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xfs: rename allocation range fields in struct xfs_bmalloca 

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Dave Chinner 2011-09-18 20:40:58 +00:00 committed by Alex Elder
parent 0937e0fd8b
commit 3a75667e90
3 changed files with 75 additions and 73 deletions
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138
fs/xfs/xfs_bmap.c
View File

@ -2017,15 +2017,15 @@ xfs_bmap_adjacent(
!isnullstartblock(ap->prev.br_startblock) &&
ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount,
ap->prev.br_startblock)) {
ap->rval = ap->prev.br_startblock + ap->prev.br_blockcount;
ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount;
/*
* Adjust for the gap between prevp and us.
*/
adjust = ap->off -
adjust = ap->offset -
(ap->prev.br_startoff + ap->prev.br_blockcount);
if (adjust &&
ISVALID(ap->rval + adjust, ap->prev.br_startblock))
ap->rval += adjust;
ISVALID(ap->blkno + adjust, ap->prev.br_startblock))
ap->blkno += adjust;
}
/*
* If not at eof, then compare the two neighbor blocks.
@ -2050,7 +2050,7 @@ xfs_bmap_adjacent(
/*
* Calculate gap to end of previous block.
*/
adjust = prevdiff = ap->off -
adjust = prevdiff = ap->offset -
(ap->prev.br_startoff +
ap->prev.br_blockcount);
/*
@ -2061,7 +2061,7 @@ xfs_bmap_adjacent(
* allocating, or using it gives us an invalid block
* number, then just use the end of the previous block.
*/
if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->alen &&
if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length &&
ISVALID(prevbno + prevdiff,
ap->prev.br_startblock))
prevbno += adjust;
@ -2088,7 +2088,7 @@ xfs_bmap_adjacent(
/*
* Calculate gap to start of next block.
*/
adjust = gotdiff = ap->got.br_startoff - ap->off;
adjust = gotdiff = ap->got.br_startoff - ap->offset;
/*
* Figure the startblock based on the next block's
* start and the gap size.
@ -2101,12 +2101,12 @@ xfs_bmap_adjacent(
* number, then just use the start of the next block
* offset by our length.
*/
if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->alen &&
if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length &&
ISVALID(gotbno - gotdiff, gotbno))
gotbno -= adjust;
else if (ISVALID(gotbno - ap->alen, gotbno)) {
gotbno -= ap->alen;
gotdiff += adjust - ap->alen;
else if (ISVALID(gotbno - ap->length, gotbno)) {
gotbno -= ap->length;
gotdiff += adjust - ap->length;
} else
gotdiff += adjust;
/*
@ -2124,14 +2124,14 @@ xfs_bmap_adjacent(
gotbno = NULLFSBLOCK;
/*
* If both valid, pick the better one, else the only good
* one, else ap->rval is already set (to 0 or the inode block).
* one, else ap->blkno is already set (to 0 or the inode block).
*/
if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK)
ap->rval = prevdiff <= gotdiff ? prevbno : gotbno;
ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno;
else if (prevbno != NULLFSBLOCK)
ap->rval = prevbno;
ap->blkno = prevbno;
else if (gotbno != NULLFSBLOCK)
ap->rval = gotbno;
ap->blkno = gotbno;
}
#undef ISVALID
}
@ -2153,22 +2153,22 @@ xfs_bmap_rtalloc(
prod = align / mp->m_sb.sb_rextsize;
error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
align, 1, ap->eof, 0,
ap->conv, &ap->off, &ap->alen);
ap->conv, &ap->offset, &ap->length);
if (error)
return error;
ASSERT(ap->alen);
ASSERT(ap->alen % mp->m_sb.sb_rextsize == 0);
ASSERT(ap->length);
ASSERT(ap->length % mp->m_sb.sb_rextsize == 0);
/*
* If the offset & length are not perfectly aligned
* then kill prod, it will just get us in trouble.
