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NFS cleanup: speed up nfs_scan_commit using radix tree tags

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Add a tag for requests that are waiting for a COMMIT

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2007-06-17 15:27:42 -04:00
parent 9fd367f0f3
commit 5c36968343
3 changed files with 15 additions and 10 deletions
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6
fs/nfs/write.c
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@@ -462,6 +462,9 @@ nfs_mark_request_commit(struct nfs_page *req)
nfs_list_add_request(req, &nfsi->commit);
nfsi->ncommit++;
set_bit(PG_NEED_COMMIT, &(req)->wb_flags);
radix_tree_tag_set(&nfsi->nfs_page_tree,
req->wb_index,
NFS_PAGE_TAG_COMMIT);
spin_unlock(&nfsi->req_lock);
inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
@@ -575,7 +578,8 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, u
int res = 0;
if (nfsi->ncommit != 0) {
res = nfs_scan_list(nfsi, &nfsi->commit, dst, idx_start, npages);
res = nfs_scan_list(nfsi, dst, idx_start, npages,
NFS_PAGE_TAG_COMMIT);
nfsi->ncommit -= res;
if ((nfsi->ncommit == 0) != list_empty(&nfsi->commit))
printk(KERN_ERR "NFS: desynchronized value of nfs_i.ncommit.\n");