luck/tmp_suning_uos_patched
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ceph: avoid inode lookup on nfs fh reconnect

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If we get the inode from the MDS, we have a reference in req; don't do a
fresh lookup.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2011-04-06 09:35:00 -07:00
parent 3c454cf216
commit 45e3d3eeb6
1 changed files with 6 additions and 2 deletions
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8
fs/ceph/export.c
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@ -107,8 +107,10 @@ static struct dentry *__fh_to_dentry(struct super_block *sb,
req->r_ino1 = vino;
req->r_num_caps = 1;
err = ceph_mdsc_do_request(mdsc, NULL, req);
inode = req->r_target_inode;
if (inode)
igrab(inode);
ceph_mdsc_put_request(req);
inode = ceph_find_inode(sb, vino);
if (!inode)
return ERR_PTR(-ESTALE);
}
@ -163,8 +165,10 @@ static struct dentry *__cfh_to_dentry(struct super_block *sb,
snprintf(req->r_path2, 16, "%d", cfh->parent_name_hash);
req->r_num_caps = 1;
err = ceph_mdsc_do_request(mdsc, NULL, req);
inode = req->r_target_inode;
if (inode)
igrab(inode);
ceph_mdsc_put_request(req);
inode = ceph_find_inode(sb, vino);
if (!inode)
return ERR_PTR(err ? err : -ESTALE);
}