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cifs: have cifsFileInfo hold an extra inode reference

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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