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xfs: remove the extents array from the rmap update done log item

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Nothing ever uses the extent array in the rmap update done redo
item, so remove it before it is fixed in the on-disk log format.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Darrick J. Wong 2016-08-03 12:28:43 +10:00 committed by Dave Chinner
parent c1d22ae89c
commit 722e251770
7 changed files with 15 additions and 89 deletions
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3
fs/xfs/libxfs/xfs_log_format.h
View File

@ -658,9 +658,8 @@ struct xfs_rui_log_format {
struct xfs_rud_log_format {
__uint16_t rud_type; /* rud log item type */
__uint16_t rud_size; /* size of this item */
__uint32_t rud_nextents; /* # of extents freed */
__uint32_t __pad;
__uint64_t rud_rui_id; /* id of corresponding rui */
struct xfs_map_extent rud_extents[1]; /* array of extents rmapped */
};
/*

4
fs/xfs/xfs_log_recover.c
View File

@ -3482,9 +3482,7 @@ xlog_recover_rud_pass2(
struct xfs_ail *ailp = log->l_ailp;
rud_formatp = item->ri_buf[0].i_addr;
ASSERT(item->ri_buf[0].i_len == (sizeof(struct xfs_rud_log_format) +
((rud_formatp->rud_nextents - 1) *
sizeof(struct xfs_map_extent))));
ASSERT(item->ri_buf[0].i_len == sizeof(struct xfs_rud_log_format));
rui_id = rud_formatp->rud_rui_id;
/*

50
fs/xfs/xfs_rmap_item.c
View File

@ -272,29 +272,6 @@ static inline struct xfs_rud_log_item *RUD_ITEM(struct xfs_log_item *lip)
return container_of(lip, struct xfs_rud_log_item, rud_item);
}
STATIC void
xfs_rud_item_free(struct xfs_rud_log_item *rudp)
{
if (rudp->rud_format.rud_nextents > XFS_RUD_MAX_FAST_EXTENTS)
kmem_free(rudp);
else
kmem_zone_free(xfs_rud_zone, rudp);
}
/*
* This returns the number of iovecs needed to log the given rud item.
* We only need 1 iovec for an rud item. It just logs the rud_log_format
* structure.
*/
static inline int
xfs_rud_item_sizeof(
struct xfs_rud_log_item *rudp)
{
return sizeof(struct xfs_rud_log_format) +
(rudp->rud_format.rud_nextents - 1) *
sizeof(struct xfs_map_extent);
}
STATIC void
xfs_rud_item_size(
struct xfs_log_item *lip,
@ -302,7 +279,7 @@ xfs_rud_item_size(
int *nbytes)
{
*nvecs += 1;
*nbytes += xfs_rud_item_sizeof(RUD_ITEM(lip));
*nbytes += sizeof(struct xfs_rud_log_format);
}
/*
@ -320,13 +297,11 @@ xfs_rud_item_format(
struct xfs_rud_log_item *rudp = RUD_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
ASSERT(rudp->rud_next_extent == rudp->rud_format.rud_nextents);
rudp->rud_format.rud_type = XFS_LI_RUD;
rudp->rud_format.rud_size = 1;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_RUD_FORMAT, &rudp->rud_format,
xfs_rud_item_sizeof(rudp));
sizeof(struct xfs_rud_log_format));
}
/*
@ -374,7 +349,7 @@ xfs_rud_item_unlock(
if (lip->li_flags & XFS_LI_ABORTED) {
xfs_rui_release(rudp->rud_ruip);
xfs_rud_item_free(rudp);
kmem_zone_free(xfs_rud_zone, rudp);
}
}
@ -398,7 +373,7 @@ xfs_rud_item_committed(
* aborted due to log I/O error).
*/
xfs_rui_release(rudp->rud_ruip);
xfs_rud_item_free(rudp);
kmem_zone_free(xfs_rud_zone, rudp);
return (xfs_lsn_t)-1;
}
@ -437,25 +412,14 @@ static const struct xfs_item_ops xfs_rud_item_ops = {
struct xfs_rud_log_item *
xfs_rud_init(
struct xfs_mount *mp,
struct xfs_rui_log_item *ruip,
uint nextents)
struct xfs_rui_log_item *ruip)
{
struct xfs_rud_log_item *rudp;
uint size;
ASSERT(nextents > 0);
if (nextents > XFS_RUD_MAX_FAST_EXTENTS) {
size = (uint)(sizeof(struct xfs_rud_log_item) +
((nextents - 1) * sizeof(struct xfs_map_extent)));
rudp = kmem_zalloc(size, KM_SLEEP);
} else {
rudp = kmem_zone_zalloc(xfs_rud_zone, KM_SLEEP);
}
rudp = kmem_zone_zalloc(xfs_rud_zone, KM_SLEEP);
xfs_log_item_init(mp, &rudp->rud_item, XFS_LI_RUD, &xfs_rud_item_ops);
rudp->rud_ruip = ruip;
rudp->rud_format.rud_nextents = nextents;
rudp->rud_format.rud_rui_id = ruip->rui_format.rui_id;
return rudp;
@ -523,7 +487,7 @@ xfs_rui_recover(
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp);
if (error)
return error;
rudp = xfs_trans_get_rud(tp, ruip, ruip->rui_format.rui_nextents);
rudp = xfs_trans_get_rud(tp, ruip);
for (i = 0; i < ruip->rui_format.rui_nextents; i++) {
rmap = &(ruip->rui_format.rui_extents[i]);

