- 21 9月, 2009 2 次提交
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由 Anand Gadiyar 提交于
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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由 Anand Gadiyar 提交于
trivial: fix typo "for for" in multiple files Signed-off-by: NAnand Gadiyar <gadiyar@ti.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 17 9月, 2009 9 次提交
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由 Eric Sandeen 提交于
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: NEric Sandeen <sandeen@redhat.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Theodore Ts'o 提交于
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: N"Theodore Ts'o" <tytso@mit.edu>
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由 Theodore Ts'o 提交于
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Theodore Ts'o 提交于
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: N"Theodore Ts'o" <tytso@mit.edu>
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由 Eric Sandeen 提交于
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: NEric Sandeen <sandeen@redhat.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Akira Fujita 提交于
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: NPeng Tao <bergwolf@gmail.com> Signed-off-by: NAkira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Akira Fujita 提交于
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: NPeng Tao <bergwolf@gmail.com> Signed-off-by: NAkira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Akira Fujita 提交于
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: NAkira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Akira Fujita 提交于
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: NAkira Fujita <a-fujita@rs.jp.nec.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 16 9月, 2009 27 次提交
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由 Jan Kara 提交于
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: NJan Kara <jack@suse.cz>
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由 Chris Mason 提交于
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: NChris Mason <chris.mason@oracle.com> Signed-off-by: NJan Kara <jack@suse.cz>
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由 Jan Kara 提交于
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: NJan Kara <jack@suse.cz>
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由 Jan Kara 提交于
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: NJan Kara <jack@suse.cz>
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由 Jan Kara 提交于
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: NJan Kara <jack@suse.cz>
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由 Andreas Dilger 提交于
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: NAndreas Dilger <adilger@sun.com> Signed-off-by: NJan Kara <jack@suse.cz>
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由 Nick Piggin 提交于
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: NNick Piggin <npiggin@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Nick Piggin 提交于
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: NNick Piggin <npiggin@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Nick Piggin 提交于
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: NNick Piggin <npiggin@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Nick Piggin 提交于
list_add_tail_rcu contains required barriers. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Gets rid of a manual set_current_state(). Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
And document its retriever, get_next_work_item(). Acked-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
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: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
This gets rid of work == NULL in bdi_queue_work() and puts the OOM handling where it belongs. Acked-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
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: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Data integrity writeback must use bdi_start_writeback() and ensure that wbc->sb and wbc->bdi are set. Acked-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
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: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
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: NJens Axboe <jens.axboe@oracle.com>
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由 Christoph Hellwig 提交于
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: NJan Kara <jack@suse.cz> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
It's only set, it's never checked. Kill it. Acked-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
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: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Csaba Henk 提交于
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: NCsaba Henk <csaba@gluster.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Csaba Henk 提交于
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: NCsaba Henk <csaba@gluster.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Csaba Henk 提交于
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: NCsaba Henk <csaba@gluster.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Jaswinder Singh Rajput 提交于
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: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Reviewed-by: NAlex Elder <aelder@sgi.com> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 Alexey Dobriyan 提交于
create_proc_read_entry() is getting deprecated. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Reviewed-by: NAlex Elder <aelder@sgi.com> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 David Brownell 提交于
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: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 15 9月, 2009 2 次提交
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由 Theodore Ts'o 提交于
Using relative pathnames in #include statements interacts badly with SystemTap, since the fs/ext4/*.h header files are not packaged up as part of a distribution kernel's header files. Since systemtap doesn't use TP_fast_assign(), we can use a blind structure definition and then make sure the needed header files are defined before the ext4 source files #include the trace/events/ext4.h header file. https://bugzilla.redhat.com/show_bug.cgi?id=512478Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Jan Kara 提交于
When we close a file, we remove preallocated blocks from it. But this truncation was not protected by i_mutex and thus it could have raced with a write through a different fd and cause crashes or even filesystem corruption. Signed-off-by: NJan Kara <jack@suse.cz>
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