- 13 Aug, 2008 40 commits
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Lachlan McIlroy authored
Use KM_NOFS to prevent recursion back into the filesystem which can cause deadlocks. In the case of xfs_iread() we hold the lock on the inode cluster buffer while allocating memory for the trace buffers. If we recurse back into XFS to flush data that may require a transaction to allocate extents which needs log space. This can deadlock with the xfsaild thread which can't push the tail of the log because it is trying to get the inode cluster buffer lock. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31838a Signed-off-by:
Lachlan McIlroy <lachlan@sgi.com> Signed-off-by:
David Chinner <david@fromorbit.com>
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Christoph Hellwig authored
Use KM_MAYFAIL for the m_perag allocation, we can deal with the error easily and blocking forever during mount is not a good idea either. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31837a Signed-off-by:
Christoph Hellwig <hch@infradead.org> Signed-off-by:
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Christoph Hellwig authored
xfs_mount_free mostly frees the perag data, which is something that is duplicated in the mount error path. Move the XFS_QM_DONE call to the caller and remove the useless mutex_destroy/spinlock_destroy calls so that we can re-use it for the mount error path. Also rename it to xfs_free_perag to reflect what it does. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31836a Signed-off-by:
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Christoph Hellwig authored
xfs_readsb is called before xfs_mount so xfs_freesb should be called after xfs_unmountfs, too. This means it now happens after a few things during the of xfs_unmount which all have nothing to do with the superblock. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31835a Signed-off-by:
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Christoph Hellwig authored
xfs_unmounts can't and shouldn't return errors so declare it as returning void. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31833a Signed-off-by:
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Christoph Hellwig authored
Remove all the useless flags and code keyed off it in xfs_mountfs. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31831a Signed-off-by:
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Christoph Hellwig authored
The root inode is allocated in xfs_mountfs so it should be release in xfs_unmountfs. For the unmount case that means we do it after the the xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE) in the forced shutdown case and the dmapi unmount event. Note that both reference the rip variable which might be freed by that time in case inode flushing has kicked in, so strictly speaking this might count as a bug fix SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31830a Signed-off-by:
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Christoph Hellwig authored
xfs_ichtime updates the xfs_inode and Linux inode timestamps just fine, no need to call file_update_time and then copy the values over to the XFS inode. The only additional thing in file_update_time are checks not applicable to the write path. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31829a Signed-off-by:
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Christoph Hellwig authored
Port a little optmization from file_update_time to xfs_ichgtime, and only update the timestamp and mark the inode dirty if the timestamp actually changes in the timer tick resultion supported by the running kernel. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31827a Signed-off-by:
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Christoph Hellwig authored
In xfs_ialloc we just want to set all timestamps to the current time. We don't need to mark the inode dirty like xfs_ichgtime does, and we don't need nor want the opimizations in xfs_ichgtime that I will introduce in the next patch. So just opencode the timestamp update in xfs_ialloc, and remove the new unused XFS_ICHGTIME_ACC case in xfs_ichgtime. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31825a Signed-off-by:
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David Chinner authored
Now that all users of the sema_t are gone from XFS we can finally kill it. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31823a Signed-off-by:
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David Chinner authored
Use the new completion flush code to implement the dquot flush lock. Removes one of the final users of semaphores in the XFS code base. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31822a Signed-off-by:
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David Chinner authored
Use the new completion flush code to implement the inode flush lock. Removes one of the final users of semaphores in the XFS code base. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31817a Signed-off-by:
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David Chinner authored
XFS object flushing doesn't quite match existing completion semantics. It mixed exclusive access with completion. That is, we need to mark an object as being flushed before flushing it to disk, and then block any other attempt to flush it until the completion occurs. We do this but adding an extra count to the completion before we start using them. However, we still need to determine if there is a completion in progress, and allow no-blocking attempts fo completions to decrement the count. To do this we introduce: int try_wait_for_completion(struct completion *x) returns a failure status if done == 0, otherwise decrements done to zero and returns a "started" status. This is provided to allow counted completions to begin safely while holding object locks in inverted order. int completion_done(struct completion *x) returns 1 if there is no waiter, 0 if there is a waiter (i.e. a completion in progress). This replaces the use of semaphores for providing this exclusion and completion mechanism. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31816a Signed-off-by:
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David Chinner authored
The xfs_buf_t b_iodonesema is really just a semaphore that wants to be a completion. Change it to a completion and remove the last user of the sema_t from XFS. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31815a Signed-off-by:
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David Chinner authored
A lot of code has been converted away from semaphores, but there are still comments that reference semaphore behaviour. The log code is the worst offender. Update the comments to reflect what the code really does now. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31814a Signed-off-by:
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Harvey Harrison authored
SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31813a Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Lachlan McIlroy authored
SGI-PV: 957103 SGI-Modid: xfs-linux-melb:xfs-kern:31804a Signed-off-by: -
Christoph Hellwig authored
The alloc and inobt btree use the same agbp/agno pair in the btree_cur union. Make them use the same bc_private.a union member so that code for these two short form btree implementations can be shared. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31788a Signed-off-by:
Tim Shimmin <tes@sgi.com> Signed-off-by:
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Christoph Hellwig authored
Remove unneeded xfs_btree_get_block forward declaration. Move xfs_btree_firstrec next to xfs_btree_lastrec. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31787a Signed-off-by:
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Christoph Hellwig authored
