| Message ID | 20210305051143.182133-32-david@fromorbit.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | xfs: consolidated log and optimisation changes | expand |
On Fri, Mar 05, 2021 at 04:11:29PM +1100, Dave Chinner wrote: > From: Dave Chinner <dchinner@redhat.com> > > Now that we account for log opheaders in the log item formatting > code, we don't actually use the aggregated count of log iovecs in > the CIL for anything. Remove it and the tracking code that > calculates it. > > Signed-off-by: Dave Chinner <dchinner@redhat.com> > --- > fs/xfs/xfs_log_cil.c | 22 ++++++---------------- > 1 file changed, 6 insertions(+), 16 deletions(-) > > diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c > index 34abc3bae587..4047f95a0fc4 100644 > --- a/fs/xfs/xfs_log_cil.c > +++ b/fs/xfs/xfs_log_cil.c > @@ -252,22 +252,18 @@ xlog_cil_alloc_shadow_bufs( > > /* > * Prepare the log item for insertion into the CIL. Calculate the difference in > - * log space and vectors it will consume, and if it is a new item pin it as > - * well. > + * log space it will consume, and if it is a new item pin it as well. > */ > STATIC void > xfs_cil_prepare_item( > struct xlog *log, > struct xfs_log_vec *lv, > struct xfs_log_vec *old_lv, > - int *diff_len, > - int *diff_iovecs) > + int *diff_len) > { > /* Account for the new LV being passed in */ > - if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) { > + if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) > *diff_len += lv->lv_bytes; > - *diff_iovecs += lv->lv_niovecs; > - } > > /* > * If there is no old LV, this is the first time we've seen the item in > @@ -284,7 +280,6 @@ xfs_cil_prepare_item( > ASSERT(lv->lv_buf_len != XFS_LOG_VEC_ORDERED); > > *diff_len -= old_lv->lv_bytes; > - *diff_iovecs -= old_lv->lv_niovecs; > lv->lv_item->li_lv_shadow = old_lv; > } > > @@ -333,12 +328,10 @@ static void > xlog_cil_insert_format_items( > struct xlog *log, > struct xfs_trans *tp, > - int *diff_len, > - int *diff_iovecs) > + int *diff_len) > { > struct xfs_log_item *lip; > > - > /* Bail out if we didn't find a log item. */ > if (list_empty(&tp->t_items)) { > ASSERT(0); > @@ -381,7 +374,6 @@ xlog_cil_insert_format_items( > * set the item up as though it is a new insertion so > * that the space reservation accounting is correct. > */ > - *diff_iovecs -= lv->lv_niovecs; > *diff_len -= lv->lv_bytes; > > /* Ensure the lv is set up according to ->iop_size */ > @@ -406,7 +398,7 @@ xlog_cil_insert_format_items( > ASSERT(IS_ALIGNED((unsigned long)lv->lv_buf, sizeof(uint64_t))); > lip->li_ops->iop_format(lip, lv); > insert: > - xfs_cil_prepare_item(log, lv, old_lv, diff_len, diff_iovecs); > + xfs_cil_prepare_item(log, lv, old_lv, diff_len); > } > } > > @@ -426,7 +418,6 @@ xlog_cil_insert_items( > struct xfs_cil_ctx *ctx = cil->xc_ctx; > struct xfs_log_item *lip; > int len = 0; > - int diff_iovecs = 0; > int iclog_space; > int iovhdr_res = 0, split_res = 0, ctx_res = 0; > > @@ -436,7 +427,7 @@ xlog_cil_insert_items( > * We can do this safely because the context can't checkpoint until we > * are done so it doesn't matter exactly how we update the CIL. > */ > - xlog_cil_insert_format_items(log, tp, &len, &diff_iovecs); > + xlog_cil_insert_format_items(log, tp, &len); > > spin_lock(&cil->xc_cil_lock); > > @@ -471,7 +462,6 @@ xlog_cil_insert_items( > } > tp->t_ticket->t_curr_res -= len; > ctx->space_used += len; > - ctx->nvecs += diff_iovecs; If the tracking variable isn't necessary any more, should the field go away from xfs_cil_ctx? --D > > /* > * If we've overrun the reservation, dump the tx details before we move > -- > 2.28.0 >
On Mon, Mar 08, 2021 at 07:16:04PM -0800, Darrick J. Wong wrote: > On Fri, Mar 05, 2021 at 04:11:29PM +1100, Dave Chinner wrote: > > @@ -471,7 +462,6 @@ xlog_cil_insert_items( > > } > > tp->t_ticket->t_curr_res -= len; > > ctx->space_used += len; > > - ctx->nvecs += diff_iovecs; > > If the tracking variable isn't necessary any more, should the field go > away from xfs_cil_ctx? Yes. I thought I cleaned that up. Fixed.
diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index 34abc3bae587..4047f95a0fc4 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -252,22 +252,18 @@ xlog_cil_alloc_shadow_bufs( /* * Prepare the log item for insertion into the CIL. Calculate the difference in - * log space and vectors it will consume, and if it is a new item pin it as - * well. + * log space it will consume, and if it is a new item pin it as well. */ STATIC void xfs_cil_prepare_item( struct xlog *log, struct xfs_log_vec *lv, struct xfs_log_vec *old_lv, - int *diff_len, - int *diff_iovecs) + int *diff_len) { /* Account for the new LV being passed in */ - if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) { + if (lv->lv_buf_len != XFS_LOG_VEC_ORDERED) *diff_len += lv->lv_bytes; - *diff_iovecs += lv->lv_niovecs; - } /* * If there is no old LV, this is the first time we've seen the item in @@ -284,7 +280,6 @@ xfs_cil_prepare_item( ASSERT(lv->lv_buf_len != XFS_LOG_VEC_ORDERED); *diff_len -= old_lv->lv_bytes; - *diff_iovecs -= old_lv->lv_niovecs; lv->lv_item->li_lv_shadow = old_lv; } @@ -333,12 +328,10 @@ static void xlog_cil_insert_format_items( struct xlog *log, struct xfs_trans *tp, - int *diff_len, - int *diff_iovecs) + int *diff_len) { struct xfs_log_item *lip; - /* Bail out if we didn't find a log item. */ if (list_empty(&tp->t_items)) { ASSERT(0); @@ -381,7 +374,6 @@ xlog_cil_insert_format_items( * set the item up as though it is a new insertion so * that the space reservation accounting is correct. */ - *diff_iovecs -= lv->lv_niovecs; *diff_len -= lv->lv_bytes; /* Ensure the lv is set up according to ->iop_size */ @@ -406,7 +398,7 @@ xlog_cil_insert_format_items( ASSERT(IS_ALIGNED((unsigned long)lv->lv_buf, sizeof(uint64_t))); lip->li_ops->iop_format(lip, lv); insert: - xfs_cil_prepare_item(log, lv, old_lv, diff_len, diff_iovecs); + xfs_cil_prepare_item(log, lv, old_lv, diff_len); } } @@ -426,7 +418,6 @@ xlog_cil_insert_items( struct xfs_cil_ctx *ctx = cil->xc_ctx; struct xfs_log_item *lip; int len = 0; - int diff_iovecs = 0; int iclog_space; int iovhdr_res = 0, split_res = 0, ctx_res = 0; @@ -436,7 +427,7 @@ xlog_cil_insert_items( * We can do this safely because the context can't checkpoint until we * are done so it doesn't matter exactly how we update the CIL. */ - xlog_cil_insert_format_items(log, tp, &len, &diff_iovecs); + xlog_cil_insert_format_items(log, tp, &len); spin_lock(&cil->xc_cil_lock); @@ -471,7 +462,6 @@ xlog_cil_insert_items( } tp->t_ticket->t_curr_res -= len; ctx->space_used += len; - ctx->nvecs += diff_iovecs; /* * If we've overrun the reservation, dump the tx details before we move