*/
void ceph_check_caps(struct ceph_inode_info *ci, int flags,
struct ceph_mds_session *session)
+ __releases(session->s_mutex)
{
struct ceph_client *client = ceph_inode_to_client(&ci->vfs_inode);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_cap *cap;
int file_wanted, used;
int took_snap_rwsem = 0; /* true if mdsc->snap_rwsem held */
- int drop_session_lock = session ? 0 : 1;
int issued, implemented, want, retain, revoking, flushing = 0;
int mds = -1; /* keep track of how far we've gone through i_caps list
to avoid an infinite loop on retry */
if (queue_invalidate)
ceph_queue_invalidate(inode);
- if (session && drop_session_lock)
+ if (session)
mutex_unlock(&session->s_mutex);
if (took_snap_rwsem)
up_read(&mdsc->snap_rwsem);
* Handle a cap GRANT message from the MDS. (Note that a GRANT may
* actually be a revocation if it specifies a smaller cap set.)
*
- * caller holds s_mutex.
+ * caller holds s_mutex and i_lock, we drop both.
+ *
* return value:
* 0 - ok
* 1 - check_caps on auth cap only (writeback)
* 2 - check_caps (ack revoke)
*/
-static int handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
- struct ceph_mds_session *session,
- struct ceph_cap *cap,
- struct ceph_buffer *xattr_buf)
+static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
+ struct ceph_mds_session *session,
+ struct ceph_cap *cap,
+ struct ceph_buffer *xattr_buf)
__releases(inode->i_lock)
-
+ __releases(session->s_mutex)
{
struct ceph_inode_info *ci = ceph_inode(inode);
int mds = session->s_mds;
u64 size = le64_to_cpu(grant->size);
u64 max_size = le64_to_cpu(grant->max_size);
struct timespec mtime, atime, ctime;
- int reply = 0;
+ int check_caps = 0;
int wake = 0;
int writeback = 0;
int revoked_rdcache = 0;
if ((used & ~newcaps) & CEPH_CAP_FILE_BUFFER)
writeback = 1; /* will delay ack */
else if (dirty & ~newcaps)
- reply = 1; /* initiate writeback in check_caps */
+ check_caps = 1; /* initiate writeback in check_caps */
else if (((used & ~newcaps) & CEPH_CAP_FILE_CACHE) == 0 ||
revoked_rdcache)
- reply = 2; /* send revoke ack in check_caps */
+ check_caps = 2; /* send revoke ack in check_caps */
cap->issued = newcaps;
cap->implemented |= newcaps;
} else if (cap->issued == newcaps) {
ceph_queue_invalidate(inode);
if (wake)
wake_up(&ci->i_cap_wq);
- return reply;
+
+ if (check_caps == 1)
+ ceph_check_caps(ci, CHECK_CAPS_NODELAY|CHECK_CAPS_AUTHONLY,
+ session);
+ else if (check_caps == 2)
+ ceph_check_caps(ci, CHECK_CAPS_NODELAY, session);
+ else
+ mutex_unlock(&session->s_mutex);
}
/*
u64 cap_id;
u64 size, max_size;
u64 tid;
- int check_caps = 0;
void *snaptrace;
- int r;
dout("handle_caps from mds%d\n", mds);
case CEPH_CAP_OP_IMPORT:
handle_cap_import(mdsc, inode, h, session,
snaptrace, le32_to_cpu(h->snap_trace_len));
- check_caps = 1; /* we may have sent a RELEASE to the old auth */
- goto done;
+ ceph_check_caps(ceph_inode(inode), CHECK_CAPS_NODELAY,
+ session);
+ goto done_unlocked;
}
/* the rest require a cap */
switch (op) {
case CEPH_CAP_OP_REVOKE:
case CEPH_CAP_OP_GRANT:
- r = handle_cap_grant(inode, h, session, cap, msg->middle);
- if (r == 1)
- ceph_check_caps(ceph_inode(inode),
- CHECK_CAPS_NODELAY|CHECK_CAPS_AUTHONLY,
- session);
- else if (r == 2)
- ceph_check_caps(ceph_inode(inode),
- CHECK_CAPS_NODELAY,
- session);
- break;
+ handle_cap_grant(inode, h, session, cap, msg->middle);
+ goto done_unlocked;
case CEPH_CAP_OP_FLUSH_ACK:
handle_cap_flush_ack(inode, tid, h, session, cap);
done:
mutex_unlock(&session->s_mutex);
-
- if (check_caps)
- ceph_check_caps(ceph_inode(inode), CHECK_CAPS_NODELAY, NULL);
+done_unlocked:
if (inode)
iput(inode);
return;
struct ceph_cap *cap;
struct ceph_mds_request_release *rel = *p;
int ret = 0;
-
- dout("encode_inode_release %p mds%d drop %s unless %s\n", inode,
- mds, ceph_cap_string(drop), ceph_cap_string(unless));
+ int used = 0;
spin_lock(&inode->i_lock);
+ used = __ceph_caps_used(ci);
+
+ dout("encode_inode_release %p mds%d used %s drop %s unless %s\n", inode,
+ mds, ceph_cap_string(used), ceph_cap_string(drop),
+ ceph_cap_string(unless));
+
+ /* only drop unused caps */
+ drop &= ~used;
+
cap = __get_cap_for_mds(ci, mds);
if (cap && __cap_is_valid(cap)) {
if (force ||