- 14 2月, 2008 1 次提交
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由 Marcin Slusarz 提交于
remove beX_add functions and replace all uses with beX_add_cpu Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: NDave Chinner <dgc@sgi.com> Cc: Timothy Shimmin <tes@sgi.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 07 2月, 2008 39 次提交
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由 Lachlan McIlroy 提交于
SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30459a Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NDenis Cheng <crquan@gmail.com>
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由 David Chinner 提交于
When xfs_file_readdir() exactly fills a buffer, it can move it's index past the end of the buffer and dereference it even though the result of the dereference is never used. On some platforms this causes an oops. SGI-PV: 976923 SGI-Modid: xfs-linux-melb:xfs-kern:30458a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
The only caller (xfs_fs_fill_super) can simplify call igrab on the root inode. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30393a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
To get the read-only bind mounts in -mm to work correctly with XFS we need to call the drop_nlink and inc_nlink helpers to monitor the link count. Add calls to these to xfs_bumplink and xfs_droplink and stop copying over di_nlink to i_nlink in xfs_validate_fields and vn_revalidate. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30392a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
The VFS doesn't use i_blocks, it's only used by generic_fillattr and the generic quota code which XFS doesn't use. In XFS there is one use to check whether we have an inline or out of line sumlink, but we can replace that with a check of the XFS_IFINLINE inode flag. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30391a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Checking the entire AIL on every insert and remove is prohibitively expensive - the sustained sequntial create rate on a single disk drops from about 1800/s to 60/s because of this checking resulting in the xfslogd becoming cpu bound. By default on debug builds, only check the next and previous entries in the list to ensure they are ordered correctly. If you really want, define XFS_TRANS_DEBUG to use the old behaviour. SGI-PV: 972759 SGI-Modid: xfs-linux-melb:xfs-kern:30372a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
When many hundreds to thousands of threads all try to do simultaneous transactions and the log is in a tail-pushing situation (i.e. full), we can get multiple threads walking the AIL list and contending on the AIL lock. The AIL push is, in effect, a simple I/O dispatch algorithm complicated by the ordering constraints placed on it by the transaction subsystem. It really does not need multiple threads to push on it - even when only a single CPU is pushing the AIL, it can push the I/O out far faster that pretty much any disk subsystem can handle. So, to avoid contention problems stemming from multiple list walkers, move the list walk off into another thread and simply provide a "target" to push to. When a thread requires a push, it sets the target and wakes the push thread, then goes to sleep waiting for the required amount of space to become available in the log. This mechanism should also be a lot fairer under heavy load as the waiters will queue in arrival order, rather than queuing in "who completed a push first" order. Also, by moving the pushing to a separate thread we can do more effectively overload detection and prevention as we can keep context from loop iteration to loop iteration. That is, we can push only part of the list each loop and not have to loop back to the start of the list every time we run. This should also help by reducing the number of items we try to lock and/or push items that we cannot move. Note that this patch is not intended to solve the inefficiencies in the AIL structure and the associated issues with extremely large list contents. That needs to be addresses separately; parallel access would cause problems to any new structure as well, so I'm only aiming to isolate the structure from unbounded parallelism here. SGI-PV: 972759 SGI-Modid: xfs-linux-melb:xfs-kern:30371a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
Now that all direct caller of xfs_iaccess are gone we can kill xfs_iaccess and xfs_access and just use generic_permission with a check_acl callback. This is required for the per-mount read-only patchset in -mm to work properly with XFS. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30370a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
xfs_swapext should simplify check if we have a writeable file descriptor instead of re-checking the permissions using xfs_iaccess. Add an additional check to refuse O_APPEND file descriptors because swapext is not an append-only write operation. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30369a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
- stop using vnodes - use proper multiple label goto unwinding - give the struct file * variables saner names SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30366a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
Both callers of xfs_change_file_space alreaedy do the file->f_mode & FMODE_WRITE check to ensure we have a file descriptor that has been opened for write mode, so there is no need to re-check that with xfs_iaccess. Especially as the later might wrongly deny it for corner cases like file descriptor passing through unix domain sockets. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30365a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Lachlan McIlroy 提交于
A problem was reported where a system panicked in log recovery due to a corrupt log record. The cause of the corruption is not known but this change will at least prevent a crash for this specific scenario. Log recovery definitely needs some more work in this area. SGI-PV: 974151 SGI-Modid: xfs-linux-melb:xfs-kern:30318a Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org>
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由 Christoph Hellwig 提交于
