Skip to content

cloud-kernel
cloud-kernel

openanolis / cloud-kernel
大约 1 年 前同步成功

通知 158
Star 36
Fork 7
cloud-kernel
cloud-kernel

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 21 5月, 2008 1 次提交
  3. 20 5月, 2008 1 次提交
  5. 17 5月, 2008 3 次提交
  7. 16 5月, 2008 2 次提交
  9. 15 5月, 2008 6 次提交
  11. 14 5月, 2008 1 次提交
    • S
      [CIFS] don't explicitly do a FindClose on rewind when directory search has ended · 77c57ec8
      由 Steve French 提交于 
      Do the following series of operations on a CIFS share:

    opendir(dir)
    readdir(dir)
    unlink(file in dir)
    rewinddir(dir)
    readdir(dir)

If the readdir read all entries in the directory this will make CIFS throw an error like this:

     CIFS VFS: Send error in FindClose = -9

CIFS requests "Close at end of search" of the server by setting this bit when issuing FindFirst or FindNext.  Therefore when all search entries are returned, the server may return "end of search" and close the search implicitly when this bit is set by the client on the request.  We check for this when a readdir is explicitly closed - but when the client notices that a directory has changed after the last operation, we attempt to close the directory before reopening by reissuing a second FindFirst. But, the directory may already been implicitly closed (due to end of search) because the first readdir finished. So we only want to issue a FindClose call in this case when we don't expect it to already be closed.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      77c57ec8
  13. 13 5月, 2008 4 次提交
    • S
      [CIFS] cleanup old checkpatch warnings · 582d21e5
      由 Steve French 提交于 
      Signed-off-by: NSteve French <sfrench@us.ibm.com>
      582d21e5
    • M
      [CIFS] CIFSSMBPosixLock should return -EINVAL on error · ed5f0370
      由 Marcin Slusarz 提交于 
      all other codepaths in this function return negative values on errors
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      ed5f0370
    • J
      fix memory leak in CIFSFindNext · 6353450a
      由 Jeff Layton 提交于 
      When CIFSFindNext gets back an -EBADF from a call, it sets the return
code of the function to 0 and eventually exits. Doing this makes the
cleanup at the end of the function skip freeing the SMB buffer, so
we need to make sure we free the buffer explicitly when doing this.

If we don't you end up with errors like this when unplugging the cifs
kernel module:

slab error in kmem_cache_destroy(): cache `cifs_request': Can't free all objects
 [<c046bdbf>] kmem_cache_destroy+0x61/0xf3
 [<e0f03045>] cifs_destroy_request_bufs+0x14/0x28 [cifs]
 [<e0f2016e>] exit_cifs+0x1e/0x80 [cifs]
 [<c043aeae>] sys_delete_module+0x192/0x1b8
 [<c04451fd>] audit_syscall_entry+0x14b/0x17d
 [<c0405413>] syscall_call+0x7/0xb
 =======================
Signed-off-by: NJeff Layton <jlayton@redhat.com>
      6353450a
    • J
      [CIFS] CIFS currently allows for permissions to be changed on files, even · d0a9c078
      由 Jeff Layton 提交于 
      when unix extensions and cifsacl support are disabled. These
permissions changes are "ephemeral" however. They are lost whenever
a share is mounted and unmounted, or when memory pressure forces
the inode out of the cache.

Because of this, we'd like to introduce a behavior change to make
CIFS behave more like local DOS/Windows filesystems. When unix
extensions and cifsacl support aren't enabled, then don't silently
ignore changes to permission bits that can't be reflected on the
server.

Still, there may be people relying on the current behavior for
certain applications. This patch adds a new "dynperm" (and a
corresponding "nodynperm") mount option that will be intended
to make the client fall back to legacy behavior when setting
these modes.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      d0a9c078
  15. 12 5月, 2008 5 次提交
    • L
      Add new 'cond_resched_bkl()' helper function · c3921ab7
      由 Linus Torvalds 提交于 
      It acts exactly like a regular 'cond_resched()', but will not get
optimized away when CONFIG_PREEMPT is set.

Normal kernel code is already preemptable in the presense of
CONFIG_PREEMPT, so cond_resched() is optimized away (see commit
02b67cc3 "sched: do not do
cond_resched() when CONFIG_PREEMPT").

But when wanting to conditionally reschedule while holding a lock, you
need to use "cond_sched_lock(lock)", and the new function is the BKL
equivalent of that.

Also make fs/locks.c use it.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c3921ab7
    • S
      [CIFS] don't allow demultiplex thread to exit until kthread_stop is called · e691b9d1
      由 Steve French 提交于 
      cifs_demultiplex_thread can exit under several conditions:

1) if it's signaled
2) if there's a problem with session setup
3) if kthread_stop is called on it

The first two are problems. If kthread_stop is called on the thread,
there is no guarantee that it will still be up. We need to have the
thread stay up until kthread_stop is called on it.

One option would be to not even try to tear things down until after
kthread_stop is called. However, in the case where there is a problem
setting up the session, there's no real reason to try continuing the
loop.

This patch allows the thread to clean up and prepare for exit under all
three conditions, but it has the thread go to sleep until kthread_stop
is called. This allows us to simplify the shutdown code somewhat since
we can be reasonably sure that the thread won't exit after being
signaled but before kthread_stop is called.

It also removes the places where the thread itself set the tsk variable
since it appeared that it could have a potential race where the thread
might never be shut down.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Acked-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      e691b9d1
    • J
      [CIFS] when not using unix extensions, check for and set ATTR_READONLY on create and mkdir · 67750fb9
      由 Jeff Layton 提交于 
      When creating a directory on a CIFS share without POSIX extensions,
and the given mode has no write bits set, set the ATTR_READONLY bit.

When creating a file, set ATTR_READONLY if the create mode has no write
bits set and we're not using unix extensions.

There are some comments about this being problematic due to the VFS
splitting creates into 2 parts. I'm not sure what that's actually
talking about, but I'm assuming that it has something to do with how
mknod is implemented. In the simple case where we have no unix
extensions and we're just creating a regular file, there's no reason
we can't set ATTR_READONLY.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      67750fb9
    • J
      [CIFS] add local struct inode pointer to cifs_setattr · 02eadeff
      由 Jeff Layton 提交于 
      Clean up cifs_setattr a bit by adding a local inode pointer, and
changing all of the direntry->d_inode references to it. This also adds a
bit of micro-optimization. d_inode shouldn't change over the life of
this function, so we only need to dereference it once.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      02eadeff
    • C
      [CIFS] cifs_find_tcp_session cleanup · 1b20d672
      由 Cyrill Gorcunov 提交于 
      This patch cleans up cifs_find_tcp_session so it become
less indented. Also the error of skipping IPv6 matched
addresses fixed.
Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      1b20d672
  17. 09 5月, 2008 4 次提交
  19. 08 5月, 2008 2 次提交
  21. 07 5月, 2008 10 次提交
  23. 05 5月, 2008 1 次提交