diff options
Diffstat (limited to 'fs/ceph/dir.c')
| -rw-r--r-- | fs/ceph/dir.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 133dbd9338e7..eae417d71136 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -145,7 +145,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx, return ERR_PTR(-EAGAIN); } /* reading/filling the cache are serialized by - i_mutex, no need to use page lock */ + i_rwsem, no need to use page lock */ unlock_page(cache_ctl->page); cache_ctl->dentries = kmap(cache_ctl->page); } @@ -155,7 +155,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx, rcu_read_lock(); spin_lock(&parent->d_lock); /* check i_size again here, because empty directory can be - * marked as complete while not holding the i_mutex. */ + * marked as complete while not holding the i_rwsem. */ if (ceph_dir_is_complete_ordered(dir) && ptr_pos < i_size_read(dir)) dentry = cache_ctl->dentries[cache_ctl->index]; else @@ -478,8 +478,11 @@ more: 2 : (fpos_off(rde->offset) + 1); err = note_last_dentry(dfi, rde->name, rde->name_len, next_offset); - if (err) + if (err) { + ceph_mdsc_put_request(dfi->last_readdir); + dfi->last_readdir = NULL; return err; + } } else if (req->r_reply_info.dir_end) { dfi->next_offset = 2; /* keep last name */ @@ -520,6 +523,12 @@ more: if (!dir_emit(ctx, rde->name, rde->name_len, ceph_present_ino(inode->i_sb, le64_to_cpu(rde->inode.in->ino)), le32_to_cpu(rde->inode.in->mode) >> 12)) { + /* + * NOTE: Here no need to put the 'dfi->last_readdir', + * because when dir_emit stops us it's most likely + * doesn't have enough memory, etc. So for next readdir + * it will continue. + */ dout("filldir stopping us...\n"); return 0; } @@ -671,7 +680,7 @@ struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req, struct dentry *dentry) { struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); - struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */ + struct inode *parent = d_inode(dentry->d_parent); /* we hold i_rwsem */ /* .snap dir? */ if (ceph_snap(parent) == CEPH_NOSNAP && |