- 06 10月, 2016 2 次提交
-
-
由 Darrick J. Wong 提交于
After the write component of a copy-write operation finishes, clean up the bookkeeping left behind. On error, we simply free the new blocks and pass the error up. If we succeed, however, then we must remove the old data fork mapping and move the cow fork mapping to the data fork. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> [hch: Call the CoW failure function during xfs_cancel_ioend] Signed-off-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Create a helper method to remove extents from the CoW fork without any of the side effects (rmapbt/bmbt updates) of the regular extent deletion routine. We'll eventually use this to clear out the CoW fork during ioend processing. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
- 05 10月, 2016 15 次提交
-
-
由 Darrick J. Wong 提交于
Modify the writepage handler to find and convert pending delalloc extents to real allocations. Furthermore, when we're doing non-cow writes to a part of a file that already has a CoW reservation (the cowextsz hint that we set up in a subsequent patch facilitates this), promote the write to copy-on-write so that the entire extent can get written out as a single extent on disk, thereby reducing post-CoW fragmentation. Christoph moved the CoW support code in _map_blocks to a separate helper function, refactored other functions, and reduced the number of CoW fork lookups, so I merged those changes here to reduce churn. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Modify xfs_bmap_add_extent_delay_real() so that we can convert delayed allocation extents in the CoW fork to real allocations, and wire this up all the way back to xfs_iomap_write_allocate(). In a subsequent patch, we'll modify the writepage handler to call this. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Wire up iomap_begin to detect shared extents and create delayed allocation extents in the CoW fork: 1) Check if we already have an extent in the COW fork for the area. If so nothing to do, we can move along. 2) Look up block number for the current extent, and if there is none it's not shared move along. 3) Unshare the current extent as far as we are going to write into it. For this we avoid an additional COW fork lookup and use the information we set aside in step 1) above. 4) Goto 1) unless we've covered the whole range. Last but not least, this updates the xfs_reflink_reserve_cow_range calling convention to pass a byte offset and length, as that is what both callers expect anyway. This patch has been refactored considerably as part of the iomap transition. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Allow the creation of delayed allocation extents in the CoW fork. In a subsequent patch we'll wire up iomap_begin to actually do this via reflink helper functions. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Introduce a new in-core fork for storing copy-on-write delalloc reservations and allocated extents that are in the process of being written out. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Only non-rt files can be reflinked, so check that when we load an inode. Also, don't leak the attr fork if there's a failure. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Report the reflink feature in the XFS geometry so that xfs_info and friends know the filesystem has this feature. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Define all the tracepoints we need to inspect the runtime operation of reflink/dedupe/copy-on-write. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Return the range of file blocks that bunmapi didn't free. This hint is used by CoW and reflink to figure out what part of an extent actually got freed so that it can set up the appropriate atomic remapping of just the freed range. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Log recovery will iget an inode to replay BUI items and iput the inode when it's done. Unfortunately, if the inode was unlinked, the iput will see that i_nlink == 0 and decide to truncate & free the inode, which prevents us from replaying subsequent BUIs. We can't skip the BUIs because we have to replay all the redo items to ensure that atomic operations complete. Since unlinked inode recovery will reap the inode anyway, we can safely introduce a new inode flag to indicate that an inode is in this 'unlinked recovery' state and should not be auto-reaped in the drop_inode path. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Implement deferred versions of the inode block map/unmap functions. These will be used in subsequent patches to make reflink operations atomic. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Pass BMAPI_ flags from bunmapi into bmap_del_extent and extend BMAPI_REMAP (which means "don't touch the allocator or the quota accounting") to apply to bunmapi as well. This will be used to implement the unmap operation, which will be used by swapext. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Teach the bmap routine to know how to map a range of file blocks to a specific range of physical blocks, instead of simply allocating fresh blocks. This enables reflink to map a file to blocks that are already in use. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Provide a mechanism for higher levels to create BUI/BUD items, submit them to the log, and a stub function to deal with recovered BUI items. These parts will be connected to the rmapbt in a later patch. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Create bmbt update intent/done log items to record redo information in the log. Because we roll transactions multiple times for reflink operations, we also have to track the status of the metadata updates that will be recorded in the post-roll transactions in case we crash before committing the final transaction. This mechanism enables log recovery to finish what was already started. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
