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2009-09-21Merge branch 'perfcounters-rename-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Tidy up after the big rename perf: Do the big rename: Performance Counters -> Performance Events perf_counter: Rename 'event' to event_id/hw_event perf_counter: Rename list_entry -> group_entry, counter_list -> group_list Manually resolved some fairly trivial conflicts with the tracing tree in include/trace/ftrace.h and kernel/trace/trace_syscalls.c.
2009-09-21Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'writeback' of git://git.kernel.dk/linux-2.6-block: nfs: initialize the backing_dev_info when creating the server writeback: make balance_dirty_pages() gradually back more off writeback: don't use schedule_timeout() without setting runstate nfs: nfs_kill_super() should call bdi_unregister() after killing super
2009-09-21nfs: initialize the backing_dev_info when creating the serverJens Axboe
NFS may free the server structure without ever having used the bdi, so we either need to flag the bdi as being uninitialized or initialize it up front. This does the latter. This fixes a crash with mounting more than one NFS file system, should people ever need that kind of obscure NFS functionality. Tested-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-21nfs: nfs_kill_super() should call bdi_unregister() after killing superJens Axboe
Otherwise we could be attempting to flush data for a writeback thread and bdi that have already disappeared. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-21perf: Do the big rename: Performance Counters -> Performance EventsIngo Molnar
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: Stephane Eranian <eranian@google.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21Merge branch 'master' of ↵Artem Bityutskiy
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into linux-next Conflicts: fs/ubifs/super.c Merge the upstream tree in order to resolve a conflict with the per-bdi writeback changes from the linux-2.6-block tree.
2009-09-18Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (64 commits) ext4: Update documentation about quota mount options ext4: replace MAX_DEFRAG_SIZE with EXT_MAX_BLOCK ext4: Fix the alloc on close after a truncate hueristic ext4: Add a tracepoint for ext4_alloc_da_blocks() ext4: store EXT4_EXT_MIGRATE in i_state instead of i_flags ext4: limit block allocations for indirect-block files to < 2^32 ext4: Fix different block exchange issue in EXT4_IOC_MOVE_EXT ext4: Add null extent check to ext_get_path ext4: Replace BUG_ON() with ext4_error() in move_extents.c ext4: Replace get_ext_path macro with an inline funciton ext4: Fix include/trace/events/ext4.h to work with Systemtap ext4: Fix initalization of s_flex_groups ext4: Always set dx_node's fake_dirent explicitly. ext4: Fix async commit mode to be safe by using a barrier ext4: Don't update superblock write time when filesystem is read-only ext4: Clarify the locking details in mballoc ext4: check for need init flag in ext4_mb_load_buddy ext4: move ext4_mb_init_group() function earlier in the mballoc.c ext4: Make non-journal fsync work properly ext4: Assure that metadata blocks are written during fsync in no journal mode ...
2009-09-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: add fusectl interface to max_background fuse: limit user-specified values of max background requests fuse: use drop_nlink() instead of direct nlink manipulation fuse: document protocol version negotiation fuse: make the number of max background requests and congestion threshold tunable
2009-09-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: use kernel_sendpage dlm: fix connection close handling dlm: fix double-release of socket in error exit path
2009-09-18Merge branch 'for_linus' of ↵Linus Torvalds
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: ext3: Flush disk caches on fsync when needed ext3: Add locking to ext3_do_update_inode ext3: Fix possible deadlock between ext3_truncate() and ext3_get_blocks() jbd: Annotate transaction start also for journal_restart() jbd: Journal block numbers can ever be only 32-bit use unsigned int for them ext3: Update MAINTAINERS for ext3 and JBD JBD: round commit timer up to avoid uncommitted transaction
2009-09-17Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (39 commits) xfs: includecheck fix for fs/xfs/xfs_iops.c xfs: switch to seq_file xfs: Record new maintainer information xfs: use correct log reservation when handling ENOSPC in xfs_create xfs: xfs_showargs() reports group *and* project quotas enabled xfs: un-static xfs_inobt_lookup xfs: actually enable the swapext compat handler xfs: simplify xfs_trans_iget xfs: merge fsync and O_SYNC handling xfs: speed up free inode search xfs: rationalize xfs_inobt_lookup* xfs: untangle xfs_dialloc xfs: factor out debug checks from xfs_dialloc and xfs_difree xfs: improve xfs_inobt_update prototype xfs: improve xfs_inobt_get_rec prototype xfs: factor out inode initialisation fs/xfs: Correct redundant test xfs: remove XFS_INO64_OFFSET un-static xfs_read_agf xfs: add more statics & drop some unused functions ...
