diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_rtbitmap.c')
-rw-r--r-- | fs/xfs/libxfs/xfs_rtbitmap.c | 106 |
1 files changed, 47 insertions, 59 deletions
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c index c269d704314d..e31663cb7b43 100644 --- a/fs/xfs/libxfs/xfs_rtbitmap.c +++ b/fs/xfs/libxfs/xfs_rtbitmap.c @@ -184,7 +184,7 @@ xfs_rtfind_back( * Calculate first (leftmost) bit number to look at, * and mask for all the relevant bits in this word. */ - firstbit = XFS_RTMAX((xfs_srtblock_t)(bit - len + 1), 0); + firstbit = max_t(xfs_srtblock_t, bit - len + 1, 0); mask = (((xfs_rtword_t)1 << (bit - firstbit + 1)) - 1) << firstbit; /* @@ -195,7 +195,7 @@ xfs_rtfind_back( /* * Different. Mark where we are and return. */ - i = bit - XFS_RTHIBIT(wdiff); + i = bit - xfs_highbit32(wdiff); *rtx = start - i + 1; return 0; } @@ -233,7 +233,7 @@ xfs_rtfind_back( /* * Different, mark where we are and return. */ - i += XFS_NBWORD - 1 - XFS_RTHIBIT(wdiff); + i += XFS_NBWORD - 1 - xfs_highbit32(wdiff); *rtx = start - i + 1; return 0; } @@ -272,7 +272,7 @@ xfs_rtfind_back( /* * Different, mark where we are and return. */ - i += XFS_NBWORD - 1 - XFS_RTHIBIT(wdiff); + i += XFS_NBWORD - 1 - xfs_highbit32(wdiff); *rtx = start - i + 1; return 0; } else @@ -338,7 +338,7 @@ xfs_rtfind_forw( * Calculate last (rightmost) bit number to look at, * and mask for all the relevant bits in this word. */ - lastbit = XFS_RTMIN(bit + len, XFS_NBWORD); + lastbit = min(bit + len, XFS_NBWORD); mask = (((xfs_rtword_t)1 << (lastbit - bit)) - 1) << bit; /* * Calculate the difference between the value there @@ -348,7 +348,7 @@ xfs_rtfind_forw( /* * Different. Mark where we are and return. */ - i = XFS_RTLOBIT(wdiff) - bit; + i = xfs_lowbit32(wdiff) - bit; *rtx = start + i - 1; return 0; } @@ -386,7 +386,7 @@ xfs_rtfind_forw( /* * Different, mark where we are and return. */ - i += XFS_RTLOBIT(wdiff); + i += xfs_lowbit32(wdiff); *rtx = start + i - 1; return 0; } @@ -423,7 +423,7 @@ xfs_rtfind_forw( /* * Different, mark where we are and return. */ - i += XFS_RTLOBIT(wdiff); + i += xfs_lowbit32(wdiff); *rtx = start + i - 1; return 0; } else @@ -452,71 +452,59 @@ xfs_trans_log_rtsummary( } /* - * Read and/or modify the summary information for a given extent size, - * bitmap block combination. - * Keeps track of a current summary block, so we don't keep reading - * it from the buffer cache. - * - * Summary information is returned in *sum if specified. - * If no delta is specified, returns summary only. + * Modify the summary information for a given extent size, bitmap block + * combination. */ int -xfs_rtmodify_summary_int( +xfs_rtmodify_summary( struct xfs_rtalloc_args *args, int log, /* log2 of extent size */ xfs_fileoff_t bbno, /* bitmap block number */ - int delta, /* change to make to summary info */ - xfs_suminfo_t *sum) /* out: summary info for this block */ + int delta) /* in/out: summary block number */ { struct xfs_mount *mp = args->mp; - int error; - xfs_fileoff_t sb; /* summary fsblock */ - xfs_rtsumoff_t so; /* index into the summary file */ + xfs_rtsumoff_t so = xfs_rtsumoffs(mp, log, bbno); unsigned int infoword; + xfs_suminfo_t val; + int error; - /* - * Compute entry number in the summary file. - */ - so = xfs_rtsumoffs(mp, log, bbno); - /* - * Compute the block number in the summary file. - */ - sb = xfs_rtsumoffs_to_block(mp, so); - - error = xfs_rtsummary_read_buf(args, sb); + error = xfs_rtsummary_read_buf(args, xfs_rtsumoffs_to_block(mp, so)); if (error) return error; - /* - * Point to the summary information, modify/log it, and/or copy it out. - */ infoword = xfs_rtsumoffs_to_infoword(mp, so); - if (delta) { - xfs_suminfo_t val = xfs_suminfo_add(args, infoword, delta); - - if (mp->m_rsum_cache) { - if (val == 0 && log + 1 == mp->m_rsum_cache[bbno]) - mp->m_rsum_cache[bbno] = log; - if (val != 0 && log >= mp->m_rsum_cache[bbno]) - mp->m_rsum_cache[bbno] = log + 1; - } - xfs_trans_log_rtsummary(args, infoword); - if (sum) - *sum = val; - } else if (sum) { - *sum = xfs_suminfo_get(args, infoword); + val = xfs_suminfo_add(args, infoword, delta); + + if (mp->m_rsum_cache) { + if (val == 0 && log + 1 == mp->m_rsum_cache[bbno]) + mp->m_rsum_cache[bbno] = log; + if (val != 0 && log >= mp->m_rsum_cache[bbno]) + mp->m_rsum_cache[bbno] = log + 1; } + + xfs_trans_log_rtsummary(args, infoword); return 0; } +/* + * Read and return the summary information for a given extent size, bitmap block + * combination. + */ int -xfs_rtmodify_summary( +xfs_rtget_summary( struct xfs_rtalloc_args *args, int log, /* log2 of extent size */ xfs_fileoff_t bbno, /* bitmap block number */ - int delta) /* in/out: summary block number */ + xfs_suminfo_t *sum) /* out: summary info for this block */ { - return xfs_rtmodify_summary_int(args, log, bbno, delta, NULL); + struct xfs_mount *mp = args->mp; + xfs_rtsumoff_t so = xfs_rtsumoffs(mp, log, bbno); + int error; + + error = xfs_rtsummary_read_buf(args, xfs_rtsumoffs_to_block(mp, so)); + if (!error) + *sum = xfs_suminfo_get(args, xfs_rtsumoffs_to_infoword(mp, so)); + return error; } /* Log rtbitmap block from the word @from to the byte before @next. */ @@ -585,7 +573,7 @@ xfs_rtmodify_range( /* * Compute first bit not changed and mask of relevant bits. */ - lastbit = XFS_RTMIN(bit + len, XFS_NBWORD); + lastbit = min(bit + len, XFS_NBWORD); mask = (((xfs_rtword_t)1 << (lastbit - bit)) - 1) << bit; /* * Set/clear the active bits. @@ -720,7 +708,7 @@ xfs_rtfree_range( */ if (preblock < start) { error = xfs_rtmodify_summary(args, - XFS_RTBLOCKLOG(start - preblock), + xfs_highbit64(start - preblock), xfs_rtx_to_rbmblock(mp, preblock), -1); if (error) { return error; @@ -732,7 +720,7 @@ xfs_rtfree_range( */ if (postblock > end) { error = xfs_rtmodify_summary(args, - XFS_RTBLOCKLOG(postblock - end), + xfs_highbit64(postblock - end), xfs_rtx_to_rbmblock(mp, end + 1), -1); if (error) { return error; @@ -743,7 +731,7 @@ xfs_rtfree_range( * (new) free extent. */ return xfs_rtmodify_summary(args, - XFS_RTBLOCKLOG(postblock + 1 - preblock), + xfs_highbit64(postblock + 1 - preblock), xfs_rtx_to_rbmblock(mp, preblock), 1); } @@ -799,7 +787,7 @@ xfs_rtcheck_range( /* * Compute first bit not examined. */ - lastbit = XFS_RTMIN(bit + len, XFS_NBWORD); + lastbit = min(bit + len, XFS_NBWORD); /* * Mask of relevant bits. */ @@ -812,7 +800,7 @@ xfs_rtcheck_range( /* * Different, compute first wrong bit and return. */ - i = XFS_RTLOBIT(wdiff) - bit; + i = xfs_lowbit32(wdiff) - bit; *new = start + i; *stat = 0; return 0; @@ -851,7 +839,7 @@ xfs_rtcheck_range( /* * Different, compute first wrong bit and return. */ - i += XFS_RTLOBIT(wdiff); + i += xfs_lowbit32(wdiff); *new = start + i; *stat = 0; return 0; @@ -889,7 +877,7 @@ xfs_rtcheck_range( /* * Different, compute first wrong bit and return. */ - i += XFS_RTLOBIT(wdiff); + i += xfs_lowbit32(wdiff); *new = start + i; *stat = 0; return 0; |