From 0f3bc09ee1b7fcadd5bfdc5ed2e1643f658fe23d Mon Sep 17 00:00:00 2001 From: Suresh Jayaraman Date: Thu, 25 Jun 2009 18:12:34 +0530 Subject: cifs: Fix incorrect return code being printed in cFYI messages FreeXid() along with freeing Xid does add a cifsFYI debug message that prints rc (return code) as well. In some code paths where we set/return error code after calling FreeXid(), incorrect error code is being printed when cifsFYI is enabled. This could be misleading in few cases. For eg. In cifs_open() if cifs_fill_filedata() returns a valid pointer to cifsFileInfo, FreeXid() prints rc=-13 whereas 0 is actually being returned. Fix this by setting rc before calling FreeXid(). Basically convert FreeXid(xid); rc = -ERR; return -ERR; => FreeXid(xid); return rc; [Note that Christoph would like to replace the GetXid/FreeXid calls, which are primarily used for debugging. This seems like a good longer term goal, but although there is an alternative tracing facility, there are no examples yet available that I know of that we can use (yet) to convert this cifs function entry/exit logging, and for creating an identifier that we can use to correlate all dmesg log entries for a particular vfs operation (ie identify all log entries for a particular vfs request to cifs: e.g. a particular close or read or write or byte range lock call ... and just using the thread id is harder). Eventually when a replacement for this is available (e.g. when NFS switches over and various samples to look at in other file systems) we can remove the GetXid/FreeXid macro but in the meantime multiple people use this run time configurable logging all the time for debugging, and Suresh's patch fixes a problem which made it harder to notice some low memory problems in the log so it is worthwhile to fix this problem until a better logging approach is able to be used] Acked-by: Jeff Layton Signed-off-by: Suresh Jayaraman Signed-off-by: Steve French --- fs/cifs/inode.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'fs/cifs/inode.c') diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index fad882b075ba..155c9e785d0c 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -988,8 +988,9 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry) * sb->s_vfs_rename_mutex here */ full_path = build_path_from_dentry(dentry); if (full_path == NULL) { + rc = -ENOMEM; FreeXid(xid); - return -ENOMEM; + return rc; } if ((tcon->ses->capabilities & CAP_UNIX) && @@ -1118,8 +1119,9 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) full_path = build_path_from_dentry(direntry); if (full_path == NULL) { + rc = -ENOMEM; FreeXid(xid); - return -ENOMEM; + return rc; } if ((pTcon->ses->capabilities & CAP_UNIX) && @@ -1303,8 +1305,9 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) full_path = build_path_from_dentry(direntry); if (full_path == NULL) { + rc = -ENOMEM; FreeXid(xid); - return -ENOMEM; + return rc; } rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, @@ -1508,8 +1511,9 @@ int cifs_revalidate(struct dentry *direntry) since that would deadlock */ full_path = build_path_from_dentry(direntry); if (full_path == NULL) { + rc = -ENOMEM; FreeXid(xid); - return -ENOMEM; + return rc; } cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " "jiffies %ld", full_path, direntry->d_inode, @@ -1911,8 +1915,9 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) full_path = build_path_from_dentry(direntry); if (full_path == NULL) { + rc = -ENOMEM; FreeXid(xid); - return -ENOMEM; + return rc; } /* -- cgit v1.2.3