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cifs: have cifsFileInfo hold an extra inode reference 

It's possible that this struct will outlive the filp to which it is
attached. If it does and it needs to do some work on the inode, then
it'll need a reference.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2009-09-12 11:54:29 -04:00 committed by Steve French
parent 058daf4f67
commit 48541bd3dd
3 changed files with 5 additions and 3 deletions
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4
fs/cifs/cifsglob.h
View File

@ -365,8 +365,10 @@ static inline void cifsFileInfo_get(struct cifsFileInfo *cifs_file)
/* Release a reference on the file private data */
static inline void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
{
if (atomic_dec_and_test(&cifs_file->count))
if (atomic_dec_and_test(&cifs_file->count)) {
iput(cifs_file->pInode);
kfree(cifs_file);
}
}
/*

2
fs/cifs/dir.c
View File

@ -147,7 +147,7 @@ cifs_fill_fileinfo(struct inode *newinode, __u16 fileHandle,
pCifsFile->netfid = fileHandle;
pCifsFile->pid = current->tgid;
pCifsFile->pInode = newinode;
pCifsFile->pInode = igrab(newinode);
pCifsFile->invalidHandle = false;
pCifsFile->closePend = false;
mutex_init(&pCifsFile->fh_mutex);

2
fs/cifs/file.c
View File

@ -50,7 +50,7 @@ static inline struct cifsFileInfo *cifs_init_private(
mutex_init(&private_data->lock_mutex);
INIT_LIST_HEAD(&private_data->llist);
private_data->pfile = file; /* needed for writepage */
private_data->pInode = inode;
private_data->pInode = igrab(inode);
private_data->invalidHandle = false;
private_data->closePend = false;
/* Initialize reference count to one. The private data is