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ceph: don't WARN if we're forcibly removing the session caps

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For example in the case of a forced umount, we'll remove all the session
caps even if they are dirty. Move the warning to a wrapper function and
make most of the callers use it. Call the core function when removing
caps due to a forced umount.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li 2021-08-25 21:45:45 +08:00 committed by Ilya Dryomov
parent 42ad631b4d
commit a76d0a9c28
3 changed files with 32 additions and 10 deletions
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39
fs/ceph/caps.c
View File

@ -1114,17 +1114,16 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
return;
}
lockdep_assert_held(&ci->i_ceph_lock);
dout("__ceph_remove_cap %p from %p\n", cap, &ci->vfs_inode);
mdsc = ceph_inode_to_client(&ci->vfs_inode)->mdsc;
/* remove from inode's cap rbtree, and clear auth cap */
rb_erase(&cap->ci_node, &ci->i_caps);
if (ci->i_auth_cap == cap) {
WARN_ON_ONCE(!list_empty(&ci->i_dirty_item) &&
!mdsc->fsc->blocklisted);
if (ci->i_auth_cap == cap)
ci->i_auth_cap = NULL;
}
/* remove from session list */
spin_lock(&session->s_cap_lock);
@ -1176,6 +1175,28 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
}
}
void ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
{
struct ceph_inode_info *ci = cap->ci;
struct ceph_fs_client *fsc;
/* 'ci' being NULL means the remove have already occurred */
if (!ci) {
dout("%s: cap inode is NULL\n", __func__);
return;
}
lockdep_assert_held(&ci->i_ceph_lock);
fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
WARN_ON_ONCE(ci->i_auth_cap == cap &&
!list_empty(&ci->i_dirty_item) &&
!fsc->blocklisted &&
READ_ONCE(fsc->mount_state) != CEPH_MOUNT_SHUTDOWN);
__ceph_remove_cap(cap, queue_release);
}
struct cap_msg_args {
struct ceph_mds_session *session;
u64 ino, cid, follows;
@ -1304,7 +1325,7 @@ void __ceph_remove_caps(struct ceph_inode_info *ci)
while (p) {
struct ceph_cap *cap = rb_entry(p, struct ceph_cap, ci_node);
p = rb_next(p);
__ceph_remove_cap(cap, true);
ceph_remove_cap(cap, true);
}
spin_unlock(&ci->i_ceph_lock);
}
@ -3822,7 +3843,7 @@ retry:
goto out_unlock;
if (target < 0) {
__ceph_remove_cap(cap, false);
ceph_remove_cap(cap, false);
goto out_unlock;
}
@ -3857,7 +3878,7 @@ retry:
change_auth_cap_ses(ci, tcap->session);
}
}
__ceph_remove_cap(cap, false);
ceph_remove_cap(cap, false);
goto out_unlock;
} else if (tsession) {
/* add placeholder for the export tagert */
@ -3874,7 +3895,7 @@ retry:
spin_unlock(&mdsc->cap_dirty_lock);
}
__ceph_remove_cap(cap, false);
ceph_remove_cap(cap, false);
goto out_unlock;
}
@ -3985,7 +4006,7 @@ retry:
ocap->mseq, mds, le32_to_cpu(ph->seq),
le32_to_cpu(ph->mseq));
}
__ceph_remove_cap(ocap, (ph->flags & CEPH_CAP_FLAG_RELEASE));
ceph_remove_cap(ocap, (ph->flags & CEPH_CAP_FLAG_RELEASE));
}
*old_issued = issued;

2
fs/ceph/mds_client.c
View File

@ -2016,7 +2016,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
if (oissued) {
/* we aren't the only cap.. just remove us */
__ceph_remove_cap(cap, true);
ceph_remove_cap(cap, true);
(*remaining)--;
} else {
struct dentry *dentry;

1
fs/ceph/super.h
View File

@ -1138,6 +1138,7 @@ extern void ceph_add_cap(struct inode *inode,
unsigned cap, unsigned seq, u64 realmino, int flags,
struct ceph_cap **new_cap);
extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release);
extern void ceph_remove_cap(struct ceph_cap *cap, bool queue_release);
extern void __ceph_remove_caps(struct ceph_inode_info *ci);
extern void ceph_put_cap(struct ceph_mds_client *mdsc,
struct ceph_cap *cap);