*/
if (do_mod(ap->off, align) || ap->alen % align)
if (do_mod(ap->offset, align) || ap->length % align)
prod = 1;
/*
* Set ralen to be the actual requested length in rtextents.
*/
ralen = ap->alen / mp->m_sb.sb_rextsize;
ralen = ap->length / mp->m_sb.sb_rextsize;
/*
* If the old value was close enough to MAXEXTLEN that
* we rounded up to it, cut it back so it's valid again.
@ -2189,15 +2189,15 @@ xfs_bmap_rtalloc(
* If it's an allocation to an empty file at offset 0,
* pick an extent that will space things out in the rt area.
*/
if (ap->eof && ap->off == 0) {
if (ap->eof && ap->offset == 0) {
xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */
error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
if (error)
return error;
ap->rval = rtx * mp->m_sb.sb_rextsize;
ap->blkno = rtx * mp->m_sb.sb_rextsize;
} else {
ap->rval = 0;
ap->blkno = 0;
}
xfs_bmap_adjacent(ap);
@ -2205,23 +2205,23 @@ xfs_bmap_rtalloc(
/*
* Realtime allocation, done through xfs_rtallocate_extent.
*/
atype = ap->rval == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO;
do_div(ap->rval, mp->m_sb.sb_rextsize);
rtb = ap->rval;
ap->alen = ralen;
if ((error = xfs_rtallocate_extent(ap->tp, ap->rval, 1, ap->alen,
atype = ap->blkno == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO;
do_div(ap->blkno, mp->m_sb.sb_rextsize);
rtb = ap->blkno;
ap->length = ralen;
if ((error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, ap->length,
&ralen, atype, ap->wasdel, prod, &rtb)))
return error;
if (rtb == NULLFSBLOCK && prod > 1 &&
(error = xfs_rtallocate_extent(ap->tp, ap->rval, 1,
ap->alen, &ralen, atype,
(error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1,
ap->length, &ralen, atype,
ap->wasdel, 1, &rtb)))
return error;
ap->rval = rtb;
if (ap->rval != NULLFSBLOCK) {
ap->rval *= mp->m_sb.sb_rextsize;
ap->blkno = rtb;
if (ap->blkno != NULLFSBLOCK) {
ap->blkno *= mp->m_sb.sb_rextsize;
ralen *= mp->m_sb.sb_rextsize;
ap->alen = ralen;
ap->length = ralen;
ap->ip->i_d.di_nblocks += ralen;
xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
if (ap->wasdel)
@ -2234,7 +2234,7 @@ xfs_bmap_rtalloc(
ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
XFS_TRANS_DQ_RTBCOUNT, (long) ralen);
} else {
ap->alen = 0;
ap->length = 0;
}
return 0;
}
@ -2349,7 +2349,7 @@ xfs_bmap_btalloc_nullfb(
* AG as the stream may have moved.
*/
if (xfs_inode_is_filestream(ap->ip))
ap->rval = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0);
ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0);
return 0;
}
@ -2376,9 +2376,9 @@ xfs_bmap_btalloc(
if (unlikely(align)) {
error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
align, 0, ap->eof, 0, ap->conv,
&ap->off, &ap->alen);
&ap->offset, &ap->length);
ASSERT(!error);
ASSERT(ap->alen);
ASSERT(ap->length);
}
nullfb = *ap->firstblock == NULLFSBLOCK;
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock);
@ -2386,33 +2386,33 @@ xfs_bmap_btalloc(
if (ap->userdata && xfs_inode_is_filestream(ap->ip)) {
ag = xfs_filestream_lookup_ag(ap->ip);
ag = (ag != NULLAGNUMBER) ? ag : 0;
ap->rval = XFS_AGB_TO_FSB(mp, ag, 0);
ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0);
} else {
ap->rval = XFS_INO_TO_FSB(mp, ap->ip->i_ino);
ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino);
}
} else
ap->rval = *ap->firstblock;
ap->blkno = *ap->firstblock;
xfs_bmap_adjacent(ap);
/*
* If allowed, use ap->rval; otherwise must use firstblock since
* If allowed, use ap->blkno; otherwise must use firstblock since
* it's in the right allocation group.
