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xfs: use new extent lookup helpers in xfs_reflink_trim_irec_to_next_cow 

And remove the unused return value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
hifive-unleashed-5.1
Christoph Hellwig 2016-11-24 11:39:50 +11:00 committed by Dave Chinner
parent 092d5d9d58
commit 86f12ab05f
2 changed files with 13 additions and 22 deletions
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33
fs/xfs/xfs_reflink.c
View File

@ -451,43 +451,34 @@ xfs_reflink_find_cow_mapping(
/*
* Trim an extent to end at the next CoW reservation past offset_fsb.
*/
int
void
xfs_reflink_trim_irec_to_next_cow(
struct xfs_inode *ip,
xfs_fileoff_t offset_fsb,
struct xfs_bmbt_irec *imap)
{
struct xfs_bmbt_irec irec;
struct xfs_ifork *ifp;
struct xfs_bmbt_rec_host *gotp;
struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
struct xfs_bmbt_irec got;
xfs_extnum_t idx;
if (!xfs_is_reflink_inode(ip))
return 0;
return;
/* Find the extent in the CoW fork. */
ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
gotp = xfs_iext_bno_to_ext(ifp, offset_fsb, &idx);
if (!gotp)
return 0;
xfs_bmbt_get_all(gotp, &irec);
if (!xfs_iext_lookup_extent(ip, ifp, offset_fsb, &idx, &got))
return;
/* This is the extent before; try sliding up one. */
if (irec.br_startoff < offset_fsb) {
idx++;
if (idx >= xfs_iext_count(ifp))
return 0;
gotp = xfs_iext_get_ext(ifp, idx);
xfs_bmbt_get_all(gotp, &irec);
if (got.br_startoff < offset_fsb) {
if (!xfs_iext_get_extent(ifp, idx + 1, &got))
return;
}
if (irec.br_startoff >= imap->br_startoff + imap->br_blockcount)
return 0;
if (got.br_startoff >= imap->br_startoff + imap->br_blockcount)
return;
imap->br_blockcount = irec.br_startoff - imap->br_startoff;
imap->br_blockcount = got.br_startoff - imap->br_startoff;
trace_xfs_reflink_trim_irec(ip, imap);
return 0;
}
/*

2
fs/xfs/xfs_reflink.h
View File

@ -32,7 +32,7 @@ extern int xfs_reflink_allocate_cow_range(struct xfs_inode *ip,
xfs_off_t offset, xfs_off_t count);
extern bool xfs_reflink_find_cow_mapping(struct xfs_inode *ip, xfs_off_t offset,
struct xfs_bmbt_irec *imap);
extern int xfs_reflink_trim_irec_to_next_cow(struct xfs_inode *ip,
extern void xfs_reflink_trim_irec_to_next_cow(struct xfs_inode *ip,
xfs_fileoff_t offset_fsb, struct xfs_bmbt_irec *imap);
extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,