diff mbox series

[12/12] xfs: rename XFS_REFC_COW_START to _COWFLAG

Message ID 166689091062.3788582.5745982343341644557.stgit@magnolia (mailing list archive)
State Superseded
Headers show
Series xfs: improve runtime refcountbt corruption detection | expand

Commit Message

Darrick J. Wong Oct. 27, 2022, 5:15 p.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

We've been (ab)using XFS_REFC_COW_START as both an integer quantity and
a bit flag, even though it's *only* a bit flag.  Rename the variable to
reflect its nature and update the cast target since we're not supposed
to be comparing it to xfs_agblock_t now.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/libxfs/xfs_format.h   |    2 +-
 fs/xfs/libxfs/xfs_refcount.c |    6 +++---
 fs/xfs/libxfs/xfs_refcount.h |    4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

Comments

Dave Chinner Oct. 27, 2022, 9:25 p.m. UTC | #1 
On Thu, Oct 27, 2022 at 10:15:10AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> We've been (ab)using XFS_REFC_COW_START as both an integer quantity and
> a bit flag, even though it's *only* a bit flag.  Rename the variable to
> reflect its nature and update the cast target since we're not supposed
> to be comparing it to xfs_agblock_t now.
> 
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>

Yay!

Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff mbox series

Patch

diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 005dd65b71cd..371dc07233e0 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -1612,7 +1612,7 @@  unsigned int xfs_refc_block(struct xfs_mount *mp);
  * on the startblock.  This speeds up mount time deletion of stale
  * staging extents because they're all at the right side of the tree.
  */
-#define XFS_REFC_COW_START		((xfs_agblock_t)(1U << 31))
+#define XFS_REFC_COWFLAG		(1U << 31)
 #define REFCNTBT_COWFLAG_BITLEN		1
 #define REFCNTBT_AGBLOCK_BITLEN		31
 
diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c
index 05fa18b9e0ed..740959445170 100644
--- a/fs/xfs/libxfs/xfs_refcount.c
+++ b/fs/xfs/libxfs/xfs_refcount.c
@@ -108,8 +108,8 @@  xfs_refcount_btrec_to_irec(
 	__u32				start;
 
 	start = be32_to_cpu(rec->refc.rc_startblock);
-	if (start & XFS_REFC_COW_START) {
-		start &= ~XFS_REFC_COW_START;
+	if (start & XFS_REFC_COWFLAG) {
+		start &= ~XFS_REFC_COWFLAG;
 		irec->rc_domain = XFS_REFC_DOMAIN_COW;
 	} else {
 		irec->rc_domain = XFS_REFC_DOMAIN_SHARED;
@@ -1814,7 +1814,7 @@  xfs_refcount_recover_cow_leftovers(
 	int				error;
 
 	/* reflink filesystems mustn't have AGs larger than 2^31-1 blocks */
-	BUILD_BUG_ON(XFS_MAX_CRC_AG_BLOCKS >= XFS_REFC_COW_START);
+	BUILD_BUG_ON(XFS_MAX_CRC_AG_BLOCKS >= XFS_REFC_COWFLAG);
 	if (mp->m_sb.sb_agblocks > XFS_MAX_CRC_AG_BLOCKS)
 		return -EOPNOTSUPP;
 
diff --git a/fs/xfs/libxfs/xfs_refcount.h b/fs/xfs/libxfs/xfs_refcount.h
index d666a0e32659..cb42365596b2 100644
--- a/fs/xfs/libxfs/xfs_refcount.h
+++ b/fs/xfs/libxfs/xfs_refcount.h
@@ -34,9 +34,9 @@  xfs_refcount_encode_startblock(
 	 * query functions (which set rc_domain == -1U), so we check that the
 	 * domain is /not/ shared.
 	 */
-	start = startblock & ~XFS_REFC_COW_START;
+	start = startblock & ~XFS_REFC_COWFLAG;
 	if (domain != XFS_REFC_DOMAIN_SHARED)
-		start |= XFS_REFC_COW_START;
+		start |= XFS_REFC_COWFLAG;
 
 	return start;
 }