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authorJeff Layton <jlayton@redhat.com>2009-09-12 11:54:29 -0400
committerSteve French <sfrench@us.ibm.com>2009-09-15 19:45:25 +0000
commit48541bd3dd4739b4d574b44ea47660c88d833677 (patch)
tree5ee6d16b924b8c171e66088c5bb3b1d1720cd29f
parent058daf4f6795fd23fcca41fe53151cdcbbd263ec (diff)
downloadop-kernel-dev-48541bd3dd4739b4d574b44ea47660c88d833677.zip
op-kernel-dev-48541bd3dd4739b4d574b44ea47660c88d833677.tar.gz
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>
-rw-r--r--fs/cifs/cifsglob.h4
-rw-r--r--fs/cifs/dir.c2
-rw-r--r--fs/cifs/file.c2
3 files changed, 5 insertions, 3 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 9a7527d..c19419a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -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);
+ }
}
/*
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 44f735a..3643550 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -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);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 225d127..b976cea 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -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
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