Re: [PATCH 09/23] xfs: push perags through the ag reservation callouts

Brian Foster
2021-05-26T12:34:19Z

On Wed, May 19, 2021 at 11:20:48AM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
>
> We currently pass an agno from the AG reservation functions to the
> individual feature accounting functions, which in future may have to
> do perag lookups to access per-AG state. Instead, pre-emptively
> plumb the perag through from the highest AG reservation layer to the
> feature callouts so they won't have to look it up again.
>
> Signed-off-by: Dave Chinner <dchinner@redhat.com>
> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
> ---

Commit log makes more sense now, thanks.

Reviewed-by: Brian Foster <bfoster@redhat.com>

> fs/xfs/libxfs/xfs_ag_resv.c | 9 ++++-----
> fs/xfs/libxfs/xfs_ialloc_btree.c | 17 +++++++++--------
> fs/xfs/libxfs/xfs_ialloc_btree.h | 2 +-
> fs/xfs/libxfs/xfs_refcount_btree.c | 7 +++----
> fs/xfs/libxfs/xfs_refcount_btree.h | 3 ++-
> fs/xfs/libxfs/xfs_rmap_btree.c | 6 +++---
> fs/xfs/libxfs/xfs_rmap_btree.h | 2 +-
> 7 files changed, 23 insertions(+), 23 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_ag_resv.c b/fs/xfs/libxfs/xfs_ag_resv.c
> index 2e3dcdfd4984..f7394a8ecf6b 100644
> --- a/fs/xfs/libxfs/xfs_ag_resv.c
> +++ b/fs/xfs/libxfs/xfs_ag_resv.c
> @@ -250,7 +250,6 @@ xfs_ag_resv_init(
> struct xfs_trans *tp)
> {
> struct xfs_mount *mp = pag->pag_mount;
> - xfs_agnumber_t agno = pag->pag_agno;
> xfs_extlen_t ask;
> xfs_extlen_t used;
> int error = 0, error2;
> @@ -260,11 +259,11 @@ xfs_ag_resv_init(
> if (pag->pag_meta_resv.ar_asked == 0) {
> ask = used = 0;
>
> - error = xfs_refcountbt_calc_reserves(mp, tp, agno, &ask, &used);
> + error = xfs_refcountbt_calc_reserves(mp, tp, pag, &ask, &used);
> if (error)
> goto out;
>
> - error = xfs_finobt_calc_reserves(mp, tp, agno, &ask, &used);
> + error = xfs_finobt_calc_reserves(mp, tp, pag, &ask, &used);
> if (error)
> goto out;
>
> @@ -282,7 +281,7 @@ xfs_ag_resv_init(
>
> mp->m_finobt_nores = true;
>
> - error = xfs_refcountbt_calc_reserves(mp, tp, agno, &ask,
> + error = xfs_refcountbt_calc_reserves(mp, tp, pag, &ask,
> &used);
> if (error)
> goto out;
> @@ -300,7 +299,7 @@ xfs_ag_resv_init(
> if (pag->pag_rmapbt_resv.ar_asked == 0) {
> ask = used = 0;
>
> - error = xfs_rmapbt_calc_reserves(mp, tp, agno, &ask, &used);
> + error = xfs_rmapbt_calc_reserves(mp, tp, pag, &ask, &used);
> if (error)
> goto out;
>
> diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
> index 4c5831646bd9..4ec8ea1331a5 100644
> --- a/fs/xfs/libxfs/xfs_ialloc_btree.c
> +++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
> @@ -20,6 +20,7 @@
> #include "xfs_trace.h"
> #include "xfs_trans.h"
> #include "xfs_rmap.h"
> +#include "xfs_ag.h"
>
> STATIC int
> xfs_inobt_get_minrecs(
> @@ -680,7 +681,7 @@ static int
> xfs_inobt_count_blocks(
