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ceph: pass parent dir ino info to build_dentry_path 

In the event that we have a parent inode reference in the request, we
can use that instead of mucking about in the dcache. Pass any parent
inode info we have down to build_dentry_path so it can make use of it.

Link: http://tracker.ceph.com/issues/18148
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2016-12-15 08:37:58 -05:00 committed by Ilya Dryomov
parent c6b0b656ca
commit fd36a71762
1 changed files with 9 additions and 7 deletions
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16
fs/ceph/mds_client.c
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@ -1795,15 +1795,15 @@ retry:
return path;
}
static int build_dentry_path(struct dentry *dentry,
static int build_dentry_path(struct dentry *dentry, struct inode *dir,
const char **ppath, int *ppathlen, u64 *pino,
int *pfreepath)
{
char *path;
struct inode *dir;
rcu_read_lock();
dir = d_inode_rcu(dentry->d_parent);
if (!dir)
dir = d_inode_rcu(dentry->d_parent);
if (dir && ceph_snap(dir) == CEPH_NOSNAP) {
*pino = ceph_ino(dir);
rcu_read_unlock();
@ -1847,8 +1847,8 @@ static int build_inode_path(struct inode *inode,
* an explicit ino+path.
*/
static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
const char *rpath, u64 rino,
const char **ppath, int *pathlen,
struct inode *rdiri, const char *rpath,
u64 rino, const char **ppath, int *pathlen,
u64 *ino, int *freepath)
{
int r = 0;
@ -1858,7 +1858,8 @@ static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
dout(" inode %p %llx.%llx\n", rinode, ceph_ino(rinode),
ceph_snap(rinode));
} else if (rdentry) {
r = build_dentry_path(rdentry, ppath, pathlen, ino, freepath);
r = build_dentry_path(rdentry, rdiri, ppath, pathlen, ino,
freepath);
dout(" dentry %p %llx/%.*s\n", rdentry, *ino, *pathlen,
*ppath);
} else if (rpath || rino) {
@ -1891,7 +1892,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
int ret;
ret = set_request_path_attr(req->r_inode, req->r_dentry,
req->r_path1, req->r_ino1.ino,
req->r_locked_dir, req->r_path1, req->r_ino1.ino,
&path1, &pathlen1, &ino1, &freepath1);
if (ret < 0) {
msg = ERR_PTR(ret);
@ -1899,6 +1900,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
}
ret = set_request_path_attr(NULL, req->r_old_dentry,
req->r_old_dentry_dir,
req->r_path2, req->r_ino2.ino,
&path2, &pathlen2, &ino2, &freepath2);
if (ret < 0) {