan Kara <jack@suse.cz>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Jan Kara <jack@suse.cz>
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Move ext2_write_super() out of ext2_setup_super() as a preparation for the
next patch that adds a new lock for superblock fields.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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Both function originally did similar things except that ext2_sync_super()
is returning after the call to sync_dirty_buffer(sbh). Therefore this
patch adds a wait flag to tell ext2_sync_super() if it has to call
sync_dirty_buffer() to wait for in-progress I/O to finish.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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Depending in the state (valid or unchecked) of the filesystem either
ext2_sync_super() or ext2_commit_super() is called. If the filesystem is
currently valid (it is checked), we first mark it unchecked and afterwards
duplicate the work that ext2_sync_super() is doing later. Therefore this
patch removes the duplicate code and calls ext2_sync_super() directly after
marking the filesystem unchecked.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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This is probably a typo since the write time should actually be updated by
ext2_sync_fs() instead of the mount time.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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ext2_sync_fs() used to duplicate the code from ext2_clear_super_error().
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
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Currently block/inode/dir counters are initialized before journal was
recovered. In fact after journal recovery this info will probably
change which results in incorrect numbers returned from statfs(2).
BUG:#15768
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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This patch removes a useless call to brelse(bitmap_bh) since at that
point bitmap_bh is NULL and slightly cleans up bitmap_bh handling.
Signed-off-by: Francis Moreau <francis.moro@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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- Skip locking if quota is dirty already.
- Return old quota state to help fs-specciffic implementation to optimize
case where quota was dirty already.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
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There is no point in loading bitmap for groups which are completely full.
This causes noticeable performance problems (and memory pressure) on small
systems with large full filesystem
(http://marc.info/?l=linux-ext4&m=126843108314310&w=2).
Port of the same ext3 patch.
Signed-off-by: Jan Kara <jack@suse.cz>
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There is no point in loading bitmap for groups which are completely full.
This causes noticeable performance problems (and memory pressure) on small
systems with large full filesystem
(http://marc.info/?l=linux-ext4&m=126843108314310&w=2).
Jan Kara: Added a comment and changed check to use cpu-endian value.
Signed-off-by: "Frans van de Wiel" <fvdw@fvdw.eu>
Signed-off-by: Jan Kara <jack@suse.cz>
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The removal of the 'waitqueue_active()' test in commit d7d05548a6
("[SCSI] iscsi_tcp: fix relogin/shutdown hang") got incorrectly resolved
by David when he back-merged the main git tree into the networking tree
in commit 278554bd65 ("Merge branch 'master' of master.kernel.org:...").
There was a content conflict due to 'sock->sk->sk_sleep' being changed
into 'sk_sleep(sock->sk)' in the networking tree, but David didn't pick
up the iscsi change from the main tree.
Reported-by: James Bottomley <James.Bottomley@suse.de>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The ACPI subsystem strictly checks for resource conflicts. When there's
a conflict, it outputs a warning message with all the details needed to
properly diagnose the underlying issue. However, the i2c-nforce2 driver
also prints its own message. Not only is the message redundant, it is at
the KERN_ERR level, which overrides some bootsplash screens for no good
reason. This change removes the two lines that print out the error
messages.
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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As warned by checkpatch.pl, <linux/io.h> should be used instead of
<asm/io.h>.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Fix up some coding style issues. i2c-algo-pca.c has been built
successfully after applying this patch and the binary object is
still exactly the same. Other issues found by checkpatch.pl were
voluntarily not fixed, either to keep readability, or because of
false positive errors.
Signed-off-by: Farid Hammane <farid.hammane@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Fix all coding style issues found by checkpatch.pl.
Signed-off-by: Farid Hammane <farid.hammane@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Fix up coding style issues found by the checkpatch.pl tool.
Signed-off-by: Farid Hammane <farid.hammane@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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