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xfs: remove xfs_bmalloca firstblock field 

The xfs_bmalloca.firstblock field carries the firstblock value from
the transaction into the bmap infrastructure. It's initialized in
one place from ->t_firstblock, so drop the field and access
->t_firstblock directly throughout the bmap code.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2018-07-11 22:26:28 -07:00 committed by Darrick J. Wong
parent 4b77a088d7
commit 94c07b4dba
2 changed files with 23 additions and 22 deletions
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44
fs/xfs/libxfs/xfs_bmap.c
View File

@ -1794,7 +1794,7 @@ xfs_bmap_add_extent_delay_real(
if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
bma->firstblock, &bma->cur, 1,
&bma->tp->t_firstblock, &bma->cur, 1,
&tmp_rval, whichfork);
rval |= tmp_rval;
if (error)
@ -1872,7 +1872,7 @@ xfs_bmap_add_extent_delay_real(
if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
bma->firstblock, &bma->cur, 1, &tmp_rval,
&bma->tp->t_firstblock, &bma->cur, 1, &tmp_rval,
whichfork);
rval |= tmp_rval;
if (error)
@ -1953,7 +1953,7 @@ xfs_bmap_add_extent_delay_real(
if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
bma->firstblock, &bma->cur, 1,
&bma->tp->t_firstblock, &bma->cur, 1,
&tmp_rval, whichfork);
rval |= tmp_rval;
if (error)
@ -1991,7 +1991,7 @@ xfs_bmap_add_extent_delay_real(
ASSERT(bma->cur == NULL);
error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
bma->firstblock, &bma->cur, da_old > 0,
&bma->tp->t_firstblock, &bma->cur, da_old > 0,
&tmp_logflags, whichfork);
bma->logflags |= tmp_logflags;
if (error)
@ -3056,10 +3056,11 @@ xfs_bmap_adjacent(
XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks)
mp = ap->ip->i_mount;
nullfb = *ap->firstblock == NULLFSBLOCK;
nullfb = ap->tp->t_firstblock == NULLFSBLOCK;
rt = XFS_IS_REALTIME_INODE(ap->ip) &&
xfs_alloc_is_userdata(ap->datatype);
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock);
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp,
ap->tp->t_firstblock);
/*
* If allocating at eof, and there's a previous real block,
* try to use its last block as our starting point.
@ -3417,8 +3418,9 @@ xfs_bmap_btalloc(
}
nullfb = *ap->firstblock == NULLFSBLOCK;
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock);
nullfb = ap->tp->t_firstblock == NULLFSBLOCK;
fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp,
ap->tp->t_firstblock);
if (nullfb) {
if (xfs_alloc_is_userdata(ap->datatype) &&
xfs_inode_is_filestream(ap->ip)) {
@ -3429,7 +3431,7 @@ xfs_bmap_btalloc(
ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino);
}
} else
ap->blkno = *ap->firstblock;
ap->blkno = ap->tp->t_firstblock;
xfs_bmap_adjacent(ap);
@ -3440,7 +3442,7 @@ xfs_bmap_btalloc(
if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno)
;
else
ap->blkno = *ap->firstblock;
ap->blkno = ap->tp->t_firstblock;
/*
* Normal allocation, done through xfs_alloc_vextent.
*/
@ -3453,7 +3455,7 @@ xfs_bmap_btalloc(
/* Trim the allocation back to the maximum an AG can fit. */
args.maxlen = min(ap->length, mp->m_ag_max_usable);
args.firstblock = *ap->firstblock;
args.firstblock = ap->tp->t_firstblock;
blen = 0;
if (nullfb) {
/*
@ -3602,13 +3604,13 @@ xfs_bmap_btalloc(
* check the allocation happened at the same or higher AG than
* the first block that was allocated.
*/
ASSERT(*ap->firstblock == NULLFSBLOCK ||
XFS_FSB_TO_AGNO(mp, *ap->firstblock) <=
ASSERT(ap->tp->t_firstblock == NULLFSBLOCK ||
XFS_FSB_TO_AGNO(mp, ap->tp->t_firstblock) <=
XFS_FSB_TO_AGNO(mp, args.fsbno));
ap->blkno = args.fsbno;
if (*ap->firstblock == NULLFSBLOCK)
*ap->firstblock = args.fsbno;
if (ap->tp->t_firstblock == NULLFSBLOCK)
ap->tp->t_firstblock = args.fsbno;
ASSERT(nullfb || fb_agno <= args.agno);
ap->length = args.len;
/*
@ -4064,12 +4066,12 @@ xfs_bmapi_allocate(
return error;
if (bma->cur)
bma->cur->bc_private.b.firstblock = *bma->firstblock;
bma->cur->bc_private.b.firstblock = bma->tp->t_firstblock;
if (bma->blkno == NULLFSBLOCK)
return 0;
if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) {
bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork);
bma->cur->bc_private.b.firstblock = *bma->firstblock;
bma->cur->bc_private.b.firstblock = bma->tp->t_firstblock;
}
/*
* Bump the number of extents we've allocated
@ -4105,7 +4107,8 @@ xfs_bmapi_allocate(
else
error = xfs_bmap_add_extent_hole_real(bma->tp, bma->ip,
whichfork, &bma->icur, &bma->cur, &bma->got,
bma->firstblock, &bma->logflags, bma->flags);
&bma->tp->t_firstblock, &bma->logflags,
bma->flags);
bma->logflags |= tmp_logflags;
if (error)
@ -4156,7 +4159,7 @@ xfs_bmapi_convert_unwritten(
if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) {
bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp,
bma->ip, whichfork);
bma->cur->bc_private.b.firstblock = *bma->firstblock;
bma->cur->bc_private.b.firstblock = bma->tp->t_firstblock;
}
mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN)
? XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
@ -4173,7 +4176,7 @@ xfs_bmapi_convert_unwritten(
}
error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, whichfork,
&bma->icur, &bma->cur, mval, bma->firstblock,
&bma->icur, &bma->cur, mval, &bma->tp->t_firstblock,
&tmp_logflags);
/*
* Log the inode core unconditionally in the unwritten extent conversion
@ -4313,7 +4316,6 @@ xfs_bmapi_write(
bma.ip = ip;
bma.total = total;
bma.datatype = 0;
bma.firstblock = &tp->t_firstblock;
ASSERT(!tp || tp->t_dfops);
while (bno < end && n < *nmap) {

1
fs/xfs/libxfs/xfs_bmap.h
View File

@ -19,7 +19,6 @@ extern kmem_zone_t *xfs_bmap_free_item_zone;
* Argument structure for xfs_bmap_alloc.
*/
struct xfs_bmalloca {
xfs_fsblock_t *firstblock; /* i/o first block allocated */
struct xfs_trans *tp; /* transaction pointer */
struct xfs_inode *ip; /* incore inode pointer */
struct xfs_bmbt_irec prev; /* extent before the new one */