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  1. 12 3月, 2011 11 次提交
  3. 11 3月, 2011 25 次提交
  5. 10 3月, 2011 4 次提交
    • J
      fs/dcache: allow d_obtain_alias() to return unhashed dentries · d891eedb
      由 J. Bruce Fields 提交于 
      Without this patch, inodes are not promptly freed on last close of an
unlinked file by an nfs client:

	client$ mount -tnfs4 server:/export/ /mnt/
	client$ tail -f /mnt/FOO
	...
	server$ df -i /export
	server$ rm /export/FOO
	(^C the tail -f)
	server$ df -i /export
	server$ echo 2 >/proc/sys/vm/drop_caches
	server$ df -i /export

the df's will show that the inode is not freed on the filesystem until
the last step, when it could have been freed after killing the client's
tail -f. On-disk data won't be deallocated either, leading to possible
spurious ENOSPC.

This occurs because when the client does the close, it arrives in a
compound with a putfh and a close, processed like:

	- putfh: look up the filehandle.  The only alias found for the
	  inode will be DCACHE_UNHASHED alias referenced by the filp
	  this, so it creates a new DCACHE_DISCONECTED dentry and
	  returns that instead.
	- close: closes the existing filp, which is destroyed
	  immediately by dput() since it's DCACHE_UNHASHED.
	- end of the compound: release the reference
	  to the current filehandle, and dput() the new
	  DCACHE_DISCONECTED dentry, which gets put on the
	  unused list instead of being destroyed immediately.

Nick Piggin suggested fixing this by allowing d_obtain_alias to return
the unhashed dentry that is referenced by the filp, instead of making it
create a new dentry.

Leave __d_find_alias() alone to avoid changing behavior of other
callers.

Also nfsd doesn't need all the checks of __d_find_alias(); any dentry,
hashed or unhashed, disconnected or not, should work.
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      d891eedb
    • M
      tg3: Remove 5750 PCI code · c5908939
      由 Matt Carlson 提交于 
      The 5750 ASIC rev was never released as a PCI device.  It only exists as
a PCIe device.  This patch removes the code that supports the former
configuration.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c5908939
    • M
      tg3: Move tg3_init_link_config to tg3_phy_probe · e256f8a3
      由 Matt Carlson 提交于 
      This patch moves the function that initializes the link configuration
closer to the place where the rest of the phy code is initialized.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e256f8a3
    • M
      tg3: Refine VAux decision process · 683644b7
      由 Matt Carlson 提交于 
      In the near future, the VAux switching decision process is going to get
more complicated.  This patch refines and consolidates the existing
algorithm in anticipation of the new scheme.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      683644b7