Re: [PATCH 13/17] xfs: pass a struct xfs_bmbt_irec to xfs_bmbt_update

Brian Foster
2017-09-08T17:19:06Z

On Sun, Sep 03, 2017 at 09:29:52AM +0200, Christoph Hellwig wrote:
> Now that we've massaged the callers into the right form we can always
> pass the actual extent record instead of the individual fields.
>
> With that xfs_bmbt_disk_set_allf can go away, and xfs_bmbt_disk_set_all
> can be merged into the former implementation of xfs_bmbt_disk_set_allf.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---

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

> fs/xfs/libxfs/xfs_bmap.c | 114 +++++++++++------------------------------
> fs/xfs/libxfs/xfs_bmap_btree.c | 42 +++++----------
> fs/xfs/libxfs/xfs_bmap_btree.h | 4 +-
> 3 files changed, 44 insertions(+), 116 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index bc41fc18cceb..9d1e66c708f9 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -161,21 +161,17 @@ static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork)
> }
>
> /*
> - * Update the record referred to by cur to the value given
> - * by [off, bno, len, state].
> + * Update the record referred to by cur to the value given by irec
> * This either works (return 0) or gets an EFSCORRUPTED error.
> */
> STATIC int
> xfs_bmbt_update(
> struct xfs_btree_cur *cur,
> - xfs_fileoff_t off,
> - xfs_fsblock_t bno,
> - xfs_filblks_t len,
> - xfs_exntst_t state)
> + struct xfs_bmbt_irec *irec)
> {
> union xfs_btree_rec rec;
>
> - xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state);
> + xfs_bmbt_disk_set_all(&rec.bmbt, irec);
> return xfs_btree_update(cur, &rec);
> }
>
> @@ -1729,9 +1725,7 @@ xfs_bmap_add_extent_delay_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
> - LEFT.br_startblock,
> - LEFT.br_blockcount, LEFT.br_state);
> + error = xfs_bmbt_update(bma->cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -1761,9 +1755,7 @@ xfs_bmap_add_extent_delay_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
> - LEFT.br_startblock,
> - LEFT.br_blockcount, LEFT.br_state);
> + error = xfs_bmbt_update(bma->cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -1791,9 +1783,7 @@ xfs_bmap_add_extent_delay_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(bma->cur, PREV.br_startoff,
> - PREV.br_startblock,
> - PREV.br_blockcount, PREV.br_state);
> + error = xfs_bmbt_update(bma->cur, &PREV);
> if (error)
> goto done;
> }
> @@ -1852,9 +1842,7 @@ xfs_bmap_add_extent_delay_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
> - LEFT.br_startblock, LEFT.br_blockcount,
> - LEFT.br_state);
> + error = xfs_bmbt_update(bma->cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -1942,9 +1930,7 @@ xfs_bmap_add_extent_delay_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(bma->cur, new->br_startoff,
> - new->br_startblock, new->br_blockcount,
> - new->br_state);
> + error = xfs_bmbt_update(bma->cur, new);
> if (error)
> goto done;
> }
> @@ -2304,9 +2290,7 @@ xfs_bmap_add_extent_unwritten_real(
> if ((error = xfs_btree_decrement(cur, 0, &i)))
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, LEFT.br_startoff,
> - LEFT.br_startblock, LEFT.br_blockcount,
> - LEFT.br_state);
> + error = xfs_bmbt_update(cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -2342,9 +2326,7 @@ xfs_bmap_add_extent_unwritten_real(
> if ((error = xfs_btree_decrement(cur, 0, &i)))
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, LEFT.br_startoff,
> - LEFT.br_startblock, LEFT.br_blockcount,
> - LEFT.br_state);
> + error = xfs_bmbt_update(cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -2379,9 +2361,7 @@ xfs_bmap_add_extent_unwritten_real(
> if ((error = xfs_btree_decrement(cur, 0, &i)))
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> }
> @@ -2407,9 +2387,7 @@ xfs_bmap_add_extent_unwritten_real(
> &i)))
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> }
> @@ -2445,17 +2423,13 @@ xfs_bmap_add_extent_unwritten_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> error = xfs_btree_decrement(cur, 0, &i);
> if (error)
> goto done;
> - error = xfs_bmbt_update(cur, LEFT.br_startoff,
> - LEFT.br_startblock, LEFT.br_blockcount,
> - LEFT.br_state);
> + error = xfs_bmbt_update(cur, &LEFT);
> if (error)
> goto done;
> }
> @@ -2487,9 +2461,7 @@ xfs_bmap_add_extent_unwritten_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> cur->bc_rec.b = *new;