2009-09-17ext4: replace MAX_DEFRAG_SIZE with EXT_MAX_BLOCKEric Sandeen
There's no reason to redefine the maximum allowable offset in an extent-based file just for defrag; EXT_MAX_BLOCK already does this. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-17ext4: Fix the alloc on close after a truncate hueristicTheodore Ts'o
In an attempt to avoid doing an unneeded flush after opening a (previously non-existent) file with O_CREAT|O_TRUNC, the code only triggered the hueristic if ei->disksize was non-zero. Turns out that the VFS doesn't call ->truncate() if the file doesn't exist, and ei->disksize is always zero even if the file previously existed. So remove the test, since it isn't necessary and in fact disabled the hueristic. Thanks to Clemens Eisserer that he was seeing problems with files written using kwrite and eclipse after sudden crashes caused by a buggy Intel video driver. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-17UBIFS: fix debugging dumpArtem Bityutskiy
In 'dbg_check_space_info()' we want to dump current lprops statistics, but actually dump old statistics. Fix this. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-09-16ext4: Add a tracepoint for ext4_alloc_da_blocks()Theodore Ts'o
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-17ext4: store EXT4_EXT_MIGRATE in i_state instead of i_flagsTheodore Ts'o
EXT4_EXT_MIGRATE is only intended to be used for an in-memory flag, and the hex value assigned to it collides with FS_DIRECTIO_FL (which is also stored in i_flags). There's no reason for the EXT4_EXT_MIGRATE bit to be stored in i_flags, so we switch it to use i_state instead. Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext4: limit block allocations for indirect-block files to < 2^32Eric Sandeen
Today, the ext4 allocator will happily allocate blocks past 2^32 for indirect-block files, which results in the block numbers getting truncated, and corruption ensues. This patch limits such allocations to < 2^32, and adds BUG_ONs if we do get blocks larger than that. This should address RH Bug 519471, ext4 bitmap allocator must limit blocks to < 2^32 * ext4_find_goal() is modified to choose a goal < UINT_MAX, so that our starting point is in an acceptable range. * ext4_xattr_block_set() is modified such that the goal block is < UINT_MAX, as above. * ext4_mb_regular_allocator() is modified so that the group search does not continue into groups which are too high * ext4_mb_use_preallocated() has a check that we don't use preallocated space which is too far out * ext4_alloc_blocks() and ext4_xattr_block_set() add some BUG_ONs No attempt has been made to limit inode locations to < 2^32, so we may wind up with blocks far from their inodes. Doing this much already will lead to some odd ENOSPC issues when the "lower 32" gets full, and further restricting inodes could make that even weirder. For high inodes, choosing a goal of the original, % UINT_MAX, may be a bit odd, but then we're in an odd situation anyway, and I don't know of a better heuristic. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext4: Fix different block exchange issue in EXT4_IOC_MOVE_EXTAkira Fujita
If logical block offset of original file which is passed to EXT4_IOC_MOVE_EXT is different from donor file's, a calculation error occurs in ext4_calc_swap_extents(), therefore wrong block is exchanged between original file and donor file. As a result, we hit ext4_error() in check_block_validity(). To detect the logical offset difference in EXT4_IOC_MOVE_EXT, add checks to mext_calc_swap_extents() and handle it as error, since data exchange must be done between the same blocks in EXT4_IOC_MOVE_EXT. Reported-by: Peng Tao <bergwolf@gmail.com> Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext4: Add null extent check to ext_get_pathAkira Fujita
There is the possibility that path structure which is taken by ext4_ext_find_extent() indicates null extents. Because during data block exchanging in ext4_move_extents(), constitution of an extent tree may be changed. As a solution, the patch adds null extent check to ext_get_path(). Reported-by: Peng Tao <bergwolf@gmail.com> Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext4: Replace BUG_ON() with ext4_error() in move_extents.cAkira Fujita
Replace BUG_ON calls with a call to ext4_error() to print an error message if EXT4_IOC_MOVE_EXT failed with some kind of reasons. This will help to debug. Ted pointed this out, thanks. Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext4: Replace get_ext_path macro with an inline funcitonAkira Fujita
Replace get_ext_path macro with an inline function, since this macro looks like a function call but its arguments get modified. Ted pointed this out, thanks. Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-16ext3: Flush disk caches on fsync when neededJan Kara
In case we fsync() a file and inode is not dirty, we don't force a transaction to disk and hence don't flush disk caches. Thus file data could be just in disk caches and not on persistent storage. Fix the problem by flushing disk caches if we didn't force a transaction commit. Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16ext3: Add locking to ext3_do_update_inodeChris Mason
