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  1. 15 3月, 2008 2 次提交
    • S
      [CIFS] file create with acl support enabled is slow · 8b1327f6
      由 Steve French 提交于 
      Shirish Pargaonkar noted:
With cifsacl mount option, when a file is created on the Windows server,
exclusive oplock is broken right away because the get cifs acl code
again opens the file to obtain security descriptor.
The client does not have the newly created file handle or inode in any
of its lists yet so it does not respond to oplock break and server waits for
its duration and then responds to the second open. This slows down file
creation signficantly.  The fix is to pass the file descriptor to the get
cifsacl code wherever available so that get cifs acl code does not send
second open (NT Create ANDX) and oplock is not broken.

CC: Shirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      8b1327f6
    • S
      [CIFS] Fix mtime on cp -p when file data cached but written out too late · 50531444
      由 Steve French 提交于 
      Kukks noticed that cp -p can write out file data too late, after the timestamp
is already set.  This was introduced as an unintentional sideeffect of the change
in an earlier patch (see below) which fixed some delayed return code propagation.

cea21805
Author: Jeff Layton <jlayton@redhat.com>
Date:   Tue Nov 20 23:19:03 2007 +0000
Acked-by: NShirish Pargaonkar <shirishp@us.ibm.com>
Acked-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      50531444
  3. 14 3月, 2008 1 次提交
  5. 12 3月, 2008 2 次提交
  7. 11 3月, 2008 12 次提交
  9. 09 3月, 2008 1 次提交
  11. 08 3月, 2008 4 次提交
    • T
      NFS: Fix dentry revalidation for NFSv4 referrals and mountpoint crossings · 4e99a1ff
      由 Trond Myklebust 提交于 
      As long as the directory contents haven't changed, we should just let the
path walk proceed to cross the mountpoint. Apart from being an optimisation
in the case of 'nohide' mountpoint traversals, it also fixes an issue with
referrals: referral inodes don't have valid filehandles, so calling
nfs_revalidate_inode() on them is a bug.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
      4e99a1ff
    • T
      NFS: Fix the fsid revalidation in nfs_update_inode() · c37dcd33
      由 Trond Myklebust 提交于 
      When we detect that we've crossed a mountpoint on the remote server, we
must take care not to use that inode to revalidate the fsid on our
current superblock. To do so, we label the inode as a remote mountpoint,
and check for that in nfs_update_inode().
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
      c37dcd33
    • T
      NFS: Fix an f_mode/f_flags confusion in fs/nfs/write.c · af1b8c2f
      由 Trond Myklebust 提交于 
      O_SYNC is stored in filp->f_flags.
Thanks to Al Viro for pointing out the bug.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
      af1b8c2f
    • P
      [NET]: Make /proc/net a symlink on /proc/self/net (v3) · e9720acd
      由 Pavel Emelyanov 提交于 
      Current /proc/net is done with so called "shadows", but current
implementation is broken and has little chances to get fixed.

The problem is that dentries subtree of /proc/net directory has
fancy revalidation rules to make processes living in different
net namespaces see different entries in /proc/net subtree, but
currently, tasks see in the /proc/net subdir the contents of any
other namespace, depending on who opened the file first.

The proposed fix is to turn /proc/net into a symlink, which points
to /proc/self/net, which in turn shows what previously was in
/proc/net - the network-related info, from the net namespace the
appropriate task lives in.

# ls -l /proc/net
lrwxrwxrwx  1 root root 8 Mar  5 15:17 /proc/net -> self/net

In other words - this behaves like /proc/mounts, but unlike
"mounts", "net" is not a file, but a directory.

Changes from v2:
* Fixed discrepancy of /proc/net nlink count and selinux labeling
  screwup pointed out by Stephen.

  To get the correct nlink count the ->getattr callback for /proc/net
  is overridden to read one from the net->proc_net entry.

  To make selinux still work the net->proc_net entry is initialized
  properly, i.e. with the "net" name and the proc_net parent.

Selinux fixes are
Acked-by: NStephen Smalley <sds@tycho.nsa.gov>

Changes from v1:
* Fixed a task_struct leak in get_proc_task_net, pointed out by Paul.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e9720acd
  13. 06 3月, 2008 4 次提交
    • D
      [XFS] fix inode leak in xfs_iget_core() · 72772a3b
      由 David Chinner 提交于 
      If the radix_tree_preload() fails, we need to destroy the inode we just
read in before trying again. This could leak xfs_vnode structures when
there is memory pressure. Noticed by Christoph Hellwig.

SGI-PV: 977823
SGI-Modid: xfs-linux-melb:xfs-kern:30606a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NChristoph Hellwig <hch@infradead.org>
      72772a3b
    • D
      [XFS] 977545 977545 977545 977545 977545 977545 xfsaild causing too many · 92d9cd10
      由 David Chinner 提交于 
      wakeups

Idle state is not being detected properly by the xfsaild push code. The
current idle state is detected by an empty list which may never happen
with mostly idle filesystem or one using lazy superblock counters. A
single dirty item in the list that exists beyond the push target can
result repeated looping attempting to push up to the target because it
fails to check if the push target has been acheived or not.

Fix by considering a dirty list with everything past the target as an idle
state and set the timeout appropriately.

SGI-PV: 977545
SGI-Modid: xfs-linux-melb:xfs-kern:30532a
Signed-off-by: NDavid Chinner <dgc@sgi.com>
Signed-off-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
      92d9cd10
    • E
      NFS: use new LSM interfaces to explicitly set mount options · f9c3a380
      由 Eric Paris 提交于 
      NFS and SELinux worked together previously because SELinux had NFS
specific knowledge built in.  This design was approved by both groups
back in 2004 but the recent NFS changes to use nfs_parsed_mount_data and
the usage of nfs_clone_mount_data showed this to be a poor fragile
solution.  This patch fixes the NFS functionality regression by making
use of the new LSM interfaces to allow an FS to explicitly set its own
mount options.

The explicit setting of mount options is done in the nfs get_sb
functions which are called before the generic vfs hooks try to set mount
options for filesystems which use text mount data.

This does not currently support NFSv4 as that functionality did not
exist in previous kernels and thus there is no regression.  I will be
adding the needed code, which I believe to be the exact same as the v3
code, in nfs4_get_sb for 2.6.26.
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: NJames Morris <jmorris@namei.org>
      f9c3a380
    • E
      LSM/SELinux: Interfaces to allow FS to control mount options · e0007529
      由 Eric Paris 提交于 
      Introduce new LSM interfaces to allow an FS to deal with their own mount
options.  This includes a new string parsing function exported from the
LSM that an FS can use to get a security data blob and a new security
data blob.  This is particularly useful for an FS which uses binary
mount data, like NFS, which does not pass strings into the vfs to be
handled by the loaded LSM.  Also fix a BUG() in both SELinux and SMACK
when dealing with binary mount data.  If the binary mount data is less
than one page the copy_page() in security_sb_copy_data() can cause an
illegal page fault and boom.  Remove all NFSisms from the SELinux code
since they were broken by past NFS changes.
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NStephen Smalley <sds@tycho.nsa.gov>
Acked-by: NCasey Schaufler <casey@schaufler-ca.com>
Signed-off-by: NJames Morris <jmorris@namei.org>
      e0007529
  15. 05 3月, 2008 6 次提交
  17. 04 3月, 2008 8 次提交