- 04 10月, 2016 18 次提交
-
-
由 Darrick J. Wong 提交于
These functions will be used by the other reflink functions to find the maximum length of a range of shared blocks. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.coM> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Reduce the max AG usable space size so that we always have space for the refcount btree root. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Identify refcountbt blocks in the log correctly so that we can validate them during log recovery. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
When we're unmapping blocks from a reflinked file, decrease the refcount of the affected blocks and free the extents that are no longer in use. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Plumb in the upper level interface to schedule and finish deferred refcount operations via the deferred ops mechanism. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Provide functions to adjust the reference counts for an extent of physical blocks stored in the refcount btree. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Provide a mechanism for higher levels to create CUI/CUD items, submit them to the log, and a stub function to deal with recovered CUI items. These parts will be connected to the refcountbt in a later patch. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Create refcount update intent/done log items to record redo information in the log. Because we need to roll transactions between updating the bmbt mapping and updating the reverse mapping, we also have to track the status of the metadata updates that will be recorded in the post-roll transactions, just in case we crash before committing the final transaction. This mechanism enables log recovery to finish what was already started. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Implement the generic btree operations required to manipulate refcount btree blocks. The implementation is similar to the bmapbt, though it will only allocate and free blocks from the AG. Since the refcount root and level fields are separate from the existing roots and levels array, they need a separate logging flag. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> [hch: fix logging of AGF refcount btree fields] Signed-off-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Every time we allocate or free a data extent, we might need to split the refcount btree. Reserve some blocks in the transaction to handle this possibility. Even though the deferred refcount code can roll a transaction to avoid overloading the transaction, we can still exceed the reservation. Certain pathological workloads (1k blocks, no cowextsize hint, random directio writes), cause a perfect storm wherein a refcount adjustment of a large range of blocks causes full tree splits in two separate extents in two separate refcount tree blocks; allocating new refcount tree blocks causes rmap btree splits; and all the allocation activity causes the freespace btrees to split, blowing the reservation. (Reproduced by generic/167 over NFS atop XFS) Signed-off-by: NChristoph Hellwig <hch@lst.de> [darrick.wong@oracle.com: add commit message] Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
-
由 Darrick J. Wong 提交于
Modify the growfs code to initialize new refcount btree blocks. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Start constructing the refcount btree implementation by establishing the on-disk format and everything needed to read, write, and manipulate the refcount btree blocks. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Since XFS reserves a small amount of space in each AG as the minimum free space needed for an operation, save some more space in case we touch the refcount btree. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Add new per-AG refcount btree definitions to the per-AG structures. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Define all the tracepoints we need to inspect the refcount btree runtime operation. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
If the size of an inline directory is so small that it doesn't even cover the required header size, return an error to userspace instead of ASSERTing and returning 0 like everything's ok. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reported-by: NJan Kara <jack@suse.cz> Reviewed-by: NBrian Foster <bfoster@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Darrick J. Wong 提交于
Add a new fallocate mode flag that explicitly unshares blocks on filesystems that support such features. The new flag can only be used with an allocate-mode fallocate call. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
-
由 Darrick J. Wong 提交于
Introduce XFLAGs for the new XFS CoW extent size hint, and actually plumb the CoW extent size hint into the fsxattr structure. Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
- 03 10月, 2016 5 次提交
-
-
由 Dave Chinner 提交于
-
由 Dave Chinner 提交于
-
由 Dave Chinner 提交于
-
由 Dave Chinner 提交于
-
由 Dave Chinner 提交于
-