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ceph: voluntarily drop Fx cap for readdir request

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MDS need to rdlock directory inode's filelock when handling readdir
request. Voluntarily dropping CEPH_CAP_AUTH_EXCL avoids a cap revoke
message.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2017-11-23 18:28:16 +08:00 committed by Ilya Dryomov
parent be70489eff
commit 87c91a965a
1 changed files with 1 additions and 0 deletions
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fs/ceph/dir.c
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@ -381,6 +381,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
if (op == CEPH_MDS_OP_READDIR) { if (op == CEPH_MDS_OP_READDIR) {
req->r_direct_hash = ceph_frag_value(frag); req->r_direct_hash = ceph_frag_value(frag);
__set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags); __set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
req->r_inode_drop = CEPH_CAP_FILE_EXCL;
} }
if (fi->last_name) { if (fi->last_name) {
req->r_path2 = kstrdup(fi->last_name, GFP_KERNEL); req->r_path2 = kstrdup(fi->last_name, GFP_KERNEL);