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authorDavid S. Miller <davem@davemloft.net>2019-06-22 08:59:24 -0400
committerDavid S. Miller <davem@davemloft.net>2019-06-22 08:59:24 -0400
commit92ad6325cb891bb455487bfe90cc47d18aa6ec37 (patch)
tree433a7ef938fae69789216043f67eff9f9c6b0c68 /fs/cifs/cifsglob.h
parente0effb5fbd56a8b2b8917611cbf4fcd9aba92b8f (diff)
parentc356dc4b540edd6c02b409dd8cf3208ba2804c38 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor SPDX change conflict. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/cifs/cifsglob.h')
-rw-r--r--fs/cifs/cifsglob.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 334ff5f9c3f3..4777b3c4a92c 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1377,6 +1377,7 @@ struct cifsInodeInfo {
struct rw_semaphore lock_sem; /* protect the fields above */
/* BB add in lists for dirty pages i.e. write caching info for oplock */
struct list_head openFileList;
+ spinlock_t open_file_lock; /* protects openFileList */
__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
unsigned int oplock; /* oplock/lease level we have */
unsigned int epoch; /* used to track lease state changes */
@@ -1780,10 +1781,14 @@ require use of the stronger protocol */
* tcp_ses_lock protects:
* list operations on tcp and SMB session lists
* tcon->open_file_lock protects the list of open files hanging off the tcon
+ * inode->open_file_lock protects the openFileList hanging off the inode
* cfile->file_info_lock protects counters and fields in cifs file struct
* f_owner.lock protects certain per file struct operations
* mapping->page_lock protects certain per page operations
*
+ * Note that the cifs_tcon.open_file_lock should be taken before
+ * not after the cifsInodeInfo.open_file_lock
+ *
* Semaphores
* ----------
* sesSem operations on smb session