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* xfs: improve handling of busy extents in the low-level allocatorChristoph Hellwig2017-02-091-2/+9
| | | | | | | | | | | | | | | | | Currently we force the log and simply try again if we hit a busy extent, but especially with online discard enabled it might take a while after the log force for the busy extents to disappear, and we might have already completed our second pass. So instead we add a new waitqueue and a generation counter to the pag structure so that we can do wakeups once we've removed busy extents, and we replace the single retry with an unconditional one - after all we hold the AGF buffer lock, so no other allocations or frees can be racing with us in this AG. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
* xfs: decouple inode and bmap btree header filesDave Chinner2013-10-231-0/+4
| | | | | | | | | | | | | | | | | | | | Currently the xfs_inode.h header has a dependency on the definition of the BMAP btree records as the inode fork includes an array of xfs_bmbt_rec_host_t objects in it's definition. Move all the btree format definitions from xfs_btree.h, xfs_bmap_btree.h, xfs_alloc_btree.h and xfs_ialloc_btree.h to xfs_format.h to continue the process of centralising the on-disk format definitions. With this done, the xfs inode definitions are no longer dependent on btree header files. The enables a massive culling of unnecessary includes, with close to 200 #include directives removed from the XFS kernel code base. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: make xfs_extent_busy_trim not staticBen Myers2012-05-141-0/+4
| | | | | | | | | | | | | | | Commit e459df5, 'xfs: move busy extent handling to it's own file' moved some code from xfs_alloc.c into xfs_extent_busy.c for convenience in userspace code merges. One of the functions moved is xfs_extent_busy_trim (formerly xfs_alloc_busy_trim) which is defined STATIC. Unfortunately this function is still used in xfs_alloc.c, and this results in an undefined symbol in xfs.ko. Make xfs_extent_busy_trim not static and add its prototype to xfs_extent_busy.h. Signed-off-by: Ben Myers <bpm@sgi.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com>
* xfs: clean up busy extent namingDave Chinner2012-05-141-10/+10
| | | | | | | | | | | | Now that the busy extent tracking has been moved out of the allocation files, clean up the namespace it uses to "xfs_extent_busy" rather than a mix of "xfs_busy" and "xfs_alloc_busy". Signed-off-by: Dave Chinner<dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: move busy extent handling to it's own fileDave Chinner2012-05-141-0/+65
To make it easier to handle userspace code merges, move all the busy extent handling out of the allocation code and into it's own file. The userspace code does not need the busy extent code, so this simplifies the merging of the kernel code into the userspace xfsprogs library. Because the busy extent code has been almost completely rewritten over the past couple of years, also update the copyright on this new file to include the authors that made all those changes. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
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