On 12/28/13 05:22, Jeff Liu wrote:
From: Jie Liu<jeff.liu@xxxxxxxxxx>
Introduce xfs_bulkstat_ichunk_ra() to loop over all clusters in
the next inode chunk, then performs readahead if there are any
allocated inodes in that cluster.
Refactor xfs_bulkstat() with it.
Signed-off-by: Jie Liu<jeff.liu@xxxxxxxxxx>
---
Had some problems applying this patch.
...
+STATIC void
+xfs_bulkstat_ichunk_ra(
+ struct xfs_mount *mp,
+ xfs_agnumber_t agno,
+ struct xfs_inobt_rec_incore *irec)
+{
+ xfs_agblock_t agbno;
+ struct blk_plug plug;
+ int blks_per_cluster;
+ int inodes_per_cluster;
+ int i; /* inode chunk index */
+
+ agbno = XFS_AGINO_TO_AGBNO(mp, irec->ir_startino);
+ blks_per_cluster = xfs_icluster_size_fsb(mp);
^^^^^
does not exist.
@@ -187,7 +218,6 @@ xfs_bulkstat(
char __user *ubuffer, /* buffer with inode stats */
int *done) /* 1 if there are more stats to get */
{
- xfs_agblock_t agbno=0;/* allocation group block number */
xfs_buf_t *agbp; /* agi header buffer */
xfs_agi_t *agi; /* agi header data */
xfs_agino_t agino; /* inode # in allocation group */
@@ -206,8 +236,6 @@ xfs_bulkstat(
xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */
xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */
xfs_ino_t lastino; /* last inode number returned */
- int blks_per_cluster; /* # of blocks per cluster */
- int inodes_per_cluster;/* # of inodes per cluster */
int nirbuf; /* size of irbuf */
int rval; /* return value error code */
int tmp; /* result value from btree calls */
@@ -236,8 +264,6 @@ xfs_bulkstat(
*done = 0;
fmterror = 0;
ubufp = ubuffer;
- blks_per_cluster = xfs_icluster_size_fsb(mp);
- inodes_per_cluster = blks_per_cluster<< mp->m_sb.sb_inopblog;
irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
if (!irbuf)
return ENOMEM;
@@ -345,25 +371,7 @@ xfs_bulkstat(
* Also start read-ahead now for this chunk.
*/
if (r.ir_freecount< XFS_INODES_PER_CHUNK) {
- struct blk_plug plug;
- /*
- * Loop over all clusters in the next chunk.
- * Do a readahead if there are any allocated
- * inodes in that cluster.
- */
- blk_start_plug(&plug);
- agbno = XFS_AGINO_TO_AGBNO(mp, r.ir_startino);
- for (chunkidx = 0;
- chunkidx< XFS_INODES_PER_CHUNK;
- chunkidx += inodes_per_cluster,
- agbno += blks_per_cluster) {
- if (xfs_inobt_maskn(chunkidx,
- inodes_per_cluster)& ~r.ir_free)
- xfs_btree_reada_bufs(mp, agno,
- agbno, blks_per_cluster,
- &xfs_inode_buf_ops);
- }
- blk_finish_plug(&plug);
+ xfs_bulkstat_ichunk_ra(mp, agno,&r);
irbp->ir_startino = r.ir_startino;
irbp->ir_freecount = r.ir_freecount;
irbp->ir_free = r.ir_free;
last 3 chunks failed to apply because the sources have
nbcluster/nicluster (and nimask) instead of
blks_per_cluster/inodes_per_cluster.
--Mark.
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