8
fs/xfs/xfs_rmap_item.h
View File

@ -77,21 +77,15 @@ struct xfs_rui_log_item {
struct xfs_rud_log_item {
struct xfs_log_item rud_item;
struct xfs_rui_log_item *rud_ruip;
uint rud_next_extent;
struct xfs_rud_log_format rud_format;
};
/*
* Max number of extents in fast allocation path.
*/
#define XFS_RUD_MAX_FAST_EXTENTS 16
extern struct kmem_zone *xfs_rui_zone;
extern struct kmem_zone *xfs_rud_zone;
struct xfs_rui_log_item *xfs_rui_init(struct xfs_mount *, uint);
struct xfs_rud_log_item *xfs_rud_init(struct xfs_mount *,
struct xfs_rui_log_item *, uint);
struct xfs_rui_log_item *);
int xfs_rui_copy_format(struct xfs_log_iovec *buf,
struct xfs_rui_log_format *dst_rui_fmt);
void xfs_rui_item_free(struct xfs_rui_log_item *);

4
fs/xfs/xfs_super.c
View File

@ -1770,9 +1770,7 @@ xfs_init_zones(void)
if (!xfs_icreate_zone)
goto out_destroy_ili_zone;
xfs_rud_zone = kmem_zone_init((sizeof(struct xfs_rud_log_item) +
((XFS_RUD_MAX_FAST_EXTENTS - 1) *
sizeof(struct xfs_map_extent))),
xfs_rud_zone = kmem_zone_init(sizeof(struct xfs_rud_log_item),
"xfs_rud_item");
if (!xfs_rud_zone)
goto out_destroy_icreate_zone;

2
fs/xfs/xfs_trans.h
View File

@ -241,7 +241,7 @@ enum xfs_rmap_intent_type;
void xfs_rmap_update_init_defer_op(void);
struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp,
struct xfs_rui_log_item *ruip, uint nextents);
struct xfs_rui_log_item *ruip);
int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
__uint64_t owner, int whichfork, xfs_fileoff_t startoff,

33
fs/xfs/xfs_trans_rmap.c
View File

@ -129,29 +129,14 @@ xfs_trans_log_start_rmap_update(
xfs_trans_set_rmap_flags(rmap, type, whichfork, state);
}
/*
* This routine is called to allocate an "rmap update done"
* log item that will hold nextents worth of extents. The
* caller must use all nextents extents, because we are not
* flexible about this at all.
*/
struct xfs_rud_log_item *
xfs_trans_get_rud(
struct xfs_trans *tp,
struct xfs_rui_log_item *ruip,
uint nextents)
struct xfs_rui_log_item *ruip)
{
struct xfs_rud_log_item *rudp;
ASSERT(tp != NULL);
ASSERT(nextents > 0);
rudp = xfs_rud_init(tp->t_mountp, ruip, nextents);
ASSERT(rudp != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
rudp = xfs_rud_init(tp->t_mountp, ruip);
xfs_trans_add_item(tp, &rudp->rud_item);
return rudp;
}
@ -174,8 +159,6 @@ xfs_trans_log_finish_rmap_update(
xfs_exntst_t state,
struct xfs_btree_cur **pcur)
{
uint next_extent;
struct xfs_map_extent *rmap;
int error;
error = xfs_rmap_finish_one(tp, type, owner, whichfork, startoff,
@ -191,16 +174,6 @@ xfs_trans_log_finish_rmap_update(
tp->t_flags |= XFS_TRANS_DIRTY;
rudp->rud_item.li_desc->lid_flags |= XFS_LID_DIRTY;
next_extent = rudp->rud_next_extent;
ASSERT(next_extent < rudp->rud_format.rud_nextents);
rmap = &(rudp->rud_format.rud_extents[next_extent]);
rmap->me_owner = owner;
rmap->me_startblock = startblock;
rmap->me_startoff = startoff;
rmap->me_len = blockcount;
xfs_trans_set_rmap_flags(rmap, type, whichfork, state);
rudp->rud_next_extent++;
return error;
}
@ -255,7 +228,7 @@ xfs_rmap_update_create_done(
void *intent,
unsigned int count)
{
return xfs_trans_get_rud(tp, intent, count);
return xfs_trans_get_rud(tp, intent);
}
/* Process a deferred rmap update. */