diff options
| -rw-r--r-- | fs/smb/client/cifsglob.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index f6ebd3fd176d..103c92442c28 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -1945,6 +1945,8 @@ require use of the stronger protocol */ */ /**************************************************************************** + * LOCK ORDERING NOTES: + **************************************************************************** * Here are all the locks (spinlock, mutex, semaphore) in cifs.ko, arranged according * to the locking order. i.e. if two locks are to be held together, the lock that * appears higher in this list needs to be taken before the other. @@ -1973,18 +1975,21 @@ require use of the stronger protocol */ * ===================================================================================== * Lock Protects Initialization fn * ===================================================================================== + * cifs_mount_mutex mount/unmount operations * vol_list_lock * vol_info->ctx_lock vol_info->ctx * cifs_sb_info->tlink_tree_lock cifs_sb_info->tlink_tree cifs_setup_cifs_sb * TCP_Server_Info-> TCP_Server_Info cifs_get_tcp_session * reconnect_mutex - * TCP_Server_Info->srv_mutex TCP_Server_Info cifs_get_tcp_session * cifs_ses->session_mutex cifs_ses sesInfoAlloc + * TCP_Server_Info->srv_mutex TCP_Server_Info cifs_get_tcp_session + * cifs_tcp_ses_lock cifs_tcp_ses_list sesInfoAlloc * cifs_tcon->open_file_lock cifs_tcon->openFileList tconInfoAlloc * cifs_tcon->pending_opens * cifs_tcon->stat_lock cifs_tcon->bytes_read tconInfoAlloc * cifs_tcon->bytes_written - * cifs_tcp_ses_lock cifs_tcp_ses_list sesInfoAlloc + * cifs_tcon->fscache_lock cifs_tcon->fscache tconInfoAlloc + * cifs_tcon->sb_list_lock cifs_tcon->cifs_sb_list tconInfoAlloc * GlobalMid_Lock GlobalMaxActiveXid init_cifs * GlobalCurrentXid * GlobalTotalActiveXid @@ -2007,6 +2012,8 @@ require use of the stronger protocol */ * ->chans_in_reconnect * cifs_tcon->tc_lock (anything that is not protected by another lock and can change) * tcon_info_alloc + * cifs_swnreg_idr_mutex cifs_swnreg_idr cifs_swn.c + * (witness service registration, accesses tcon fields under tc_lock) * inode->i_rwsem, taken by fs/netfs/locking.c e.g. should be taken before cifsInodeInfo locks * cifsInodeInfo->open_file_lock cifsInodeInfo->openFileList cifs_alloc_inode * cifsInodeInfo->writers_lock cifsInodeInfo->writers cifsInodeInfo_alloc @@ -2014,12 +2021,12 @@ require use of the stronger protocol */ * ->can_cache_brlcks * cifsInodeInfo->deferred_lock cifsInodeInfo->deferred_closes cifsInodeInfo_alloc * cached_fids->cfid_list_lock cifs_tcon->cfids->entries init_cached_dirs - * cached_fid->fid_lock (anything that is not protected by another lock and can change) - * init_cached_dir + * cached_fid->dirents.de_mutex cached_fid->dirents alloc_cached_dir * cifsFileInfo->fh_mutex cifsFileInfo cifs_new_fileinfo * cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo * ->invalidHandle initiate_cifs_search * ->oplock_break_cancelled + * smbdirect_mr->mutex RDMA memory region management (SMBDirect only) * mid_q_entry->mid_lock mid_q_entry->callback alloc_mid * smb2_mid_entry_alloc * (Any fields of mid_q_entry that will need protection) |