From: Darrick J. Wong <djwong@xxxxxxxxxx>
Source kernel commit: 3f0205ebe71f92c1b98ca580de8df6eea631cfd2
We're about to segment xfs_rtblock_t addresses, so we must create
type-specific helpers to do rt extent rounding of file mapping block
lengths because the rtb helpers soon will not do the right thing there.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
libxfs/xfs_rtbitmap.c | 2 +-
libxfs/xfs_rtbitmap.h | 30 +++++++++++++++++++++---------
2 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/libxfs/xfs_rtbitmap.c b/libxfs/xfs_rtbitmap.c
index 44c801f31d5dc3..e304f07189d3c9 100644
--- a/libxfs/xfs_rtbitmap.c
+++ b/libxfs/xfs_rtbitmap.c
@@ -1119,7 +1119,7 @@ xfs_rtfree_blocks(
ASSERT(rtlen <= XFS_MAX_BMBT_EXTLEN);
- mod = xfs_rtb_to_rtxoff(mp, rtlen);
+ mod = xfs_blen_to_rtxoff(mp, rtlen);
if (mod) {
ASSERT(mod == 0);
return -EIO;
diff --git a/libxfs/xfs_rtbitmap.h b/libxfs/xfs_rtbitmap.h
index dc2b8beadfc331..e0fb36f181cc9e 100644
--- a/libxfs/xfs_rtbitmap.h
+++ b/libxfs/xfs_rtbitmap.h
@@ -101,6 +101,27 @@ xfs_blen_to_rtbxlen(
return div_u64(blen, mp->m_sb.sb_rextsize);
}
+/* Return the offset of a file block length within an rt extent. */
+static inline xfs_extlen_t
+xfs_blen_to_rtxoff(
+ struct xfs_mount *mp,
+ xfs_filblks_t blen)
+{
+ if (likely(mp->m_rtxblklog >= 0))
+ return blen & mp->m_rtxblkmask;
+
+ return do_div(blen, mp->m_sb.sb_rextsize);
+}
+
+/* Round this block count up to the nearest rt extent size. */
+static inline xfs_filblks_t
+xfs_blen_roundup_rtx(
+ struct xfs_mount *mp,
+ xfs_filblks_t blen)
+{
+ return roundup_64(blen, mp->m_sb.sb_rextsize);
+}
+
/* Convert an rt block number into an rt extent number. */
static inline xfs_rtxnum_t
xfs_rtb_to_rtx(
@@ -126,15 +147,6 @@ xfs_rtb_to_rtxoff(
return do_div(rtbno, mp->m_sb.sb_rextsize);
}
-/* Round this rtblock up to the nearest rt extent size. */
-static inline xfs_rtblock_t
-xfs_rtb_roundup_rtx(
- struct xfs_mount *mp,
- xfs_rtblock_t rtbno)
-{
- return roundup_64(rtbno, mp->m_sb.sb_rextsize);
-}
-
/* Round this file block offset up to the nearest rt extent size. */
static inline xfs_rtblock_t
xfs_fileoff_roundup_rtx(
