| Message ID | 20200522035029.3022405-10-david@fromorbit.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | xfs: rework inode flushing to make inode reclaim fully asynchronous | expand |
On Fri, May 22, 2020 at 01:50:14PM +1000, Dave Chinner wrote: > From: Dave Chinner <dchinner@redhat.com> > > Similar to inodes, we can call the dquot IO completion functions > directly from the buffer completion code, removing another user of > log item callbacks for IO completion processing. > > Signed-off-by: Dave Chinner <dchinner@redhat.com> Looks pretty straightforward. I bet li_cb goes away soon? Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > fs/xfs/xfs_buf_item.c | 18 +++++++++++++++++- > fs/xfs/xfs_dquot.c | 27 +++++++++++++++++++++++---- > fs/xfs/xfs_dquot.h | 1 + > 3 files changed, 41 insertions(+), 5 deletions(-) > > diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c > index e376f778bf57c..57e5d37f6852e 100644 > --- a/fs/xfs/xfs_buf_item.c > +++ b/fs/xfs/xfs_buf_item.c > @@ -15,6 +15,9 @@ > #include "xfs_buf_item.h" > #include "xfs_inode.h" > #include "xfs_inode_item.h" > +#include "xfs_quota.h" > +#include "xfs_dquot_item.h" > +#include "xfs_dquot.h" > #include "xfs_trans_priv.h" > #include "xfs_trace.h" > #include "xfs_log.h" > @@ -1209,7 +1212,20 @@ void > xfs_buf_dquot_iodone( > struct xfs_buf *bp) > { > - xfs_buf_run_callbacks(bp); > + struct xfs_buf_log_item *blip = bp->b_log_item; > + struct xfs_log_item *lip; > + > + if (xfs_buf_had_callback_errors(bp)) > + return; > + > + /* a newly allocated dquot buffer might have a log item attached */ > + if (blip) { > + lip = &blip->bli_item; > + lip->li_cb(bp, lip); > + bp->b_log_item = NULL; > + } > + > + xfs_dquot_done(bp); > xfs_buf_ioend_finish(bp); > } > > diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c > index 25592b701db40..1d7f34a9bc989 100644 > --- a/fs/xfs/xfs_dquot.c > +++ b/fs/xfs/xfs_dquot.c > @@ -1043,9 +1043,8 @@ xfs_qm_dqrele( > * from the AIL if it has not been re-logged, and unlocking the dquot's > * flush lock. This behavior is very similar to that of inodes.. > */ > -STATIC void > +static void > xfs_qm_dqflush_done( > - struct xfs_buf *bp, > struct xfs_log_item *lip) > { > struct xfs_dq_logitem *qip = (struct xfs_dq_logitem *)lip; > @@ -1086,6 +1085,27 @@ xfs_qm_dqflush_done( > xfs_dqfunlock(dqp); > } > > +void > +xfs_dquot_done( > + struct xfs_buf *bp) > +{ > + struct xfs_log_item *lip; > + > + while (!list_empty(&bp->b_li_list)) { > + lip = list_first_entry(&bp->b_li_list, struct xfs_log_item, > + li_bio_list); > + > + /* > + * Remove the item from the list, so we don't have any > + * confusion if the item is added to another buf. > + * Don't touch the log item after calling its > + * callback, because it could have freed itself. > + */ > + list_del_init(&lip->li_bio_list); > + xfs_qm_dqflush_done(lip); > + } > +} > + > /* > * Write a modified dquot to disk. > * The dquot must be locked and the flush lock too taken by caller. > @@ -1175,8 +1195,7 @@ xfs_qm_dqflush( > * AIL and release the flush lock once the dquot is synced to disk. > */ > bp->b_flags |= _XBF_DQUOTS; > - xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, > - &dqp->q_logitem.qli_item); > + xfs_buf_attach_iodone(bp, NULL, &dqp->q_logitem.qli_item); > > /* > * If the buffer is pinned then push on the log so we won't > diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h > index fe3e46df604b4..f1924288986d3 100644 > --- a/fs/xfs/xfs_dquot.h > +++ b/fs/xfs/xfs_dquot.h > @@ -174,6 +174,7 @@ void xfs_qm_dqput(struct xfs_dquot *dqp); > void xfs_dqlock2(struct xfs_dquot *, struct xfs_dquot *); > > void xfs_dquot_set_prealloc_limits(struct xfs_dquot *); > +void xfs_dquot_done(struct xfs_buf *); > > static inline struct xfs_dquot *xfs_qm_dqhold(struct xfs_dquot *dqp) > { > -- > 2.26.2.761.g0e0b3e54be >