*/
if (nullfb || XFS_FSB_TO_AGNO(mp, ap->rval) == fb_agno)
if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno)
;
else
ap->rval = *ap->firstblock;
ap->blkno = *ap->firstblock;
/*
* Normal allocation, done through xfs_alloc_vextent.
*/
tryagain = isaligned = 0;
args.tp = ap->tp;
args.mp = mp;
args.fsbno = ap->rval;
args.fsbno = ap->blkno;
/* Trim the allocation back to the maximum an AG can fit. */
args.maxlen = MIN(ap->alen, XFS_ALLOC_AG_MAX_USABLE(mp));
args.maxlen = MIN(ap->length, XFS_ALLOC_AG_MAX_USABLE(mp));
args.firstblock = *ap->firstblock;
blen = 0;
if (nullfb) {
@ -2433,14 +2433,14 @@ xfs_bmap_btalloc(
/* apply extent size hints if obtained earlier */
if (unlikely(align)) {
args.prod = align;
if ((args.mod = (xfs_extlen_t)do_mod(ap->off, args.prod)))
if ((args.mod = (xfs_extlen_t)do_mod(ap->offset, args.prod)))
args.mod = (xfs_extlen_t)(args.prod - args.mod);
} else if (mp->m_sb.sb_blocksize >= PAGE_CACHE_SIZE) {
args.prod = 1;
args.mod = 0;
} else {
args.prod = PAGE_CACHE_SIZE >> mp->m_sb.sb_blocklog;
if ((args.mod = (xfs_extlen_t)(do_mod(ap->off, args.prod))))
if ((args.mod = (xfs_extlen_t)(do_mod(ap->offset, args.prod))))
args.mod = (xfs_extlen_t)(args.prod - args.mod);
}
/*
@ -2453,7 +2453,7 @@ xfs_bmap_btalloc(
* at the end of file.
*/
if (!ap->flist->xbf_low && ap->aeof) {
if (!ap->off) {
if (!ap->offset) {
args.alignment = mp->m_dalign;
atype = args.type;
isaligned = 1;
@ -2506,7 +2506,7 @@ xfs_bmap_btalloc(
* turned on.
*/
args.type = atype;
args.fsbno = ap->rval;
args.fsbno = ap->blkno;
args.alignment = mp->m_dalign;
args.minlen = nextminlen;
args.minalignslop = 0;
@ -2520,7 +2520,7 @@ xfs_bmap_btalloc(
* try again.
*/
args.type = atype;
args.fsbno = ap->rval;
args.fsbno = ap->blkno;
args.alignment = 0;
if ((error = xfs_alloc_vextent(&args)))
return error;
@ -2529,7 +2529,7 @@ xfs_bmap_btalloc(
args.minlen > ap->minlen) {
args.minlen = ap->minlen;
args.type = XFS_ALLOCTYPE_START_BNO;
args.fsbno = ap->rval;
args.fsbno = ap->blkno;
if ((error = xfs_alloc_vextent(&args)))
return error;
}
@ -2554,12 +2554,12 @@ xfs_bmap_btalloc(
XFS_FSB_TO_AGNO(mp, *ap->firstblock) <
XFS_FSB_TO_AGNO(mp, args.fsbno)));
ap->rval = args.fsbno;
ap->blkno = args.fsbno;
if (*ap->firstblock == NULLFSBLOCK)
*ap->firstblock = args.fsbno;
ASSERT(nullfb || fb_agno == args.agno ||
(ap->flist->xbf_low && fb_agno < args.agno));
ap->alen = args.len;
ap->length = args.len;
ap->ip->i_d.di_nblocks += args.len;
xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
if (ap->wasdel)
@ -2573,8 +2573,8 @@ xfs_bmap_btalloc(
XFS_TRANS_DQ_BCOUNT,
(long) args.len);
} else {
ap->rval = NULLFSBLOCK;
ap->alen = 0;
ap->blkno = NULLFSBLOCK;
ap->length = 0;
}
return 0;
}
@ -3902,8 +3902,8 @@ xfs_bmap_isaeof(
* Check if we are allocation or past the last extent, or at least into
* the last delayed allocated extent.
