xfs: do not keep local copies of allocation ranges in xfs_bmapi_allocate (963c30cf) · Commits · e / devices / android_kernel_teracube_mt6765

fs/xfs/xfs_bmap.c

+14 −29

Original line number	Original line	Diff line number	Diff line
	@@ -4617,9 +4617,6 @@ xfs_bmapi_allocate(
	int whichfork = (flags & XFS_BMAPI_ATTRFORK) ?		int whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
	XFS_ATTR_FORK : XFS_DATA_FORK;		XFS_ATTR_FORK : XFS_DATA_FORK;
	struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork);		struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork);
	xfs_fsblock_t abno;
	xfs_extlen_t alen;
	xfs_fileoff_t aoff;
	int error;		int error;
	int rt;		int rt;

	@@ -4630,18 +4627,17 @@ xfs_bmapi_allocate(
	* for in this bmap call but that wouldn't be as good.		* for in this bmap call but that wouldn't be as good.
	*/		*/
	if (bma->wasdel) {		if (bma->wasdel) {
	alen = (xfs_extlen_t)bma->got.br_blockcount;		bma->length = (xfs_extlen_t)bma->got.br_blockcount;
	aoff = bma->got.br_startoff;		bma->offset = bma->got.br_startoff;
	if (lastx != NULLEXTNUM && lastx) {		if (lastx != NULLEXTNUM && lastx) {
	xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx - 1),		xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx - 1),
	&bma->prev);		&bma->prev);
	}		}
	} else {		} else {
	alen = (xfs_extlen_t)XFS_FILBLKS_MIN(bma->length, MAXEXTLEN);		bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN);
	if (!bma->eof)		if (!bma->eof)
	alen = (xfs_extlen_t)XFS_FILBLKS_MIN(alen,		bma->length = XFS_FILBLKS_MIN(bma->length,
	bma->got.br_startoff - bma->offset);		bma->got.br_startoff - bma->offset);
	aoff = bma->offset;
	}		}

	/*		/*
	@@ -4649,23 +4645,17 @@ xfs_bmapi_allocate(
	* user data.		* user data.
	*/		*/
	if (!(flags & XFS_BMAPI_METADATA)) {		if (!(flags & XFS_BMAPI_METADATA)) {
	bma->userdata = (aoff == 0) ?		bma->userdata = (bma->offset == 0) ?
	XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA;		XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA;
	}		}

	/*		bma->minlen = (flags & XFS_BMAPI_CONTIG) ? bma->length : 1;
	* Fill in changeable bma fields.
	*/
	bma->length = alen;
	bma->offset = aoff;
	bma->minlen = (flags & XFS_BMAPI_CONTIG) ? alen : 1;
	bma->aeof = 0;

	/*		/*
	* Only want to do the alignment at the eof if it is userdata and		* Only want to do the alignment at the eof if it is userdata and
	* allocation length is larger than a stripe unit.		* allocation length is larger than a stripe unit.
	*/		*/
	if (mp->m_dalign && alen >= mp->m_dalign &&		if (mp->m_dalign && bma->length >= mp->m_dalign &&
	!(flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) {		!(flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) {
	error = xfs_bmap_isaeof(bma, whichfork);		error = xfs_bmap_isaeof(bma, whichfork);
	if (error)		if (error)
	@@ -4676,17 +4666,11 @@ xfs_bmapi_allocate(
	if (error)		if (error)
	return error;		return error;

	/*
	* Copy out result fields.
	*/
	abno = bma->blkno;
	alen = bma->length;
	aoff = bma->offset;
	if (bma->flist->xbf_low)		if (bma->flist->xbf_low)
	bma->minleft = 0;		bma->minleft = 0;
	if (*cur)		if (*cur)
	(cur)->bc_private.b.firstblock = bma->firstblock;		(cur)->bc_private.b.firstblock = bma->firstblock;
	if (abno == NULLFSBLOCK)		if (bma->blkno == NULLFSBLOCK)
	return 0;		return 0;
	if ((ifp->if_flags & XFS_IFBROOT) && !*cur) {		if ((ifp->if_flags & XFS_IFBROOT) && !*cur) {
	(*cur) = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork);		(*cur) = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork);
	@@ -4703,9 +4687,9 @@ xfs_bmapi_allocate(
	(*cur)->bc_private.b.flags =		(*cur)->bc_private.b.flags =
	bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;		bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;

	bma->got.br_startoff = aoff;		bma->got.br_startoff = bma->offset;
	bma->got.br_startblock = abno;		bma->got.br_startblock = bma->blkno;
	bma->got.br_blockcount = alen;		bma->got.br_blockcount = bma->length;
	bma->got.br_state = XFS_EXT_NORM;		bma->got.br_state = XFS_EXT_NORM;

	/*		/*
	@@ -4736,8 +4720,9 @@ xfs_bmapi_allocate(
	*/		*/
	xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx), &bma->got);		xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx), &bma->got);

	ASSERT(bma->got.br_startoff <= aoff);		ASSERT(bma->got.br_startoff <= bma->offset);
	ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= aoff + alen);		ASSERT(bma->got.br_startoff + bma->got.br_blockcount >=
			bma->offset + bma->length);
	ASSERT(bma->got.br_state == XFS_EXT_NORM \|\|		ASSERT(bma->got.br_state == XFS_EXT_NORM \|\|
	bma->got.br_state == XFS_EXT_UNWRITTEN);		bma->got.br_state == XFS_EXT_UNWRITTEN);
	return 0;		return 0;