- merge xfs_fid2 into it's only caller xfs_dm_inode_to_fh. - remove xfs_vget and opencode it in the two callers, simplifying both of them by avoiding the awkward calling convetion. - assign directly to the dm_fid_t members in various places in the dmapi code instead of casting them to xfs_fid_t first (which is identical to dm_fid_t) SGI-PV: 974747 SGI-Modid: xfs-linux-melb:xfs-kern:30258a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NVlad Apostolov <vapo@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
xfs_lowbit64 was broken on 32 bit platforms in a recent cleanup of the xfs bitops. Fix it back up again. SGI-PV: 974005 SGI-Modid: xfs-linux-melb:xfs-kern:30202a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
Currently XFS_IFORK_* and XFS_DFORK* are implemented by means of XFS_CFORK* macros. But given that XFS_IFORK_* operates on an xfs_inode that embedds and xfs_icdinode_core and XFS_DFORK_* operates on an xfs_dinode that embedds a xfs_dinode_core one will have to do endian swapping while the other doesn't. Instead of having the current mess with the CFORK macros that have byteswapping and non-byteswapping version (which are inconsistantly named while we're at it) just define each family of the macros to stand by itself and simplify the whole matter. A few direct references to the CFORK variants were cleaned up to use IFORK or DFORK to make this possible. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30163a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NTim Shimmin <tes@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Christoph Hellwig 提交于
There is no need to lock any page in xfs_buf.c because we operate on our own address_space and all locking is covered by the buffer semaphore. If we ever switch back to main blockdeive address_space as suggested e.g. for fsblock with a similar scheme the locking will have to be totally revised anyway because the current scheme is neither correct nor coherent with itself. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30156a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Robert P. J. Day 提交于
SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30098a Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Tim Shimmin 提交于
The BPCSHIFT based macros, btoc*, ctob*, offtoc* and ctooff are either not used or don't need to be used. The NDPP, NDPP, NBBY macros don't need to be used but instead are replaced directly by PAGE_SIZE and PAGE_CACHE_SIZE where appropriate. Initial patch and motivation from Nicolas Kaiser. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30096a Signed-off-by: NTim Shimmin <tes@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Niv Sardi 提交于
This assert is bogus. We can have a forced shutdown occur between the check for the XLOG_FORCED_SHUTDOWN and the ASSERT. Also, the logging system shouldn't care about the state of XFS_FORCED_SHUTDOWN, it should only check XLOG_FORCED_SHUTDOWN. The logging system has it's own forced shutdown flag so, for the case of a forced shutdown that's not due to a logging error, we can flush the log. SGI-PV: 972985 SGI-Modid: xfs-linux-melb:xfs-kern:30029a Signed-off-by: NNiv Sardi <xaiki@sgi.com> Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Eric Sandeen 提交于
Use XFS_IS_REALTIME_INODE in more places, and #define it to 0 if CONFIG_XFS_RT is off. This should be safe because mount checks in xfs_rtmount_init: so if we get mounted w/o CONFIG_XFS_RT, no realtime inodes should be encountered after that. Defining XFS_IS_REALTIME_INODE to 0 saves a bit of stack space, presumeably gcc can optimize around the various "if (0)" type checks: xfs_alloc_file_space -8 xfs_bmap_adjacent -16 xfs_bmapi -8 xfs_bmap_rtalloc -16 xfs_bunmapi -28 xfs_free_file_space -64 xfs_imap +8 <-- ? hmm. xfs_iomap_write_direct -12 xfs_qm_dqusage_adjust -4 xfs_qm_vop_chown_reserve -4 SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30014a Signed-off-by: NEric Sandeen <sandeen@sandeen.net> Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Mount option parsing is platform specific. Move it out of core code into the platform specific superblock operation file. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30012a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Implement the new generic callout for file preallocation. Atomically change the file size if requested. SGI-PV: 972756 SGI-Modid: xfs-linux-melb:xfs-kern:30009a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
The log force added in xfs_iget_core() has been a performance issue since it was introduced for tight loops that allocate then unlink a single file. under heavy writeback, this can introduce unnecessary latency due tothe log I/o getting stuck behind bulk data writes. Fix this latency problem by avoinding the need for the log force by moving the place we mark linux inode dirty to the transaction commit rather than on transaction completion. This also closes a potential hole in the sync code where a linux inode is not dirty between the time it is modified and the time the log buffer has been written to disk. SGI-PV: 972753 SGI-Modid: xfs-linux-melb:xfs-kern:30007a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Prevent transaction overrun in xfs_iomap_write_allocate() if we race with a truncate that overlaps the delalloc range we were planning to allocate. If we race, we may allocate into a hole and that requires block allocation. At this point in time we don't have a reservation for block allocation (apart from metadata blocks) and so allocating into a hole rather than a delalloc region results in overflowing the transaction block reservation. Fix it by only allowing a single extent to be allocated at a time. SGI-PV: 972757 SGI-Modid: xfs-linux-melb:xfs-kern:30005a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
There are several mount options that don't show up in /proc/mounts. Add them in and clean up the showargs code at the same time. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30004a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Sparse trips over the locking order in xlog_recover_do_efd_trans() when xfs_trans_delete_ail() drops the ail lock. Because the unlock is conditional, we need to either annotate with a "fake unlock" or change the structure of the code so sparse thinks the function always unlocks. Reordering the code makes it simpler, so do that. SGI-PV: 972755 SGI-Modid: xfs-linux-melb:xfs-kern:30003a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
