redonkable/remarkable-linux
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[CIFS] Fix double list addition in cifs posix open code

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Remove adding open file entry twice to lists in the file
Do not fill file info twice in case of posix opens and creates

Signed-off-by: Shirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2009-05-08 03:04:30 +00:00
parent ac68392460
commit 90e4ee5d31
2 changed files with 9 additions and 20 deletions
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15
fs/cifs/dir.c
View file

@ -281,6 +281,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
int create_options = CREATE_NOT_DIR;
int oplock = 0;
int oflags;
bool posix_create = false;
/*
* BB below access is probably too much for mknod to request
* but we have to do query and setpathinfo so requesting
@ -328,11 +329,13 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
negotation. EREMOTE indicates DFS junction, which is not
handled in posix open */
if ((rc == 0) && (newinode == NULL))
goto cifs_create_get_file_info; /* query inode info */
else if (rc == 0) /* success, no need to query */
goto cifs_create_set_dentry;
else if ((rc != -EIO) && (rc != -EREMOTE) &&
if (rc == 0) {
posix_create = true;
if (newinode == NULL) /* query inode info */
goto cifs_create_get_file_info;
else /* success, no need to query */
goto cifs_create_set_dentry;
} else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP)) /* path not found or net err */
goto cifs_create_out;
/* else fallthrough to retry, using older open call, this is
@ -464,7 +467,7 @@ cifs_create_set_dentry:
if ((nd == NULL) || (!(nd->flags & LOOKUP_OPEN))) {
/* mknod case - do not leave file open */
CIFSSMBClose(xid, tcon, fileHandle);
} else if (newinode) {
} else if (!(posix_create) && (newinode)) {
cifs_fill_fileinfo(newinode, fileHandle,
cifs_sb->tcon, write_only);
}

14
fs/cifs/file.c
View file

@ -129,15 +129,12 @@ static inline int cifs_posix_open_inode_helper(struct inode *inode,
struct file *file, struct cifsInodeInfo *pCifsInode,
struct cifsFileInfo *pCifsFile, int oplock, u16 netfid)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
/* struct timespec temp; */ /* BB REMOVEME BB */
file->private_data = kmalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
if (file->private_data == NULL)
return -ENOMEM;
pCifsFile = cifs_init_private(file->private_data, inode, file, netfid);
write_lock(&GlobalSMBSeslock);
list_add(&pCifsFile->tlist, &cifs_sb->tcon->openFileList);
pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
if (pCifsInode == NULL) {
@ -145,17 +142,6 @@ static inline int cifs_posix_open_inode_helper(struct inode *inode,
return -EINVAL;
}
/* want handles we can use to read with first
in the list so we do not have to walk the
list to search for one in write_begin */
if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
list_add_tail(&pCifsFile->flist,
&pCifsInode->openFileList);
} else {
list_add(&pCifsFile->flist,
&pCifsInode->openFileList);
}
if (pCifsInode->clientCanCacheRead) {
/* we have the inode open somewhere else
no need to discard cache data */