From: Darrick J. Wong <djwong@xxxxxxxxxx>
Convert the realtime summary file macros to helper functions so that we
can improve type checking.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/libxfs/xfs_format.h | 9 +-------
fs/xfs/libxfs/xfs_rtbitmap.c | 10 +++++---
fs/xfs/libxfs/xfs_rtbitmap.h | 50 ++++++++++++++++++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_types.h | 2 ++
fs/xfs/scrub/rtsummary.c | 10 ++++----
5 files changed, 64 insertions(+), 17 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index ac6dd102342d..d48e3a395bd9 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -1144,15 +1144,8 @@ static inline bool xfs_dinode_has_large_extent_counts(
#define XFS_BLOCKMASK(mp) ((mp)->m_blockmask)
/*
- * RT Summary and bit manipulation macros.
+ * RT bit manipulation macros.
*/
-#define XFS_SUMOFFS(mp,ls,bb) ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
-#define XFS_SUMOFFSTOBLOCK(mp,s) \
- (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
-#define XFS_SUMPTR(mp,bp,so) \
- ((xfs_suminfo_t *)((bp)->b_addr + \
- (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
-
#define XFS_RTMIN(a,b) ((a) < (b) ? (a) : (b))
#define XFS_RTMAX(a,b) ((a) > (b) ? (a) : (b))
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c
index ce8a218f8e65..093a4b7b00f0 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.c
+++ b/fs/xfs/libxfs/xfs_rtbitmap.c
@@ -455,17 +455,18 @@ xfs_rtmodify_summary_int(
struct xfs_buf *bp; /* buffer for the summary block */
int error; /* error value */
xfs_fileoff_t sb; /* summary fsblock */
- int so; /* index into the summary file */
+ xfs_rtsumoff_t so; /* index into the summary file */
xfs_suminfo_t *sp; /* pointer to returned data */
+ unsigned int infoword;
/*
* Compute entry number in the summary file.
*/
- so = XFS_SUMOFFS(mp, log, bbno);
+ so = xfs_rtsumoffs(mp, log, bbno);
/*
* Compute the block number in the summary file.
*/
- sb = XFS_SUMOFFSTOBLOCK(mp, so);
+ sb = xfs_rtsumoffs_to_block(mp, so);
/*
* If we have an old buffer, and the block number matches, use that.
*/
@@ -493,7 +494,8 @@ xfs_rtmodify_summary_int(
/*
* Point to the summary information, modify/log it, and/or copy it out.
*/
- sp = XFS_SUMPTR(mp, bp, so);
+ infoword = xfs_rtsumoffs_to_infoword(mp, so);
+ sp = xfs_rsumblock_infoptr(bp, infoword);
if (delta) {
uint first = (uint)((char *)sp - (char *)bp->b_addr);
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.h b/fs/xfs/libxfs/xfs_rtbitmap.h
index 3252ed217a6a..79ade6d2361b 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.h
+++ b/fs/xfs/libxfs/xfs_rtbitmap.h
@@ -169,6 +169,56 @@ xfs_rbmblock_wordptr(
return words + index;
}
+/*
+ * Convert a rt extent length and rt bitmap block number to a xfs_suminfo_t
+ * offset within the rt summary file.
+ */
+static inline xfs_rtsumoff_t
+xfs_rtsumoffs(
+ struct xfs_mount *mp,
+ int log2_len,
+ xfs_fileoff_t rbmoff)
+{
+ return log2_len * mp->m_sb.sb_rbmblocks + rbmoff;
+}
+
+/*
+ * Convert an xfs_suminfo_t offset to a file block offset within the rt summary
+ * file.
+ */
+static inline xfs_fileoff_t
+xfs_rtsumoffs_to_block(
+ struct xfs_mount *mp,
+ xfs_rtsumoff_t rsumoff)
+{
+ return XFS_B_TO_FSBT(mp, rsumoff * sizeof(xfs_suminfo_t));
+}
+
+/*
+ * Convert an xfs_suminfo_t offset to an info word offset within an rt summary
+ * block.
