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xfs: move busy extent handling to it's own file

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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>
This commit is contained in:
Dave Chinner 2012-04-29 10:39:43 +00:00 • committed by Ben Myers
parent 60a34607b2
commit efc27b5259
10 changed files with 674 additions and 617 deletions
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28
fs/xfs/xfs_alloc.h
View file

@ -23,7 +23,6 @@ struct xfs_btree_cur;
struct xfs_mount;
struct xfs_perag;
struct xfs_trans;
struct xfs_busy_extent;
extern struct workqueue_struct *xfs_alloc_wq;
@ -139,33 +138,6 @@ xfs_extlen_t
xfs_alloc_longest_free_extent(struct xfs_mount *mp,
struct xfs_perag *pag);
#ifdef __KERNEL__
void
xfs_alloc_busy_insert(struct xfs_trans *tp, xfs_agnumber_t agno,
xfs_agblock_t bno, xfs_extlen_t len, unsigned int flags);
void
xfs_alloc_busy_clear(struct xfs_mount *mp, struct list_head *list,
bool do_discard);
int
xfs_alloc_busy_search(struct xfs_mount *mp, xfs_agnumber_t agno,
xfs_agblock_t bno, xfs_extlen_t len);
void
xfs_alloc_busy_reuse(struct xfs_mount *mp, xfs_agnumber_t agno,
xfs_agblock_t fbno, xfs_extlen_t flen, bool userdata);
int
xfs_busy_extent_ag_cmp(void *priv, struct list_head *a, struct list_head *b);
static inline void xfs_alloc_busy_sort(struct list_head *list)
{
list_sort(NULL, list, xfs_busy_extent_ag_cmp);
}
#endif /* __KERNEL__ */
/*
* Compute and fill in value of m_ag_maxlevels.
*/