[PATCH 5/7] cifs: helper function to check replayable error codes

[nspmangalore@gmail.com]

From: Shyam Prasad N <sprasad@microsoft.com>

The code to check for replay is not just -EAGAIN. In some
cases, the send request or receive response may result in
network errors, which we're now mapping to -ECONNABORTED.

This change introduces a helper function which checks
if the error returned in one of the above two errors.
And all checks for replays will now use this helper.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
---
 fs/smb/client/cached_dir.c | 1 +
 fs/smb/client/cifsglob.h   | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index 971892620504..5730c65ffb40 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -367,6 +367,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
 		atomic_inc(&tcon->num_remote_opens);
 	}
 	kfree(utf16_path);
+
 	return rc;
 }
 
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 20036fb16cec..6e4cfaec98e3 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1831,6 +1831,13 @@ static inline bool is_retryable_error(int error)
 	return false;
 }
 
+static inline bool is_replayable_error(int error)
+{
+	if (error == -EAGAIN || error == -ECONNABORTED)
+		return true;
+	return false;
+}
+
 
 /* cifs_get_writable_file() flags */
 #define FIND_WR_ANY         0
-- 
2.34.1