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xfs: factor out a xfs_rtallocate helper

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Split out a helper from xfs_rtallocate that performs the actual
allocation.  This keeps the scope of the xfs_rtalloc_args structure
contained, and prepares for rtgroups support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-08-30 15:37:10 -07:00 committed by Darrick J. Wong
parent 1e21d1897f
commit a9f646af43
1 changed files with 50 additions and 31 deletions
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81
fs/xfs/xfs_rtalloc.c
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@ -1263,6 +1263,51 @@ xfs_rtalloc_align_minmax(
*raminlen = newminlen;
}
static int
xfs_rtallocate(
struct xfs_trans *tp,
xfs_rtxnum_t start,
xfs_rtxlen_t minlen,
xfs_rtxlen_t maxlen,
xfs_rtxlen_t prod,
bool wasdel,
xfs_rtblock_t *bno,
xfs_extlen_t *blen)
{
struct xfs_rtalloc_args args = {
.mp = tp->t_mountp,
.tp = tp,
};
xfs_rtxnum_t rtx;
xfs_rtxlen_t len = 0;
int error;
if (start) {
error = xfs_rtallocate_extent_near(&args, start, minlen, maxlen,
&len, prod, &rtx);
} else {
error = xfs_rtallocate_extent_size(&args, minlen, maxlen, &len,
prod, &rtx);
}
if (error)
goto out_release;
error = xfs_rtallocate_range(&args, rtx, len);
if (error)
goto out_release;
xfs_trans_mod_sb(tp, wasdel ?
XFS_TRANS_SB_RES_FREXTENTS : XFS_TRANS_SB_FREXTENTS,
-(long)len);
*bno = xfs_rtx_to_rtb(args.mp, rtx);
*blen = xfs_rtxlen_to_extlen(args.mp, len);
out_release:
xfs_rtbuf_cache_relse(&args);
return error;
}
int
xfs_bmap_rtalloc(
struct xfs_bmalloca *ap)
@ -1270,7 +1315,6 @@ xfs_bmap_rtalloc(
struct xfs_mount *mp = ap->ip->i_mount;
xfs_fileoff_t orig_offset = ap->offset;
xfs_rtxnum_t start; /* allocation hint rtextent no */
xfs_rtxnum_t rtx; /* actually allocated rtextent no */
xfs_rtxlen_t prod = 0; /* product factor for allocators */
xfs_extlen_t mod = 0; /* product factor for allocators */
xfs_rtxlen_t ralen = 0; /* realtime allocation length */
@ -1280,10 +1324,6 @@ xfs_bmap_rtalloc(
xfs_rtxlen_t raminlen;
bool rtlocked = false;
bool ignore_locality = false;
struct xfs_rtalloc_args args = {
.mp = mp,
.tp = ap->tp,
};
int error;
align = xfs_get_extsz_hint(ap->ip);
@ -1357,19 +1397,9 @@ retry:
xfs_rtalloc_align_minmax(&raminlen, &ralen, &prod);
}
if (start) {
error = xfs_rtallocate_extent_near(&args, start, raminlen,
ralen, &ralen, prod, &rtx);
} else {
error = xfs_rtallocate_extent_size(&args, raminlen,
ralen, &ralen, prod, &rtx);
}
if (error) {
xfs_rtbuf_cache_relse(&args);
if (error != -ENOSPC)
return error;
error = xfs_rtallocate(ap->tp, start, raminlen, ralen, prod, ap->wasdel,
&ap->blkno, &ap->length);
if (error == -ENOSPC) {
if (align > mp->m_sb.sb_rextsize) {
/*
* We previously enlarged the request length to try to
@ -1397,20 +1427,9 @@ retry:
ap->length = 0;
return 0;
}
error = xfs_rtallocate_range(&args, rtx, ralen);
if (error)
goto out_release;
return error;
xfs_trans_mod_sb(ap->tp, ap->wasdel ?
XFS_TRANS_SB_RES_FREXTENTS : XFS_TRANS_SB_FREXTENTS,
-(long)ralen);
ap->blkno = xfs_rtx_to_rtb(mp, rtx);
ap->length = xfs_rtxlen_to_extlen(mp, ralen);
xfs_bmap_alloc_account(ap);
out_release:
xfs_rtbuf_cache_relse(&args);
return error;
return 0;
}