> struct xfs_mount *mp,
> struct xfs_trans *tp,
> - xfs_agnumber_t agno,
> + struct xfs_perag *pag,
> xfs_btnum_t btnum,
> xfs_extlen_t *tree_blocks)
> {
> @@ -688,7 +689,7 @@ xfs_inobt_count_blocks(
> struct xfs_btree_cur *cur = NULL;
> int error;
>
> - error = xfs_inobt_cur(mp, tp, agno, btnum, &cur, &agbp);
> + error = xfs_inobt_cur(mp, tp, pag->pag_agno, btnum, &cur, &agbp);
> if (error)
> return error;
>
> @@ -704,14 +705,14 @@ static int
> xfs_finobt_read_blocks(
> struct xfs_mount *mp,
> struct xfs_trans *tp,
> - xfs_agnumber_t agno,
> + struct xfs_perag *pag,
> xfs_extlen_t *tree_blocks)
> {
> struct xfs_buf *agbp;
> struct xfs_agi *agi;
> int error;
>
> - error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
> + error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, &agbp);
> if (error)
> return error;
>
> @@ -728,7 +729,7 @@ int
> xfs_finobt_calc_reserves(
> struct xfs_mount *mp,
> struct xfs_trans *tp,
> - xfs_agnumber_t agno,
> + struct xfs_perag *pag,
> xfs_extlen_t *ask,
> xfs_extlen_t *used)
> {
> @@ -739,14 +740,14 @@ xfs_finobt_calc_reserves(
> return 0;
>
> if (xfs_sb_version_hasinobtcounts(&mp->m_sb))
> - error = xfs_finobt_read_blocks(mp, tp, agno, &tree_len);
> + error = xfs_finobt_read_blocks(mp, tp, pag, &tree_len);
> else
> - error = xfs_inobt_count_blocks(mp, tp, agno, XFS_BTNUM_FINO,
> + error = xfs_inobt_count_blocks(mp, tp, pag, XFS_BTNUM_FINO,
> &tree_len);
> if (error)
> return error;
>
> - *ask += xfs_inobt_max_size(mp, agno);
> + *ask += xfs_inobt_max_size(mp, pag->pag_agno);
> *used += tree_len;
> return 0;
> }
> diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.h b/fs/xfs/libxfs/xfs_ialloc_btree.h
> index 35bbd978c272..d5afe01fb2de 100644
> --- a/fs/xfs/libxfs/xfs_ialloc_btree.h
> +++ b/fs/xfs/libxfs/xfs_ialloc_btree.h
> @@ -64,7 +64,7 @@ int xfs_inobt_rec_check_count(struct xfs_mount *,
> #endif /* DEBUG */
>
> int xfs_finobt_calc_reserves(struct xfs_mount *mp, struct xfs_trans *tp,
> - xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used);
> + struct xfs_perag *pag, xfs_extlen_t *ask, xfs_extlen_t *used);
> extern xfs_extlen_t xfs_iallocbt_calc_size(struct xfs_mount *mp,
> unsigned long long len);
> int xfs_inobt_cur(struct xfs_mount *mp, struct xfs_trans *tp,
> diff --git a/fs/xfs/libxfs/xfs_refcount_btree.c b/fs/xfs/libxfs/xfs_refcount_btree.c
> index b281f0c674f5..c4ddf9ded00b 100644
> --- a/fs/xfs/libxfs/xfs_refcount_btree.c
> +++ b/fs/xfs/libxfs/xfs_refcount_btree.c
> @@ -450,7 +450,7 @@ int
> xfs_refcountbt_calc_reserves(
> struct xfs_mount *mp,
> struct xfs_trans *tp,
> - xfs_agnumber_t agno,
> + struct xfs_perag *pag,
> xfs_extlen_t *ask,
> xfs_extlen_t *used)
> {
> @@ -463,8 +463,7 @@ xfs_refcountbt_calc_reserves(
> if (!xfs_sb_version_hasreflink(&mp->m_sb))
> return 0;
>
> -
> - error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
