diff options
author | Darrick J. Wong <djwong@kernel.org> | 2023-10-16 19:32:45 +0300 |
---|---|---|
committer | Darrick J. Wong <djwong@kernel.org> | 2023-10-18 02:24:22 +0300 |
commit | 2d5f216b77e33f9b503bd42998271da35d4b7055 (patch) | |
tree | 3821c9ece9f7cd4f5834e5a2c01f71eb5b4d3083 /fs/xfs/xfs_rtalloc.c | |
parent | 3d2b6d034f0feb7741b313f978a2fe45e917e1be (diff) | |
download | linux-2d5f216b77e33f9b503bd42998271da35d4b7055.tar.xz |
xfs: convert rt extent numbers to xfs_rtxnum_t
Further disambiguate the xfs_rtblock_t uses by creating a new type,
xfs_rtxnum_t, to store the position of an extent within the realtime
section, in units of rtextents.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
-rw-r--r-- | fs/xfs/xfs_rtalloc.c | 136 |
1 files changed, 68 insertions, 68 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index a109dd06f87a..62faec195040 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -143,15 +143,15 @@ STATIC int /* error */ xfs_rtallocate_range( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ - xfs_rtblock_t start, /* start block to allocate */ + xfs_rtxnum_t start, /* start rtext to allocate */ xfs_rtxlen_t len, /* length to allocate */ struct xfs_buf **rbpp, /* in/out: summary block buffer */ xfs_fileoff_t *rsb) /* in/out: summary block number */ { - xfs_rtblock_t end; /* end of the allocated extent */ + xfs_rtxnum_t end; /* end of the allocated rtext */ int error; /* error value */ - xfs_rtblock_t postblock = 0; /* first block allocated > end */ - xfs_rtblock_t preblock = 0; /* first block allocated < start */ + xfs_rtxnum_t postblock = 0; /* first rtext allocated > end */ + xfs_rtxnum_t preblock = 0; /* first rtext allocated < start */ end = start + len - 1; /* @@ -219,7 +219,7 @@ xfs_rtallocate_range( static inline xfs_rtxlen_t xfs_rtallocate_clamp_len( struct xfs_mount *mp, - xfs_rtblock_t startrtx, + xfs_rtxnum_t startrtx, xfs_rtxlen_t rtxlen, xfs_rtxlen_t prod) { @@ -232,7 +232,7 @@ xfs_rtallocate_clamp_len( /* * Attempt to allocate an extent minlen<=len<=maxlen starting from * bitmap block bbno. If we don't get maxlen then use prod to trim - * the length, if given. Returns error; returns starting block in *rtblock. + * the length, if given. Returns error; returns starting block in *rtx. * The lengths are all in rtextents. */ STATIC int /* error */ @@ -243,18 +243,18 @@ xfs_rtallocate_extent_block( xfs_rtxlen_t minlen, /* minimum length to allocate */ xfs_rtxlen_t maxlen, /* maximum length to allocate */ xfs_rtxlen_t *len, /* out: actual length allocated */ - xfs_rtblock_t *nextp, /* out: next block to try */ + xfs_rtxnum_t *nextp, /* out: next rtext to try */ struct xfs_buf **rbpp, /* in/out: summary block buffer */ xfs_fileoff_t *rsb, /* in/out: summary block number */ xfs_rtxlen_t prod, /* extent product factor */ - xfs_rtblock_t *rtblock) /* out: start block allocated */ + xfs_rtxnum_t *rtx) /* out: start rtext allocated */ { - xfs_rtblock_t besti; /* best rtblock found so far */ - xfs_rtblock_t bestlen; /* best length found so far */ - xfs_rtblock_t end; /* last rtblock in chunk */ + xfs_rtxnum_t besti; /* best rtext found so far */ + xfs_rtxnum_t bestlen; /* best length found so far */ + xfs_rtxnum_t end; /* last rtext in chunk */ int error; /* error value */ - xfs_rtblock_t i; /* current rtblock trying */ - xfs_rtblock_t next; /* next rtblock to try */ + xfs_rtxnum_t i; /* current rtext trying */ + xfs_rtxnum_t next; /* next rtext to try */ int stat; /* status from internal calls */ /* @@ -286,7 +286,7 @@ xfs_rtallocate_extent_block( return error; } *len = maxlen; - *rtblock = i; + *rtx = i; return 0; } /* @@ -296,7 +296,7 @@ xfs_rtallocate_extent_block( * so far, remember it. */ if (minlen < maxlen) { - xfs_rtblock_t thislen; /* this extent size */ + xfs_rtxnum_t thislen; /* this extent size */ thislen = next - i; if (thislen >= minlen && thislen > bestlen) { @@ -338,47 +338,47 @@ xfs_rtallocate_extent_block( return error; } *len = bestlen; - *rtblock = besti; + *rtx = besti; return 0; } /* * Allocation failed. Set *nextp to the next block to try. */ *nextp = next; - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } /* * Allocate an extent of length minlen<=len<=maxlen, starting at block * bno. If we don't get maxlen then use prod to trim the length, if given. - * Returns error; returns starting block in *rtblock. + * Returns error; returns starting block in *rtx. * The lengths are all in rtextents. */ STATIC int /* error */ xfs_rtallocate_extent_exact( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ - xfs_rtblock_t bno, /* starting block number to allocate */ + xfs_rtxnum_t start, /* starting rtext number to allocate */ xfs_rtxlen_t minlen, /* minimum length to allocate */ xfs_rtxlen_t maxlen, /* maximum length to allocate */ xfs_rtxlen_t *len, /* out: actual length allocated */ struct xfs_buf **rbpp, /* in/out: summary block buffer */ xfs_fileoff_t *rsb, /* in/out: summary block number */ xfs_rtxlen_t prod, /* extent product factor */ - xfs_rtblock_t *rtblock) /* out: start block allocated */ + xfs_rtxnum_t *rtx) /* out: start rtext allocated */ { int error; /* error value */ xfs_rtxlen_t i; /* extent length trimmed due to prod */ int isfree; /* extent is free */ - xfs_rtblock_t next; /* next block to try (dummy) */ + xfs_rtxnum_t next; /* next rtext to try (dummy) */ ASSERT(minlen % prod == 0); ASSERT(maxlen % prod == 0); /* * Check if the range in question (for maxlen) is free. */ - error = xfs_rtcheck_range(mp, tp, bno, maxlen, 1, &next, &isfree); + error = xfs_rtcheck_range(mp, tp, start, maxlen, 1, &next, &isfree); if (error) { return error; } @@ -386,23 +386,23 @@ xfs_rtallocate_extent_exact( /* * If it is, allocate it and return success. */ - error = xfs_rtallocate_range(mp, tp, bno, maxlen, rbpp, rsb); + error = xfs_rtallocate_range(mp, tp, start, maxlen, rbpp, rsb); if (error) { return error; } *len = maxlen; - *rtblock = bno; + *rtx = start; return 0; } /* * If not, allocate what there is, if it's at least minlen. */ - maxlen = next - bno; + maxlen = next - start; if (maxlen < minlen) { /* * Failed, return failure status. */ - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } /* @@ -414,39 +414,39 @@ xfs_rtallocate_extent_exact( /* * Now we can't do it, return failure status. */ - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } } /* * Allocate what we can and return it. */ - error = xfs_rtallocate_range(mp, tp, bno, maxlen, rbpp, rsb); + error = xfs_rtallocate_range(mp, tp, start, maxlen, rbpp, rsb); if (error) { return error; } *len = maxlen; - *rtblock = bno; + *rtx = start; return 0; } /* * Allocate an extent of length minlen<=len<=maxlen, starting as near - * to bno as possible. If we don't get maxlen then use prod to trim + * to