I've been struggling with this off and on while I've been testing the data=guarded work. The symptom is corrupted orphan lists and inodes with the wrong i_size stored on disk. I was convinced the data=guarded code was just missing a call to ext3_mark_inode_dirty, but tracing showed the i_disksize I was sending to ext3_mark_inode_dirty wasn't actually making it to the drive. ext3_mark_inode_dirty can be called without locks held (atime updates and a few others), so the data=guarded code uses locks while updating the in-memory inode, and then calls ext3_mark_inode_dirty without any locks held. But, ext3_mark_inode_dirty has no internal locking to make sure that only one CPU is updating the buffer head at a time. Generally this works out ok because everyone that changes the inode then calls ext3_mark_inode_dirty themselves. Even though it races, eventually someone updates the buffer heads and things move on. But there is still a risk of the wrong values getting in, and the data=guarded code seems to hit the race very often. Since everyone that changes the inode also logs it, it should be possible to fix this with some memory barriers. I'll leave that as an exercise to the reader and lock the buffer head instead. It it probably a good idea to have a different patch series for lockless bit flipping on the ext3 i_state field. ext3_do_update_inode &= clears EXT3_STATE_NEW without any locks held. Signed-off-by: Chris Mason <chris.mason@oracle.com> Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16ext3: Fix possible deadlock between ext3_truncate() and ext3_get_blocks()Jan Kara
During truncate we are sometimes forced to start a new transaction as the amount of blocks to be journaled is both quite large and hard to predict. So far we restarted a transaction while holding truncate_mutex and that violates lock ordering because truncate_mutex ranks below transaction start (and it can lead to a real deadlock with ext3_get_blocks() allocating new blocks from ext3_writepage()). Luckily, the problem is easy to fix: We just drop the truncate_mutex before restarting the transaction and acquire it afterwards. We are safe to do this as by the time ext3_truncate() is called, all the page cache for the truncated part of the file is dropped and so writepage() cannot come and allocate new blocks in the part of the file we are truncating. The rest of writers is stopped by us holding i_mutex. Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16jbd: Annotate transaction start also for journal_restart()Jan Kara
lockdep annotation for a transaction start has been at the end of journal_start(). But a transaction is also started from journal_restart(). Move the lockdep annotation to start_this_handle() which covers both cases. Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16jbd: Journal block numbers can ever be only 32-bit use unsigned int for themJan Kara
It does not make sense to store block number for journal as unsigned long since they can be only 32-bit (because of on-disk format limitation). So change in-memory structures and variables to use unsigned int instead. Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16JBD: round commit timer up to avoid uncommitted transactionAndreas Dilger
Fix jiffie rounding in jbd commit timer setup code. Rounding down could cause the timer to be fired before the corresponding transaction has expired. That transaction can stay not committed forever if no new transaction is created or explicit sync/umount happens. Signed-off-by: Andreas Dilger <adilger@sun.com> Signed-off-by: Jan Kara <jack@suse.cz>
2009-09-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev debugfs: Modify default debugfs directory for debugging pktcdvd. debugfs: Modified default dir of debugfs for debugging UHCI. debugfs: Change debugfs directory of IWMC3200 debugfs: Change debuhgfs directory of trace-events-sample.h debugfs: Fix mount directory of debugfs by default in events.txt hpilo: add poll f_op hpilo: add interrupt handler hpilo: staging for interrupt handling driver core: platform_device_add_data(): use kmemdup() Driver core: Add support for compatibility classes uio: add generic driver for PCI 2.3 devices driver-core: move dma-coherent.c from kernel to driver/base mem_class: fix bug mem_class: use minor as index instead of searching the array driver model: constify attribute groups UIO: remove 'default n' from Kconfig Driver core: Add accessor for device platform data Driver core: move dev_get/set_drvdata to drivers/base/dd.c Driver core: add new device to bus's list before probing
2009-09-16writeback: fix possible bdi writeback refcounting problemNick Piggin
wb_clear_pending AFAIKS should not be called after the item has been put on the list, except by the worker threads. It could lead to the situation where the refcount is decremented below 0 and cause lots of problems. Presumably the !wb_has_dirty_io case is not a common one, so it can be discovered when the thread wakes up to check? Also add a comment in bdi_work_clear. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: Fix bdi use after free in wb_work_complete()Nick Piggin
By the time bdi_work_on_stack gets evaluated again in bdi_work_free, it can already have been deallocated and used for something else in the !on stack case, giving a false positive in this test and causing corruption. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: improve scalability of bdi writeback work queuesNick Piggin
If you're going to do an atomic RMW on each list entry, there's not much point in all the RCU complexities of the list walking. This is only going to help the multi-thread case I guess, but it doesn't hurt to do now. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: remove smp_mb(), it's not needed with list_add_tail_rcu()Nick Piggin
