Bug #12160 » 0001-ceph-keep-i_snap_realm-while-there-are-writers.patch
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return ret;
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}
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static void drop_inode_snap_realm(struct ceph_inode_info *ci)
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{
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struct ceph_snap_realm *realm = ci->i_snap_realm;
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spin_lock(&realm->inodes_with_caps_lock);
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list_del_init(&ci->i_snap_realm_item);
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ci->i_snap_realm_counter++;
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ci->i_snap_realm = NULL;
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spin_unlock(&realm->inodes_with_caps_lock);
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ceph_put_snap_realm(ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc,
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realm);
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}
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/*
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* Remove a cap. Take steps to deal with a racing iterate_session_caps.
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*
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| ... | ... | |
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if (removed)
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ceph_put_cap(mdsc, cap);
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if (!__ceph_is_any_caps(ci) && ci->i_snap_realm) {
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struct ceph_snap_realm *realm = ci->i_snap_realm;
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spin_lock(&realm->inodes_with_caps_lock);
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list_del_init(&ci->i_snap_realm_item);
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ci->i_snap_realm_counter++;
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ci->i_snap_realm = NULL;
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spin_unlock(&realm->inodes_with_caps_lock);
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ceph_put_snap_realm(mdsc, realm);
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}
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/* when reconnect denied, we remove session caps forcibly,
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* i_wr_ref can be non-zero. If there are ongoing write,
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* keep i_snap_realm.
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*/
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if (!__ceph_is_any_caps(ci) && ci->i_wr_ref == 0 && ci->i_snap_realm)
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drop_inode_snap_realm(ci);
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if (!__ceph_is_any_real_caps(ci))
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__cap_delay_cancel(mdsc, ci);
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}
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| ... | ... | |
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wake = 1;
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}
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}
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/* see comment in __ceph_remove_cap() */
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if (!__ceph_is_any_caps(ci) && ci->i_snap_realm)
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drop_inode_snap_realm(ci);
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}
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spin_unlock(&ci->i_ceph_lock);
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