start as possible. If we don't get maxlen then use prod to trim * the length, if given. The lengths are all in rtextents. */ STATIC int /* error */ xfs_rtallocate_extent_near( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ - xfs_rtblock_t bno, /* starting block number to allocate */ + xfs_rtxnum_t start, /* starting rtext number to allocate */ xfs_rtxlen_t minlen, /* minimum length to allocate */ xfs_rtxlen_t maxlen, /* maximum length to allocate */ xfs_rtxlen_t *len, /* out: actual length allocated */ struct xfs_buf **rbpp, /* in/out: summary block buffer */ xfs_fileoff_t *rsb, /* in/out: summary block number */ xfs_rtxlen_t prod, /* extent product factor */ - xfs_rtblock_t *rtblock) /* out: start block allocated */ + xfs_rtxnum_t *rtx) /* out: start rtext allocated */ { int any; /* any useful extents from summary */ xfs_fileoff_t bbno; /* bitmap block number */ @@ -454,8 +454,8 @@ xfs_rtallocate_extent_near( int i; /* bitmap block offset (loop control) */ int j; /* secondary loop control */ int log2len; /* log2 of minlen */ - xfs_rtblock_t n; /* next block to try */ - xfs_rtblock_t r; /* result block */ + xfs_rtxnum_t n; /* next rtext to try */ + xfs_rtxnum_t r; /* result rtext */ ASSERT(minlen % prod == 0); ASSERT(maxlen % prod == 0); @@ -464,20 +464,20 @@ xfs_rtallocate_extent_near( * If the block number given is off the end, silently set it to * the last block. */ - if (bno >= mp->m_sb.sb_rextents) - bno = mp->m_sb.sb_rextents - 1; + if (start >= mp->m_sb.sb_rextents) + start = mp->m_sb.sb_rextents - 1; /* Make sure we don't run off the end of the rt volume. */ - maxlen = xfs_rtallocate_clamp_len(mp, bno, maxlen, prod); + maxlen = xfs_rtallocate_clamp_len(mp, start, maxlen, prod); if (maxlen < minlen) { - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } /* * Try the exact allocation first. */ - error = xfs_rtallocate_extent_exact(mp, tp, bno, minlen, maxlen, len, + error = xfs_rtallocate_extent_exact(mp, tp, start, minlen, maxlen, len, rbpp, rsb, prod, &r); if (error) { return error; @@ -485,11 +485,11 @@ xfs_rtallocate_extent_near( /* * If the exact allocation worked, return that. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } - bbno = XFS_BITTOBLOCK(mp, bno); + bbno = XFS_BITTOBLOCK(mp, start); i = 0; ASSERT(minlen != 0); log2len = xfs_highbit32(minlen); @@ -528,8 +528,8 @@ xfs_rtallocate_extent_near( /* * If it worked, return it. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } } @@ -573,8 +573,8 @@ xfs_rtallocate_extent_near( /* * If it works, return the extent. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } } @@ -595,8 +595,8 @@ xfs_rtallocate_extent_near( /* * If it works, return the extent. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } } @@ -631,7 +631,7 @@ xfs_rtallocate_extent_near( else break; } - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } @@ -650,13 +650,13 @@ xfs_rtallocate_extent_size( struct xfs_buf **rbpp, /* in/out: summary block buffer */ xfs_fileoff_t *rsb, /* in/out: summary block number */ xfs_rtxlen_t prod, /* extent product factor */ - xfs_rtblock_t *rtblock) /* out: start block allocated */ + xfs_rtxnum_t *rtx) /* out: start rtext allocated */ { int error; /* error value */ xfs_fileoff_t i; /* bitmap block number */ int l; /* level number (loop control) */ - xfs_rtblock_t n; /* next block to be tried */ - xfs_rtblock_t r; /* result block number */ + xfs_rtxnum_t n; /* next rtext to be tried */ + xfs_rtxnum_t r; /* result rtext number */ xfs_suminfo_t sum; /* summary information for extents */ ASSERT(minlen % prod == 0); @@ -699,8 +699,8 @@ xfs_rtallocate_extent_size( /* * If it worked, return that. