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xfs: factor out code to find the longest free extent in the AG

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Signed-off-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dave Chinner
2009-03-16 08:29:46 +01:00
committed by Christoph Hellwig
parent cb4c8cc1e9
commit 6cc87645e2
4 changed files with 31 additions and 22 deletions
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6
fs/xfs/xfs_alloc.h
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@@ -100,6 +100,12 @@ typedef struct xfs_alloc_arg {
#define XFS_ALLOC_USERDATA 1 /* allocation is for user data*/
#define XFS_ALLOC_INITIAL_USER_DATA 2 /* special case start of file */
/*
* Find the length of the longest extent in an AG.
*/
xfs_extlen_t
xfs_alloc_longest_free_extent(struct xfs_mount *mp,
struct xfs_perag *pag);
#ifdef __KERNEL__