diff options
Diffstat (limited to 'fs/xfs/libxfs')
-rw-r--r-- | fs/xfs/libxfs/xfs_format.h | 9 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_rtbitmap.c | 10 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_rtbitmap.h | 50 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_types.h | 2 |
4 files changed, 59 insertions, 12 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 cc3e70b7fbe5..efa084de58c2 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 @@ -170,6 +170,56 @@ xfs_rbmblock_wordptr( } /* + * 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. */ struct xfs_rtalloc_rec { 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) |