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xfs: use XFS_BUF_DADDR_NULL for daddrs in getfsmap code

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BugLink: https://bugs.launchpad.net/bugs/2102266

commit 6b35cc8d9239569700cc7cc737c8ed40b8b9cfdb upstream.

Use XFS_BUF_DADDR_NULL (instead of a magic sentinel value) to mean "this
field is null" like the rest of xfs.

Cc: wozizhi@huawei.com
Fixes: e89c041338 ("xfs: implement the GETFSMAP ioctl")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>
This commit is contained in:
Darrick J. Wong
2025-03-14 12:03:09 +09:00
committed by Mehmet Basaran
parent b68534592d
commit 960ea5ae3b
1 changed files with 2 additions and 2 deletions
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fs/xfs/xfs_fsmap.c
+2 -2
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@@ -252,7 +252,7 @@ xfs_getfsmap_rec_before_start(
const struct xfs_rmap_irec *rec,
xfs_daddr_t rec_daddr)
{
if (info->low_daddr != -1ULL)
if (info->low_daddr != XFS_BUF_DADDR_NULL)
return rec_daddr < info->low_daddr;
if (info->low.rm_blockcount)
return xfs_rmap_compare(rec, &info->low) < 0;
@@ -983,7 +983,7 @@ xfs_getfsmap(
info.dev = handlers[i].dev;
info.last = false;
info.pag = NULL;
info.low_daddr = -1ULL;
info.low_daddr = XFS_BUF_DADDR_NULL;
info.low.rm_blockcount = 0;
error = handlers[i].fn(tp, dkeys, &info);
if (error)