> + error = xfs_alloc_read_agf(mp, tp, pag->pag_agno, 0, &agbp);
> if (error)
> return error;
>
> @@ -479,7 +478,7 @@ xfs_refcountbt_calc_reserves(
> * expansion. We therefore can pretend the space isn't there.
> */
> if (mp->m_sb.sb_logstart &&
> - XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == agno)
> + XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == pag->pag_agno)
> agblocks -= mp->m_sb.sb_logblocks;
>
> *ask += xfs_refcountbt_max_size(mp, agblocks);
> diff --git a/fs/xfs/libxfs/xfs_refcount_btree.h b/fs/xfs/libxfs/xfs_refcount_btree.h
> index 69dc515db671..eab1b0c672c0 100644
> --- a/fs/xfs/libxfs/xfs_refcount_btree.h
> +++ b/fs/xfs/libxfs/xfs_refcount_btree.h
> @@ -13,6 +13,7 @@
> struct xfs_buf;
> struct xfs_btree_cur;
> struct xfs_mount;
> +struct xfs_perag;
> struct xbtree_afakeroot;
>
> /*
> @@ -58,7 +59,7 @@ extern xfs_extlen_t xfs_refcountbt_max_size(struct xfs_mount *mp,
> xfs_agblock_t agblocks);
>
> extern int xfs_refcountbt_calc_reserves(struct xfs_mount *mp,
> - struct xfs_trans *tp, xfs_agnumber_t agno, xfs_extlen_t *ask,
> + struct xfs_trans *tp, struct xfs_perag *pag, xfs_extlen_t *ask,
> xfs_extlen_t *used);
>
> void xfs_refcountbt_commit_staged_btree(struct xfs_btree_cur *cur,
> diff --git a/fs/xfs/libxfs/xfs_rmap_btree.c b/fs/xfs/libxfs/xfs_rmap_btree.c
> index 46a5295ecf35..ba2f7064451b 100644
> --- a/fs/xfs/libxfs/xfs_rmap_btree.c
> +++ b/fs/xfs/libxfs/xfs_rmap_btree.c
> @@ -595,7 +595,7 @@ int
> xfs_rmapbt_calc_reserves(
> struct xfs_mount *mp,
> struct xfs_trans *tp,
> - xfs_agnumber_t agno,
> + struct xfs_perag *pag,
> xfs_extlen_t *ask,
> xfs_extlen_t *used)
> {
> @@ -608,7 +608,7 @@ xfs_rmapbt_calc_reserves(
> if (!xfs_sb_version_hasrmapbt(&mp->m_sb))
> return 0;
>
> - error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
> + error = xfs_alloc_read_agf(mp, tp, pag->pag_agno, 0, &agbp);
> if (error)
> return error;
>
> @@ -623,7 +623,7 @@ xfs_rmapbt_calc_reserves(
> * expansion. We therefore can pretend the space isn't there.
> */
> if (mp->m_sb.sb_logstart &&
> - XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == agno)
> + XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == pag->pag_agno)
> agblocks -= mp->m_sb.sb_logblocks;
>
> /* Reserve 1% of the AG or enough for 1 block per record. */
> diff --git a/fs/xfs/libxfs/xfs_rmap_btree.h b/fs/xfs/libxfs/xfs_rmap_btree.h
> index 115c3455a734..57fab72e26ad 100644
> --- a/fs/xfs/libxfs/xfs_rmap_btree.h
> +++ b/fs/xfs/libxfs/xfs_rmap_btree.h
> @@ -57,6 +57,6 @@ extern xfs_extlen_t xfs_rmapbt_max_size(struct xfs_mount *mp,
> xfs_agblock_t agblocks);
>
> extern int xfs_rmapbt_calc_reserves(struct xfs_mount *mp, struct xfs_trans *tp,
> - xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used);
> + struct xfs_perag *pag, xfs_extlen_t *ask, xfs_extlen_t *used);
>
> #endif /* __XFS_RMAP_BTREE_H__ */
> --
> 2.31.1
>