Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Check return code on failed alloc
  [CIFS] Update CIFS project web site
  [CIFS] Fix hang in find_writable_file
This commit is contained in:
Linus Torvalds 2007-08-18 09:30:07 -07:00
commit edd5f25f74
6 changed files with 46 additions and 14 deletions

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@ -1009,7 +1009,7 @@ P: Steve French
M: sfrench@samba.org
L: linux-cifs-client@lists.samba.org
L: samba-technical@lists.samba.org
W: http://us1.samba.org/samba/Linux_CIFS_client.html
W: http://linux-cifs.samba.org/
T: git kernel.org:/pub/scm/linux/kernel/git/sfrench/cifs-2.6.git
S: Supported

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@ -3,7 +3,10 @@ Version 1.50
Fix NTLMv2 signing. NFS server mounted over cifs works (if cifs mount is
done with "serverino" mount option). Add support for POSIX Unlink
(helps with certain sharing violation cases when server such as
Samba supports newer POSIX CIFS Protocol Extensions).
Samba supports newer POSIX CIFS Protocol Extensions). Add "nounix"
mount option to allow disabling the CIFS Unix Extensions for just
that mount. Fix hang on spinlock in find_writable_file (race when
reopening file after session crash).
Version 1.49
------------

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@ -444,6 +444,13 @@ A partial list of the supported mount options follows:
noposixpaths If CIFS Unix extensions are supported, do not request
posix path name support (this may cause servers to
reject creatingfile with certain reserved characters).
nounix Disable the CIFS Unix Extensions for this mount (tree
connection). This is rarely needed, but it may be useful
in order to turn off multiple settings all at once (ie
posix acls, posix locks, posix paths, symlink support
and retrieving uids/gids/mode from the server) or to
work around a bug in server which implement the Unix
Extensions.
nobrl Do not send byte range lock requests to the server.
This is necessary for certain applications that break
with cifs style mandatory byte range locks (and most
@ -451,6 +458,12 @@ A partial list of the supported mount options follows:
byte range locks).
remount remount the share (often used to change from ro to rw mounts
or vice versa)
servern Specify the server 's netbios name (RFC1001 name) to use
when attempting to setup a session to the server. This is
This is needed for mounting to some older servers (such
as OS/2 or Windows 98 and Windows ME) since they do not
support a default server name. A server name can be up
to 15 characters long and is usually uppercased.
sfu When the CIFS Unix Extensions are not negotiated, attempt to
create device files and fifos in a format compatible with
Services for Unix (SFU). In addition retrieve bits 10-12

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@ -82,8 +82,7 @@ u) DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for
v) mount check for unmatched uids
w) Add mount option for Linux extension disable per mount, and partial
disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?)
w) Add support for new vfs entry points for setlease and fallocate
x) Fix Samba 3 server to handle Linux kernel aio so dbench with lots of
processes can proceed better in parallel (on the server)

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@ -1904,6 +1904,25 @@ static int cifs_readpage(struct file *file, struct page *page)
return rc;
}
static int is_inode_writable(struct cifsInodeInfo *cifs_inode)
{
struct cifsFileInfo *open_file;
read_lock(&GlobalSMBSeslock);
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (open_file->closePend)
continue;
if (open_file->pfile &&
((open_file->pfile->f_flags & O_RDWR) ||
(open_file->pfile->f_flags & O_WRONLY))) {
read_unlock(&GlobalSMBSeslock);
return 1;
}
}
read_unlock(&GlobalSMBSeslock);
return 0;
}
/* We do not want to update the file size from server for inodes
open for write - to avoid races with writepage extending
the file - in the future we could consider allowing
@ -1912,19 +1931,13 @@ static int cifs_readpage(struct file *file, struct page *page)
page caching in the current Linux kernel design */
int is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 end_of_file)
{
struct cifsFileInfo *open_file = NULL;
if (!cifsInode)
return 1;
if (cifsInode)
open_file = find_writable_file(cifsInode);
if (open_file) {
if (is_inode_writable(cifsInode)) {
/* This inode is open for write at least once */
struct cifs_sb_info *cifs_sb;
/* there is not actually a write pending so let
this handle go free and allow it to
be closable if needed */
atomic_dec(&open_file->wrtPending);
cifs_sb = CIFS_SB(cifsInode->vfs_inode.i_sb);
if ( cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO ) {
/* since no page cache to corrupt on directio

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@ -372,6 +372,10 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
/* 2000 big enough to fit max user, domain, NOS name etc. */
str_area = kmalloc(2000, GFP_KERNEL);
if (str_area == NULL) {
cifs_small_buf_release(smb_buf);
return -ENOMEM;
}
bcc_ptr = str_area;
ses->flags &= ~CIFS_SES_LANMAN;