list_add_tail_rcu contains required barriers. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: use schedule_timeout_interruptible()Jens Axboe
Gets rid of a manual set_current_state(). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: add comments to bdi_work structureJens Axboe
And document its retriever, get_next_work_item(). Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: separate starting of sync vs opportunistic writebackJens Axboe
bdi_start_writeback() is currently split into two paths, one for WB_SYNC_NONE and one for WB_SYNC_ALL. Add bdi_sync_writeback() for WB_SYNC_ALL writeback and let bdi_start_writeback() handle only WB_SYNC_NONE. Push down the writeback_control allocation and only accept the parameters that make sense for each function. This cleans up the API considerably. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: inline allocation failure handling in bdi_alloc_queue_work()Jens Axboe
This gets rid of work == NULL in bdi_queue_work() and puts the OOM handling where it belongs. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: use RCU to protect bdi_listJens Axboe
Now that bdi_writeback_all() no longer handles integrity writeback, it doesn't have to block anymore. This means that we can switch bdi_list reader side protection to RCU. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: only use bdi_writeback_all() for WB_SYNC_NONE writeoutJens Axboe
Data integrity writeback must use bdi_start_writeback() and ensure that wbc->sb and wbc->bdi are set. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16fs: Assign bdi in super_blockJens Axboe
We do this automatically in get_sb_bdev() from the set_bdev_super() callback. Filesystems that have their own private backing_dev_info must assign that in ->fill_super(). Note that ->s_bdi assignment is required for proper writeback! Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: make wb_writeback() take an argument structureJens Axboe
We need to be able to pass in range_cyclic as well, so instead of growing yet another argument, split the arguments into a struct wb_writeback_args structure that we can use internally. Also makes it easier to just copy all members to an on-stack struct, since we can't access work after clearing the pending bit. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: merely wakeup flusher thread if work allocation fails for ↵Christoph Hellwig
WB_SYNC_NONE Since it's an opportunistic writeback and not a data integrity action, don't punt to blocking writeback. Just wakeup the thread and it will flush old data. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16writeback: get rid of wbc->for_writepagesJens Axboe
It's only set, it's never checked. Kill it. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16fs: remove bdev->bd_inode_backing_dev_infoJens Axboe
It has been unused since it was introduced in: commit 520808bf20e90fdbdb320264ba7dd5cf9d47dcac Author: Andrew Morton <akpm@osdl.org> Date: Fri May 21 00:46:17 2004 -0700 [PATCH] block device layer: separate backing_dev_info infrastructure So lets just kill it. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16fuse: add fusectl interface to max_backgroundCsaba Henk
Make the max_background and congestion_threshold parameters of a FUSE mount tunable at runtime by adding the respective knobs to its directory within the fusectl filesystem. Signed-off-by: Csaba Henk <csaba@gluster.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2009-09-16fuse: limit user-specified values of max background requestsCsaba Henk
An untrusted user could DoS the system if s/he were allowed to accumulate an arbitrary number of pending background requests by setting the above limits to extremely high values in INIT. This patch excludes this possibility by imposing global upper limits on the possible values of per-mount "max background requests" and "congestion threshold" parameters for unprivileged FUSE filesystems. These global limits are implemented as module parameters. Signed-off-by: Csaba Henk <csaba@gluster.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2009-09-16fuse: use drop_nlink() instead of direct nlink manipulationCsaba Henk
drop_nlink() is the API function to decrease the link count of an inode. However, at a place the control filesystem used the decrement operator on i_nlink directly. Fix this. Cc: Anand Avati <avati@gluster.com> Signed-off-by: Csaba Henk <csaba@gluster.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2009-09-15Merge branch 'master' of git://oss.sgi.com/xfs/xfs into for-linusAlex Elder
Conflicts: fs/xfs/linux-2.6/xfs_lrw.c
2009-09-15xfs: includecheck fix for fs/xfs/xfs_iops.cJaswinder Singh Rajput
fix the following 'make includecheck' warning: fs/xfs/linux-2.6/xfs_iops.c: xfs_acl.h is included more than once. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Reviewed-by: Alex Elder <aelder@sgi.com> Signed-off-by: Alex Elder <aelder@sgi.com>
2009-09-15xfs: switch to seq_fileAlexey Dobriyan
create_proc_read_entry() is getting deprecated. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Alex Elder <aelder@sgi.com> Signed-off-by: Alex Elder <aelder@sgi.com>
2009-09-15driver model: constify attribute groupsDavid Brownell
Let attribute group vectors be declared "const". We'd like to let most attribute metadata live in read-only sections... this is a start. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>