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } /* @@ -717,7 +717,7 @@ xfs_rtallocate_extent_size( * we're asking for a fixed size extent. */ if (minlen > --maxlen) { - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } ASSERT(minlen != 0); @@ -762,8 +762,8 @@ xfs_rtallocate_extent_size( /* * If it worked, return that extent. */ - if (r != NULLRTBLOCK) { - *rtblock = r; + if (r != NULLRTEXTNO) { + *rtx = r; return 0; } /* @@ -778,7 +778,7 @@ xfs_rtallocate_extent_size( /* * Got nothing, return failure. */ - *rtblock = NULLRTBLOCK; + *rtx = NULLRTEXTNO; return 0; } @@ -935,7 +935,7 @@ xfs_growfs_rt( xfs_mount_t *nmp; /* new (fake) mount structure */ xfs_rfsblock_t nrblocks; /* new number of realtime blocks */ xfs_extlen_t nrbmblocks; /* new number of rt bitmap blocks */ - xfs_rtblock_t nrextents; /* new number of realtime extents */ + xfs_rtxnum_t nrextents; /* new number of realtime extents */ uint8_t nrextslog; /* new log2 of sb_rextents */ xfs_extlen_t nrsumblocks; /* new number of summary blocks */ uint nrsumlevels; /* new rt summary levels */ @@ -1196,17 +1196,17 @@ out_free: int /* error */ xfs_rtallocate_extent( xfs_trans_t *tp, /* transaction pointer */ - xfs_rtblock_t bno, /* starting block number to allocate */ + xfs_rtxnum_t start, /* starting rtext number to allocate */ xfs_rtxlen_t minlen, /* minimum length to allocate */ xfs_rtxlen_t maxlen, /* maximum length to allocate */ xfs_rtxlen_t *len, /* out: actual length allocated */ int wasdel, /* was a delayed allocation extent */ xfs_rtxlen_t prod, /* extent product factor */ - xfs_rtblock_t *rtblock) /* out: start block allocated */ + xfs_rtxnum_t *rtblock) /* out: start rtext allocated */ { xfs_mount_t *mp = tp->t_mountp; int error; /* error value */ - xfs_rtblock_t r; /* result allocated block */ + xfs_rtxnum_t r; /* result allocated rtext */ xfs_fileoff_t sb; /* summary file block number */ struct xfs_buf *sumbp; /* summary file block buffer */ @@ -1224,18 +1224,18 @@ xfs_rtallocate_extent( if ((i = minlen % prod)) minlen += prod - i; if (maxlen < minlen) { - *rtblock = NULLRTBLOCK; + *rtblock = NULLRTEXTNO; return 0; } } retry: sumbp = NULL; - if (bno == 0) { + if (start == 0) { error = xfs_rtallocate_extent_size(mp, tp, minlen, maxlen, len, &sumbp, &sb, prod, &r); } else { - error = xfs_rtallocate_extent_near(mp, tp, bno, minlen, maxlen, + error = xfs_rtallocate_extent_near(mp, tp, start, minlen, maxlen, len, &sumbp, &sb, prod, &r); } @@ -1245,7 +1245,7 @@ retry: /* * If it worked, update the superblock. */ - if (r != NULLRTBLOCK) { + if (r != NULLRTEXTNO) { long slen = (long)*len; ASSERT(*len >= minlen && *len <= maxlen); @@ -1445,9 +1445,9 @@ xfs_rtpick_extent( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ xfs_rtxlen_t len, /* allocation length (rtextents) */ - xfs_rtblock_t *pick) /* result rt extent */ + xfs_rtxnum_t *pick) /* result rt extent */ { - xfs_rtblock_t b; /* result block */ + xfs_rtxnum_t b; /* result rtext */ int log2; /* log of sequence number */ uint64_t resid; /* residual after log removed */ uint64_t seq; /* sequence number of file creation */ |