+ */
+static inline unsigned int
+xfs_rtsumoffs_to_infoword(
+ struct xfs_mount *mp,
+ xfs_rtsumoff_t rsumoff)
+{
+ unsigned int mask = mp->m_blockmask >> XFS_SUMINFOLOG;
+
+ return rsumoff & mask;
+}
+
+/* Return a pointer to a summary info word within a rt summary block. */
+static inline xfs_suminfo_t *
+xfs_rsumblock_infoptr(
+ struct xfs_buf *bp,
+ unsigned int index)
+{
+ xfs_suminfo_t *info = bp->b_addr;
+
+ return info + index;
+}
+
/*
* Functions for walking free space rtextents in the realtime bitmap.
*/
diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
index c78237852e27..533200c4ccc2 100644
--- a/fs/xfs/libxfs/xfs_types.h
+++ b/fs/xfs/libxfs/xfs_types.h
@@ -19,6 +19,7 @@ typedef int64_t xfs_fsize_t; /* bytes in a file */
typedef uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
typedef int32_t xfs_suminfo_t; /* type of bitmap summary info */
+typedef uint32_t xfs_rtsumoff_t; /* offset of an rtsummary info word */
typedef uint32_t xfs_rtword_t; /* word type for bitmap manipulations */
typedef int64_t xfs_lsn_t; /* log sequence number */
@@ -149,6 +150,7 @@ typedef uint32_t xfs_dqid_t;
*/
#define XFS_NBBYLOG 3 /* log2(NBBY) */
#define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */
+#define XFS_SUMINFOLOG 2 /* log2(sizeof(xfs_suminfo_t)) */
#define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG)
#define XFS_NBWORD (1 << XFS_NBWORDLOG)
#define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1)
diff --git a/fs/xfs/scrub/rtsummary.c b/fs/xfs/scrub/rtsummary.c
index 169b7b0dcaa5..9503e32ee07a 100644
--- a/fs/xfs/scrub/rtsummary.c
+++ b/fs/xfs/scrub/rtsummary.c
@@ -81,7 +81,7 @@ typedef unsigned int xchk_rtsumoff_t;
static inline int
xfsum_load(
struct xfs_scrub *sc,
- xchk_rtsumoff_t sumoff,
+ xfs_rtsumoff_t sumoff,
xfs_suminfo_t *info)
{
return xfile_obj_load(sc->xfile, info, sizeof(xfs_suminfo_t),
@@ -91,7 +91,7 @@ xfsum_load(
static inline int
xfsum_store(
struct xfs_scrub *sc,
- xchk_rtsumoff_t sumoff,
+ xfs_rtsumoff_t sumoff,
const xfs_suminfo_t info)
{
return xfile_obj_store(sc->xfile, &info, sizeof(xfs_suminfo_t),
@@ -101,7 +101,7 @@ xfsum_store(
static inline int
xfsum_copyout(
struct xfs_scrub *sc,
- xchk_rtsumoff_t sumoff,
+ xfs_rtsumoff_t sumoff,
xfs_suminfo_t *info,
unsigned int nr_words)
{
@@ -121,7 +121,7 @@ xchk_rtsum_record_free(
xfs_fileoff_t rbmoff;
xfs_rtblock_t rtbno;
xfs_filblks_t rtlen;
- xchk_rtsumoff_t offs;
+ xfs_rtsumoff_t offs;
unsigned int lenlog;
xfs_suminfo_t v = 0;
int error = 0;
@@ -132,7 +132,7 @@ xchk_rtsum_record_free(
/* Compute the relevant location in the rtsum file. */
rbmoff = xfs_rtx_to_rbmblock(mp, rec->ar_startext);
lenlog = XFS_RTBLOCKLOG(rec->ar_extcount);
- offs = XFS_SUMOFFS(mp, lenlog, rbmoff);
+ offs = xfs_rtsumoffs(mp, lenlog, rbmoff);
rtbno = xfs_rtx_to_rtb(mp, rec->ar_startext);
rtlen = xfs_rtx_to_rtb(mp, rec->ar_extcount);
