From c3f3353475a582998db26663e12656e8a8372932 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 29 Aug 2017 15:44:12 -0700
Subject: [PATCH 03/77] xfs: use xfs_iext_get_extent in xfs_bmap_first_unused
Git-commit: f2285c148c4167337d12452bebccadd2ad821d5d
Patch-mainline: v4.14-rc1
References: bsc#1095344
Use the bmap abstraction instead of open-coding bmbt details here.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
fs/xfs/libxfs/xfs_bmap.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index e3d1becf4082..e4be3980add0 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -1363,7 +1363,6 @@ xfs_bmap_first_unused(
xfs_fileoff_t lastaddr; /* last block number seen */
xfs_fileoff_t lowest; /* lowest useful block */
xfs_fileoff_t max; /* starting useful block */
- xfs_fileoff_t off; /* offset for this block */
xfs_extnum_t nextents; /* number of extent entries */
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE ||
@@ -1380,16 +1379,19 @@ xfs_bmap_first_unused(
lowest = *first_unused;
nextents = xfs_iext_count(ifp);
for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) {
- xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx);
- off = xfs_bmbt_get_startoff(ep);
+ struct xfs_bmbt_irec got;
+
+ xfs_iext_get_extent(ifp, idx, &got);
+
/*
* See if the hole before this extent will work.
*/
- if (off >= lowest + len && off - max >= len) {
+ if (got.br_startoff >= lowest + len &&
+ got.br_startoff - max >= len) {
*first_unused = max;
return 0;
}
- lastaddr = off + xfs_bmbt_get_blockcount(ep);
+ lastaddr = got.br_startoff + got.br_blockcount;
max = XFS_FILEOFF_MAX(lastaddr, lowest);
}
*first_unused = max;
--
2.7.4