> @@ -2529,17 +2501,13 @@ xfs_bmap_add_extent_unwritten_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> error = xfs_btree_increment(cur, 0, &i);
> if (error)
> goto done;
> - error = xfs_bmbt_update(cur, RIGHT.br_startoff,
> - RIGHT.br_startblock,
> - RIGHT.br_blockcount, RIGHT.br_state);
> + error = xfs_bmbt_update(cur, &RIGHT);
> if (error)
> goto done;
> }
> @@ -2571,9 +2539,7 @@ xfs_bmap_add_extent_unwritten_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, PREV.br_startoff,
> - PREV.br_startblock, PREV.br_blockcount,
> - PREV.br_state);
> + error = xfs_bmbt_update(cur, &PREV);
> if (error)
> goto done;
> if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
> @@ -2623,9 +2589,8 @@ xfs_bmap_add_extent_unwritten_real(
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> /* new right extent - oldext */
> - if ((error = xfs_bmbt_update(cur, r[1].br_startoff,
> - r[1].br_startblock, r[1].br_blockcount,
> - r[1].br_state)))
> + error = xfs_bmbt_update(cur, &r[1]);
> + if (error)
> goto done;
> /* new left extent - oldext */
> cur->bc_rec.b = PREV;
> @@ -2966,9 +2931,7 @@ xfs_bmap_add_extent_hole_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, left.br_startoff,
> - left.br_startblock,
> - left.br_blockcount, left.br_state);
> + error = xfs_bmbt_update(cur, &left);
> if (error)
> goto done;
> }
> @@ -2997,9 +2960,7 @@ xfs_bmap_add_extent_hole_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, left.br_startoff,
> - left.br_startblock,
> - left.br_blockcount, left.br_state);
> + error = xfs_bmbt_update(cur, &left);
> if (error)
> goto done;
> }
> @@ -3029,9 +2990,7 @@ xfs_bmap_add_extent_hole_real(
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, right.br_startoff,
> - right.br_startblock,
> - right.br_blockcount, right.br_state);
> + error = xfs_bmbt_update(cur, &right);
> if (error)
> goto done;
> }
> @@ -5204,8 +5163,7 @@ xfs_bmap_del_extent_real(
> flags |= xfs_ilog_fext(whichfork);
> break;
> }
> - error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock,
> - got.br_blockcount, got.br_state);
> + error = xfs_bmbt_update(cur, &got);
> if (error)
> goto done;
> break;
> @@ -5221,8 +5179,7 @@ xfs_bmap_del_extent_real(
> flags |= xfs_ilog_fext(whichfork);
> break;
> }
> - error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock,
> - got.br_blockcount, got.br_state);
> + error = xfs_bmbt_update(cur, &got);
> if (error)
> goto done;
> break;
> @@ -5243,9 +5200,7 @@ xfs_bmap_del_extent_real(
>
> flags |= XFS_ILOG_CORE;
> if (cur) {
> - error = xfs_bmbt_update(cur, got.br_startoff,
> - got.br_startblock, got.br_blockcount,
> - got.br_state);
> + error = xfs_bmbt_update(cur, &got);
> if (error)
> goto done;
> error = xfs_btree_increment(cur, 0, &i);
> @@ -5275,10 +5230,7 @@ xfs_bmap_del_extent_real(
> * Update the btree record back
> * to the original value.
> */
> - error = xfs_bmbt_update(cur, old.br_startoff,
> - old.br_startblock,
> - old.br_blockcount,
> - old.br_state);
> + error = xfs_bmbt_update(cur, &old);
> if (error)
> goto done;
> /*
> @@ -5816,8 +5768,7 @@ xfs_bmse_merge(
> return error;
> XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
>
> - error = xfs_bmbt_update(cur, new.br_startoff, new.br_startblock,
> - new.br_blockcount, new.br_state);
> + error = xfs_bmbt_update(cur, &new);
> if (error)
> return error;
>
> @@ -5934,9 +5885,7 @@ xfs_bmse_shift_one(
> return error;
> XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
>
> - error = xfs_bmbt_update(cur, new.br_startoff,
> - new.br_startblock, new.br_blockcount,
> - new.br_state);
> + error = xfs_bmbt_update(cur, &new);
> if (error)
> return error;
> } else {
> @@ -6197,10 +6146,7 @@ xfs_bmap_split_extent_at(
>
> logflags = XFS_ILOG_CORE;
> if (cur) {
> - error = xfs_bmbt_update(cur, got.br_startoff,
> - got.br_startblock,
> - got.br_blockcount,
> - got.br_state);
> + error = xfs_bmbt_update(cur, &got);
> if (error)
> goto del_cursor;
> } else
> diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
> index a6331ffa51e3..7e2d981626ef 100644
> --- a/fs/xfs/libxfs/xfs_bmap_btree.c
> +++ b/fs/xfs/libxfs/xfs_bmap_btree.c
> @@ -228,48 +228,32 @@ xfs_bmbt_set_all(
> s->br_blockcount, s->br_state);
> }
>
> -
> /*
> - * Set all the fields in a disk format bmap extent record from the arguments.
