linux-sg2042/fs/xfs/linux-2.6/xfs_discard.h

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#ifndef XFS_DISCARD_H
#define XFS_DISCARD_H 1
struct fstrim_range;
struct list_head;
extern int xfs_ioc_trim(struct xfs_mount *, struct fstrim_range __user *);
extern int xfs_discard_extents(struct xfs_mount *, struct list_head *);
#endif /* XFS_DISCARD_H */