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authorChristoph Hellwig <hch@lst.de>2017-10-18 00:16:19 +0300
committerDarrick J. Wong <darrick.wong@oracle.com>2017-10-27 01:38:20 +0300
commit232b51948b99dfcc95e81d8a289bc0409b3ff5b3 (patch)
tree1fccfa555e5615315aa2ded63028f4d5fc7799bf /fs/xfs/xfs_bmap_util.h
parentabbf9e8a45074844efc91990a75dfe47fab70fa6 (diff)
downloadlinux-232b51948b99dfcc95e81d8a289bc0409b3ff5b3.tar.xz
xfs: simplify the xfs_getbmap interface
Instead of passing in a formatter callback allocate the bmap buffer in the caller and process the entries there. Additionally replace the in-kernel buffer with a new much smaller structure, and unify the implementation of the different ioctls in a single function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_bmap_util.h')
-rw-r--r--fs/xfs/xfs_bmap_util.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h
index 7d330b3c77c3..4d4ae48bd4f6 100644
--- a/fs/xfs/xfs_bmap_util.h
+++ b/fs/xfs/xfs_bmap_util.h
@@ -47,10 +47,14 @@ int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
xfs_fileoff_t start_fsb, xfs_fileoff_t length);
-/* bmap to userspace formatter - copy to user & advance pointer */
-typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *);
+struct kgetbmap {
+ __s64 bmv_offset; /* file offset of segment in blocks */
+ __s64 bmv_block; /* starting block (64-bit daddr_t) */
+ __s64 bmv_length; /* length of segment, blocks */
+ __s32 bmv_oflags; /* output flags */
+};
int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
- xfs_bmap_format_t formatter, void *arg);
+ struct kgetbmap *out);
/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,