> +void > +xfs_dquot_done( > + struct xfs_buf *bp) > +{ > + struct xfs_log_item *lip; > + > + while (!list_empty(&bp->b_li_list)) { > + lip = list_first_entry(&bp->b_li_list, struct xfs_log_item, > + li_bio_list); > + > + /* > + * Remove the item from the list, so we don't have any > + * confusion if the item is added to another buf. > + * Don't touch the log item after calling its > + * callback, because it could have freed itself. > + */ > + list_del_init(&lip->li_bio_list); > + xfs_qm_dqflush_done(lip); I know this was just moved, but I find the comment horrible confusing and not actually adding any value. Can we just remove it? For extra clarity this could also be switched to list_for_each_entry_safe: list_for_each_entry_safe(lip, n, &bp->b_li_list, li_bio_list) { list_del_init(&lip->li_bio_list); xfs_qm_dqflush_done(lip); }
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index e376f778bf57c..57e5d37f6852e 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -15,6 +15,9 @@ #include "xfs_buf_item.h" #include "xfs_inode.h" #include "xfs_inode_item.h" +#include "xfs_quota.h" +#include "xfs_dquot_item.h" +#include "xfs_dquot.h" #include "xfs_trans_priv.h" #include "xfs_trace.h" #include "xfs_log.h" @@ -1209,7 +1212,20 @@ void xfs_buf_dquot_iodone( struct xfs_buf *bp) { - xfs_buf_run_callbacks(bp); + struct xfs_buf_log_item *blip = bp->b_log_item; + struct xfs_log_item *lip; + + if (xfs_buf_had_callback_errors(bp)) + return; + + /* a newly allocated dquot buffer might have a log item attached */ + if (blip) { + lip = &blip->bli_item; + lip->li_cb(bp, lip); + bp->b_log_item = NULL; + } + + xfs_dquot_done(bp); xfs_buf_ioend_finish(bp); } diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 25592b701db40..1d7f34a9bc989 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -1043,9 +1043,8 @@ xfs_qm_dqrele( * from the AIL if it has not been re-logged, and unlocking the dquot's * flush lock. This behavior is very similar to that of inodes.. */ -STATIC void +static void xfs_qm_dqflush_done( - struct xfs_buf *bp, struct xfs_log_item *lip) { struct xfs_dq_logitem *qip = (struct xfs_dq_logitem *)lip; @@ -1086,6 +1085,27 @@ xfs_qm_dqflush_done( xfs_dqfunlock(dqp); } +void +xfs_dquot_done( + struct xfs_buf *bp) +{ + struct xfs_log_item *lip; + + while (!list_empty(&bp->b_li_list)) { + lip = list_first_entry(&bp->b_li_list, struct xfs_log_item, + li_bio_list); + + /* + * Remove the item from the list, so we don't have any + * confusion if the item is added to another buf. + * Don't touch the log item after calling its + * callback, because it could have freed itself. + */ + list_del_init(&lip->li_bio_list); + xfs_qm_dqflush_done(lip); + } +} + /* * Write a modified dquot to disk. * The dquot must be locked and the flush lock too taken by caller. @@ -1175,8 +1195,7 @@ xfs_qm_dqflush( * AIL and release the flush lock once the dquot is synced to disk. */ bp->b_flags |= _XBF_DQUOTS; - xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, - &dqp->q_logitem.qli_item); + xfs_buf_attach_iodone(bp, NULL, &dqp->q_logitem.qli_item); /* * If the buffer is pinned then push on the log so we won't diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index fe3e46df604b4..f1924288986d3 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -174,6 +174,7 @@ void xfs_qm_dqput(struct xfs_dquot *dqp); void xfs_dqlock2(struct xfs_dquot *, struct xfs_dquot *); void xfs_dquot_set_prealloc_limits(struct xfs_dquot *); +void xfs_dquot_done(struct xfs_buf *); static inline struct xfs_dquot *xfs_qm_dqhold(struct xfs_dquot *dqp) {