*/
bma->aeof = bma->off >= rec.br_startoff + rec.br_blockcount ||
(bma->off >= rec.br_startoff &&
bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount ||
(bma->offset >= rec.br_startoff &&
isnullstartblock(rec.br_startblock));
return 0;
}
@ -4637,11 +4637,11 @@ xfs_bmapi_allocate(
&bma->prev);
}
} else {
alen = (xfs_extlen_t)XFS_FILBLKS_MIN(bma->alen, MAXEXTLEN);
alen = (xfs_extlen_t)XFS_FILBLKS_MIN(bma->length, MAXEXTLEN);
if (!bma->eof)
alen = (xfs_extlen_t)XFS_FILBLKS_MIN(alen,
bma->got.br_startoff - bma->off);
aoff = bma->off;
bma->got.br_startoff - bma->offset);
aoff = bma->offset;
}
/*
@ -4656,8 +4656,8 @@ xfs_bmapi_allocate(
/*
* Fill in changeable bma fields.
*/
bma->alen = alen;
bma->off = aoff;
bma->length = alen;
bma->offset = aoff;
bma->minlen = (flags & XFS_BMAPI_CONTIG) ? alen : 1;
bma->aeof = 0;
@ -4679,9 +4679,9 @@ xfs_bmapi_allocate(
/*
* Copy out result fields.
*/
abno = bma->rval;
alen = bma->alen;
aoff = bma->off;
abno = bma->blkno;
alen = bma->length;
aoff = bma->offset;
if (bma->flist->xbf_low)
bma->minleft = 0;
if (*cur)
@ -4939,15 +4939,15 @@ xfs_bmapi_write(
bma.eof = eof;
bma.conv = !!(flags & XFS_BMAPI_CONVERT);
bma.wasdel = wasdelay;
bma.alen = len;
bma.off = bno;
bma.length = len;
bma.offset = bno;
error = xfs_bmapi_allocate(&bma, &lastx, &cur, flags,
&nallocs, &tmp_logflags);
logflags |= tmp_logflags;
if (error)
goto error0;
if (bma.rval == NULLFSBLOCK)
if (bma.blkno == NULLFSBLOCK)
break;
}

8
fs/xfs/xfs_bmap.h
View File

@ -111,13 +111,15 @@ static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp)
typedef struct xfs_bmalloca {
xfs_fsblock_t *firstblock; /* i/o first block allocated */
struct xfs_bmap_free *flist; /* bmap freelist */
xfs_fsblock_t rval; /* starting block of new extent */
xfs_fileoff_t off; /* offset in file filling in */
struct xfs_trans *tp; /* transaction pointer */
struct xfs_inode *ip; /* incore inode pointer */
struct xfs_bmbt_irec prev; /* extent before the new one */
struct xfs_bmbt_irec got; /* extent after, or delayed */
xfs_extlen_t alen; /* i/o length asked/allocated */
xfs_fileoff_t offset; /* offset in file filling in */
xfs_extlen_t length; /* i/o length asked/allocated */
xfs_fsblock_t blkno; /* starting block of new extent */
xfs_extlen_t total; /* total blocks needed for xaction */
xfs_extlen_t minlen; /* minimum allocation size (blocks) */
xfs_extlen_t minleft; /* amount must be left after alloc */

2
fs/xfs/xfs_filestream.c
View File

@ -682,7 +682,7 @@ xfs_filestream_new_ag(
ip = ap->ip;
mp = ip->i_mount;
cache = mp->m_filestream;
minlen = ap->alen;
minlen = ap->length;
*agp = NULLAGNUMBER;
/*