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xfs: make the rtalloc start hint a xfs_rtblock_t

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0 is a valid start RT extent, and with pending changes it will become
both more common and non-unique.  Switch to pass a xfs_rtblock_t instead
so that we can use NULLRTBLOCK to determine if a hint was set or not.

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 15:37:12 -07:00 committed by Darrick J. Wong
parent b2dd85f414
commit ec12f97f1b
1 changed files with 11 additions and 7 deletions
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18
fs/xfs/xfs_rtalloc.c
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@ -1266,7 +1266,7 @@ xfs_rtalloc_align_minmax(
static int
xfs_rtallocate(
struct xfs_trans *tp,
xfs_rtxnum_t start,
xfs_rtblock_t bno_hint,
xfs_rtxlen_t minlen,
xfs_rtxlen_t maxlen,
xfs_rtxlen_t prod,
@ -1280,6 +1280,7 @@ xfs_rtallocate(
.mp = tp->t_mountp,
.tp = tp,
};
xfs_rtxnum_t start = 0;
xfs_rtxnum_t rtx;
xfs_rtxlen_t len = 0;
int error = 0;
@ -1297,7 +1298,9 @@ xfs_rtallocate(
* For an allocation to an empty file at offset 0, pick an extent that
* will space things out in the rt area.
*/
if (!start && initial_user_data)
if (bno_hint)
start = xfs_rtb_to_rtx(args.mp, bno_hint);
else if (initial_user_data)
start = xfs_rtpick_extent(args.mp, tp, maxlen);
if (start) {
@ -1410,15 +1413,16 @@ int
xfs_bmap_rtalloc(
struct xfs_bmalloca *ap)
{
struct xfs_mount *mp = ap->ip->i_mount;
xfs_fileoff_t orig_offset = ap->offset;
xfs_rtxnum_t start = 0; /* allocation hint rtextent no */
xfs_rtxlen_t prod = 0; /* product factor for allocators */
xfs_rtxlen_t ralen = 0; /* realtime allocation length */
xfs_rtblock_t bno_hint = NULLRTBLOCK;
xfs_extlen_t orig_length = ap->length;
xfs_rtxlen_t raminlen;
bool rtlocked = false;
bool noalign = false;
bool initial_user_data =
ap->datatype & XFS_ALLOC_INITIAL_USER_DATA;
int error;
retry:
@ -1427,10 +1431,10 @@ retry:
return error;
if (xfs_bmap_adjacent(ap))
start = xfs_rtb_to_rtx(mp, ap->blkno);
bno_hint = ap->blkno;
error = xfs_rtallocate(ap->tp, start, raminlen, ralen, prod, ap->wasdel,
ap->datatype & XFS_ALLOC_INITIAL_USER_DATA, &rtlocked,
error = xfs_rtallocate(ap->tp, bno_hint, raminlen, ralen, prod,
ap->wasdel, initial_user_data, &rtlocked,
&ap->blkno, &ap->length);
if (error == -ENOSPC) {
if (!noalign) {