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xfs: return log item size in IOP_SIZE

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To begin optimising the CIL commit process, we need to have IOP_SIZE
return both the number of vectors and the size of the data pointed
to by the vectors. This enables us to calculate the size ofthe
memory allocation needed before the formatting step and reduces the
number of memory allocations per item by one.

While there, kill the IOP_SIZE macro.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner
2013-08-12 20:50:04 +10:00
committed by Ben Myers
parent 050a1952c3
commit 166d13688a
7 changed files with 128 additions and 75 deletions
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9
fs/xfs/xfs_icreate_item.c
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@@ -40,11 +40,14 @@ static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
*
* We only need one iovec for the icreate log structure.
*/
STATIC uint
STATIC void
xfs_icreate_item_size(
struct xfs_log_item *lip)
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
return 1;
*nvecs += 1;
*nbytes += sizeof(struct xfs_icreate_log);
}
/*