Sanitize setting up the Linux indode. Setting up the xfs_inode <-> inode link is opencoded in xfs_iget_core now because that's the only place it needs to be done, xfs_initialize_vnode is renamed to xfs_setup_inode and loses all superflous paramaters. The check for I_NEW is removed because it always is true and the di_mode check moves into xfs_iget_core because it's only needed there. xfs_set_inodeops and xfs_revalidate_inode are merged into xfs_setup_inode and the whole things is moved into xfs_iops.c where it belongs. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31782a Signed-off-by:
Niv Sardi <xaiki@sgi.com> Signed-off-by:
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Christoph Hellwig authored
All remaining bhv_vnode_t instance are in code that's more or less Linux specific. (Well, for xfs_acl.c that could be argued, but that code is on the removal list, too). So just do an s/bhv_vnode_t/struct inode/ over the whole tree. We can clean up variable naming and some useless helpers later. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31781a Signed-off-by:
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Christoph Hellwig authored
In various places we can just move a VFS_I call into the argument list of called functions/macros instead of having a local bhv_vnode_t. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31776a Signed-off-by:
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Christoph Hellwig authored
When multiple inodes are locked in XFS it happens in order of the inode number, with the everything but the first inode trylocked if any of the previous inodes is in the AIL. Except for the sorting of the inodes this logic is implemented in xfs_lock_inodes, but also partially duplicated in xfs_lock_dir_and_entry in a particularly stupid way adds a lock roundtrip if the inode ordering is not optimal. This patch adds a new helper xfs_lock_two_inodes that takes two inodes and locks them in the most optimal way according to the above locking protocol and uses it for all places that want to lock two inodes. The only caller of xfs_lock_inodes is xfs_rename which might lock up to four inodes. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31772a Signed-off-by:
Donald Douwsma <donaldd@sgi.com> Signed-off-by:
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Christoph Hellwig authored
All the error injection is already enabled through ifdef DEBUG, so kill the never set second cpp symbol to activate it without the rest of the debugging infrastructure. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31771a Signed-off-by:
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Christoph Hellwig authored
Now that all direct calls to VN_HOLD/VN_RELE are gone we can implement IHOLD/IRELE directly. For the IHOLD case also replace igrab with a direct increment of i_count because we are guaranteed to already have a live and referenced inode by the VFS. Also remove the vn_hold statistic because it's been rather meaningless for some time with most references done by other callers. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31764a Signed-off-by:
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Christoph Hellwig authored
Use IHOLD(ip) instead of VN_HOLD(VFS_I(ip)). SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31765a Signed-off-by:
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Christoph Hellwig authored
All the ACL routines are called from inode operations which are guaranteed to have a referenced inode by the VFS, so there's no need for the ACL code to grab another temporary one. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31763a Signed-off-by:
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Christoph Hellwig authored
bhv_vnode_t is just a typedef for struct inode, so there's no need for a helper to convert between the two. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31761a Signed-off-by:
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Christoph Hellwig authored
bhv_vnode_t is just a typedef for struct inode, so there's no need for a helper to convert between the two. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31760a Signed-off-by:
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Eric Sandeen authored
SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31758a Signed-off-by:
Eric Sandeen <sandeen@sandeen.net> Signed-off-by:
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Eric Sandeen authored
Looks like somehow xfs got missed in the conversion that took place in e231c2ee, "Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) <http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit diff;h=e231c2ee>" SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31757a Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Eric Sandeen authored
Thanks to hch's endian work, INT_GET etc are no longer used, and may as well be removed. INT_SET is still used in the acl code, though. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31756a Signed-off-by:
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Niv Sardi authored
Move it from the attr code to the transaction code and make the attr code call the new function. We rolltrans is really usefull whenever we want to use rolling transaction, should be generic, it isn't dependent on any part of the attr code anyway. We use this excuse to change all the: if ((error = xfs_attr_rolltrans())) calls into: error = xfs_trans_roll(); if (error) SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31729a Signed-off-by:
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Christoph Hellwig authored
Add a helper to free the m_fsname/m_rtname/m_logname allocations and use it properly for all mount failure cases. Also switch the allocations for these to kstrdup while we're at it. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31728a Signed-off-by:
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Niv Sardi authored
We will need that to be able to calculate the size of log we need for a specific attr (for Create+EA). The local flag is needed so that we can fail if we run into ENOSPC when trying to alloc blocks. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31727a Signed-off-by:
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David Chinner authored
If we allow incore extent tree allocations to recurse into the filesystem under memory pressure, new delayed allocations through xfs_iomap_write_delay() can deadlock on themselves if memory reclaim tries to write back dirty pages from that inode. It will deadlock in xfs_iomap_write_allocate() trying to take the ilock we already hold. This can also show up as complex ABBA deadlocks when multiple threads are triggering memory reclaim when trying to allocate extents. The main cause of this is the fact that delayed allocation is not done in a transaction, so KM_NOFS is not automatically added to the allocations to prevent this recursion. Mark all allocations done for the incore inode extent tree as KM_NOFS to ensure they never recurse back into the filesystem. Version 2: o KM_NOFS implies KM_SLEEP, so just use KM_NOFS SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31726a Signed-off-by:
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David Chinner authored
xfs_vtoi() is redundant and only unsed in small sections of code. Replace them with widely used XFS_I() inline and kill xfs_vtoi(). SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31725a Signed-off-by:
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David Chinner authored
Replace XFS_ITOV() with the new VFS_I() inline. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31724a Signed-off-by:
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David Chinner authored
Replace XFS_ITOV_NULL() with the new VFS_I() inline. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31722a Signed-off-by:
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