> + * Set all the fields in a bmap extent record from the uncompressed form.
> */
> void
> -xfs_bmbt_disk_set_allf(
> - xfs_bmbt_rec_t *r,
> - xfs_fileoff_t startoff,
> - xfs_fsblock_t startblock,
> - xfs_filblks_t blockcount,
> - xfs_exntst_t state)
> +xfs_bmbt_disk_set_all(
> + struct xfs_bmbt_rec *r,
> + struct xfs_bmbt_irec *s)
> {
> - int extent_flag = (state == XFS_EXT_NORM) ? 0 : 1;
> + int extent_flag = (s->br_state != XFS_EXT_NORM);
>
> - ASSERT(state == XFS_EXT_NORM || state == XFS_EXT_UNWRITTEN);
> - ASSERT((startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)) == 0);
> - ASSERT((blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)) == 0);
> - ASSERT((startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)) == 0);
> + ASSERT(s->br_state == XFS_EXT_NORM || s->br_state == XFS_EXT_UNWRITTEN);
> + ASSERT(!(s->br_startoff & xfs_mask64hi(64-BMBT_STARTOFF_BITLEN)));
> + ASSERT(!(s->br_blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)));
> + ASSERT(!(s->br_startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)));
>
> r->l0 = cpu_to_be64(
> ((xfs_bmbt_rec_base_t)extent_flag << 63) |
> - ((xfs_bmbt_rec_base_t)startoff << 9) |
> - ((xfs_bmbt_rec_base_t)startblock >> 43));
> + ((xfs_bmbt_rec_base_t)s->br_startoff << 9) |
> + ((xfs_bmbt_rec_base_t)s->br_startblock >> 43));
> r->l1 = cpu_to_be64(
> - ((xfs_bmbt_rec_base_t)startblock << 21) |
> - ((xfs_bmbt_rec_base_t)blockcount &
> + ((xfs_bmbt_rec_base_t)s->br_startblock << 21) |
> + ((xfs_bmbt_rec_base_t)s->br_blockcount &
> (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
> }
>
> /*
> - * Set all the fields in a bmap extent record from the uncompressed form.
> - */
> -STATIC void
> -xfs_bmbt_disk_set_all(
> - xfs_bmbt_rec_t *r,
> - xfs_bmbt_irec_t *s)
> -{
> - xfs_bmbt_disk_set_allf(r, s->br_startoff, s->br_startblock,
> - s->br_blockcount, s->br_state);
> -}
> -
> -/*
> * Set the blockcount field in a bmap extent record.
> */
> void
> diff --git a/fs/xfs/libxfs/xfs_bmap_btree.h b/fs/xfs/libxfs/xfs_bmap_btree.h
> index 9da5a8d4f184..bd3c56f1cd03 100644
> --- a/fs/xfs/libxfs/xfs_bmap_btree.h
> +++ b/fs/xfs/libxfs/xfs_bmap_btree.h
> @@ -104,6 +104,7 @@ extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_host_t *r);
> extern xfs_fileoff_t xfs_bmbt_get_startoff(xfs_bmbt_rec_host_t *r);
> extern xfs_exntst_t xfs_bmbt_get_state(xfs_bmbt_rec_host_t *r);
>
> +void xfs_bmbt_disk_set_all(struct xfs_bmbt_rec *r, struct xfs_bmbt_irec *s);
> extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r);
> extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r);
>
> @@ -115,9 +116,6 @@ extern void xfs_bmbt_set_startblock(xfs_bmbt_rec_host_t *r, xfs_fsblock_t v);
> extern void xfs_bmbt_set_startoff(xfs_bmbt_rec_host_t *r, xfs_fileoff_t v);
> extern void xfs_bmbt_set_state(xfs_bmbt_rec_host_t *r, xfs_exntst_t v);
>
> -extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o,
> - xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
> -
> extern void xfs_bmbt_to_bmdr(struct xfs_mount *, struct xfs_btree_block *, int,
> xfs_bmdr_block_t *, int);
>
> --
> 2.11.0
>
> --
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