diff options
| author | Yan, Zheng <zyan@redhat.com> | 2016-03-07 09:35:06 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-07-28 02:55:38 +0200 |
| commit | 779fe0fb8e1883d5c479ac6bd85fbd237deed1f7 (patch) | |
| tree | ce9876a5f4201a7aa9f2daef838ccf7ff1827128 /fs/ceph/inode.c | |
| parent | cd08e0a274ba6215b79c83809b331e8af17196ba (diff) | |
ceph: rados pool namespace support
This patch adds codes that decode pool namespace information in
cap message and request reply. Pool namespace is saved in i_layout,
it will be passed to libceph when doing read/write.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/inode.c')
| -rw-r--r-- | fs/ceph/inode.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index d035e0ab6029..dc032566ed71 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -447,7 +447,6 @@ struct inode *ceph_alloc_inode(struct super_block *sb) memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); - ci->i_pool_ns_len = 0; ci->i_fragtree = RB_ROOT; mutex_init(&ci->i_fragtree_mutex); @@ -571,7 +570,7 @@ void ceph_destroy_inode(struct inode *inode) if (ci->i_xattrs.prealloc_blob) ceph_buffer_put(ci->i_xattrs.prealloc_blob); - ceph_put_string(ci->i_layout.pool_ns); + ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); call_rcu(&inode->i_rcu, ceph_i_callback); } @@ -736,6 +735,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page, int issued = 0, implemented, new_issued; struct timespec mtime, atime, ctime; struct ceph_buffer *xattr_blob = NULL; + struct ceph_string *pool_ns = NULL; struct ceph_cap *new_cap = NULL; int err = 0; bool wake = false; @@ -763,6 +763,10 @@ static int fill_inode(struct inode *inode, struct page *locked_page, iinfo->xattr_len); } + if (iinfo->pool_ns_len > 0) + pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, + iinfo->pool_ns_len); + spin_lock(&ci->i_ceph_lock); /* @@ -818,11 +822,18 @@ static int fill_inode(struct inode *inode, struct page *locked_page, if (new_version || (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { s64 old_pool = ci->i_layout.pool_id; + struct ceph_string *old_ns; + ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); - ci->i_pool_ns_len = iinfo->pool_ns_len; - if (ci->i_layout.pool_id != old_pool) + old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, + lockdep_is_held(&ci->i_ceph_lock)); + rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); + + if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; + pool_ns = old_ns; + queue_trunc = ceph_fill_file_size(inode, issued, le32_to_cpu(info->truncate_seq), le64_to_cpu(info->truncate_size), @@ -989,6 +1000,7 @@ out: ceph_put_cap(mdsc, new_cap); if (xattr_blob) ceph_buffer_put(xattr_blob); + ceph_put_string(pool_ns); return err; } |