These are mostly locking annotations, marking things static, casts where needed and declaring stuff in header files. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30002a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 David Chinner 提交于
Patch inspired by Andi Kleen. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30000a Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Vlad Apostolov 提交于
We need xfs_bulkstat() to report inode stat for inodes with link count zero but reference count non zero. The fix here: http://oss.sgi.com/archives/xfs/2007-09/msg00266.html changed this behavior and made xfs_bulkstat() to filter all unlinked inodes including those that are not destroyed yet but held by reference. The attached patch returns back to the original behavior by marking the on-disk inode buffer "dirty" when di_mode is cleared (at that time both inode link and reference counter are zero). SGI-PV: 972004 SGI-Modid: xfs-linux-melb:xfs-kern:29914a Signed-off-by: NVlad Apostolov <vapo@sgi.com> Signed-off-by: NDavid Chinner <dgc@sgi.com> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Lachlan McIlroy 提交于
SGI-PV: 971596 SGI-Modid: xfs-linux-melb:xfs-kern:29902a Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
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由 Eric Sandeen 提交于
XFS_IOC_GETVERSION, XFS_IOC_GETXFLAGS and XFS_IOC_SETXFLAGS all take a "long" which changes size between 32 and 64 bit platforms. So, the ioctl cmds that come in from a 32-bit app aren't as expected, for example on GETXFLAGS, unknown cmd fd(3) cmd(80046601){t:'f';sz:4} due to the size mismatch. So, use instead the 32-bit version of the commands for compat ioctls, and other than that it doesn't take any more manipulation. Also, for both native and compat versions, just define them to the values as defined in fs.h SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29849a Signed-off-by: NEric Sandeen <sandeen@sandeen.net> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Eric Sandeen 提交于
No need for xfs to have its own hex dumping routine now that the kernel has one. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29847a Signed-off-by: NEric Sandeen <sandeen@sandeen.net> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
This macro is unused an all other acros in this family operate on native types, so we most likely won't grow a user either. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29846a Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
There is no need to lock any page in xfs_buf.c because we operate on our own address_space and all locking is covered by the buffer semaphore. If we ever switch back to main blockdeive address_space as suggested e.g. for fsblock with a similar scheme the locking will have to be totally revised anyway because the current scheme is neither correct nor coherent with itself. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29845a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Eric Sandeen 提交于
Refactoring xfs_mountfs() to call sub-functions for logical chunks can help save a bit of stack, and can make it easier to read this long function. The mount path is one of the longest common callchains, easily getting to within a few bytes of the end of a 4k stack when over lvm, quotas are enabled, and quotacheck must be done. With this change on top of the other stack-related changes I've sent, I can get xfs to survive a normal xfsqa run on 4k stacks over lvm. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29834a Signed-off-by: NEric Sandeen <sandeen@sandeen.net> Signed-off-by: NDonald Douwsma <donaldd@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
Mostly trivial conversion with one exceptions: h_num_logops was kept in native endian previously and only converted to big endian in xlog_sync, but we always keep it big endian now. With todays cpus fast byteswap instructions that's not an issue but the new variant keeps the code clean and maintainable. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29821a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
- the various assign lsn macros are replaced by a single inline, xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except for a more sane calling convention. ASSIGN_LSN_DISK is replaced by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same, except we pass the cycle and block arguments explicitly instead of a log paramter. The latter two variants only had 2, respectively one user anyway. - the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the same calling conventions. - GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away the unused arch argument. Instead of conditional defintions depending on host endianess we now do an unconditional swap and shift then, which generates equal code. - the unused XLOG_SET macro is removed. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29820a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
- the various assign lsn macros are replaced by a single inline, xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except for a more sane calling convention. ASSIGN_LSN_DISK is replaced by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same, except we pass the cycle and block arguments explicitly instead of a log paramter. The latter two variants only had 2, respectively one user anyway. - the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the same calling conventions. - GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away the unused arch argument. Instead of conditional defintions depending on host endianess we now do an unconditional swap and shift then, which generates equal code. - the unused XLOG_SET macro is removed. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29819a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NLachlan McIlroy <lachlan@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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由 Christoph Hellwig 提交于
No need to have a wrapper just two call two more functions. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29816a Signed-off-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NDonald Douwsma <donaldd@sgi.com> Signed-off-by: NTim Shimmin <tes@sgi.com>
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