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[CIFS] Remove unnecessary checks 

file->f_path.dentry or file->f_path.dentry.d_inode can't be NULL since at
least ten years, similar for all but very few arguments passed in from the
VFS.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Christoph Hellwig 2007-04-02 18:47:20 +00:00 committed by Steve French
parent 2e175a9004
commit c33f8d3274
3 changed files with 6 additions and 53 deletions
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3
fs/cifs/cifsfs.c
View File

@ -529,8 +529,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
/* some applications poll for the file length in this strange
way so we must seek to end on non-oplocked files by
setting the revalidate time to zero */
if(file->f_path.dentry->d_inode)
CIFS_I(file->f_path.dentry->d_inode)->time = 0;
CIFS_I(file->f_path.dentry->d_inode)->time = 0;
retval = cifs_revalidate(file->f_path.dentry);
if (retval < 0)

29
fs/cifs/file.c
View File

@ -792,12 +792,7 @@ ssize_t cifs_user_write(struct file *file, const char __user *write_data,
int xid, long_op;
struct cifsFileInfo *open_file;
if (file->f_path.dentry == NULL)
return -EBADF;
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
if (cifs_sb == NULL)
return -EBADF;
pTcon = cifs_sb->tcon;
@ -807,14 +802,9 @@ ssize_t cifs_user_write(struct file *file, const char __user *write_data,
if (file->private_data == NULL)
return -EBADF;
else
open_file = (struct cifsFileInfo *) file->private_data;
open_file = (struct cifsFileInfo *) file->private_data;
xid = GetXid();
if (file->f_path.dentry->d_inode == NULL) {
FreeXid(xid);
return -EBADF;
}
if (*poffset > file->f_path.dentry->d_inode->i_size)
long_op = 2; /* writes past end of file can take a long time */
@ -908,12 +898,7 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
int xid, long_op;
struct cifsFileInfo *open_file;
if (file->f_path.dentry == NULL)
return -EBADF;
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
if (cifs_sb == NULL)
return -EBADF;
pTcon = cifs_sb->tcon;
@ -922,14 +907,9 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
if (file->private_data == NULL)
return -EBADF;
else
open_file = (struct cifsFileInfo *)file->private_data;
open_file = (struct cifsFileInfo *)file->private_data;
xid = GetXid();
if (file->f_path.dentry->d_inode == NULL) {
FreeXid(xid);
return -EBADF;
}
if (*poffset > file->f_path.dentry->d_inode->i_size)
long_op = 2; /* writes past end of file can take a long time */
@ -957,11 +937,6 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
return -EBADF;
}
if (open_file->invalidHandle) {
if ((file->f_path.dentry == NULL) ||
(file->f_path.dentry->d_inode == NULL)) {
FreeXid(xid);
return total_written;
}
/* we could deadlock if we called
filemap_fdatawait from here so tell
reopen_file not to flush data to

27
fs/cifs/readdir.c
View File

@ -444,9 +444,6 @@ static int initiate_cifs_search(const int xid, struct file *file)
cifsFile->invalidHandle = TRUE;
cifsFile->srch_inf.endOfSearch = FALSE;
if(file->f_path.dentry == NULL)
return -ENOENT;
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
if(cifs_sb == NULL)
return -EINVAL;
@ -618,20 +615,10 @@ static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
whether we can use the cached search results from the previous search */
static int is_dir_changed(struct file * file)
{
struct inode * inode;
struct cifsInodeInfo *cifsInfo;
struct inode *inode = file->f_path.dentry->d_inode;
struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
if(file->f_path.dentry == NULL)
return 0;
inode = file->f_path.dentry->d_inode;
if(inode == NULL)
return 0;
cifsInfo = CIFS_I(inode);
if(cifsInfo->time == 0)
if (cifsInfo->time == 0)
return 1; /* directory was changed, perhaps due to unlink */
else
return 0;
@ -851,9 +838,6 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
if((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL))
return -ENOENT;
if(file->f_path.dentry == NULL)
return -ENOENT;
rc = cifs_entry_is_dot(pfindEntry,pCifsF);
/* skip . and .. since we added them first */
if(rc != 0)
@ -997,11 +981,6 @@ int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
xid = GetXid();
if(file->f_path.dentry == NULL) {
FreeXid(xid);
return -EIO;
}
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
pTcon = cifs_sb->tcon;
if(pTcon == NULL)