1. 21 3月, 2012 1 次提交
  2. 11 1月, 2012 1 次提交
  3. 04 1月, 2012 1 次提交
    • A
      vfs: fix the stupidity with i_dentry in inode destructors · 6b520e05
      Al Viro 提交于
      Seeing that just about every destructor got that INIT_LIST_HEAD() copied into
      it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once();
      the cost of taking it into inode_init_always() will be negligible for pipes
      and sockets and negative for everything else.  Not to mention the removal of
      boilerplate code from ->destroy_inode() instances...
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      6b520e05
  4. 16 9月, 2011 2 次提交
  5. 22 7月, 2011 1 次提交
  6. 07 7月, 2011 2 次提交
  7. 30 6月, 2011 2 次提交
  8. 04 2月, 2011 1 次提交
  9. 13 1月, 2011 1 次提交
  10. 07 1月, 2011 2 次提交
    • N
      fs: dcache reduce branches in lookup path · fb045adb
      Nick Piggin 提交于
      Reduce some branches and memory accesses in dcache lookup by adding dentry
      flags to indicate common d_ops are set, rather than having to check them.
      This saves a pointer memory access (dentry->d_op) in common path lookup
      situations, and saves another pointer load and branch in cases where we
      have d_op but not the particular operation.
      
      Patched with:
      
      git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i
      Signed-off-by: NNick Piggin <npiggin@kernel.dk>
      fb045adb
    • N
      fs: icache RCU free inodes · fa0d7e3d
      Nick Piggin 提交于
      RCU free the struct inode. This will allow:
      
      - Subsequent store-free path walking patch. The inode must be consulted for
        permissions when walking, so an RCU inode reference is a must.
      - sb_inode_list_lock to be moved inside i_lock because sb list walkers who want
        to take i_lock no longer need to take sb_inode_list_lock to walk the list in
        the first place. This will simplify and optimize locking.
      - Could remove some nested trylock loops in dcache code
      - Could potentially simplify things a bit in VM land. Do not need to take the
        page lock to follow page->mapping.
      
      The downsides of this is the performance cost of using RCU. In a simple
      creat/unlink microbenchmark, performance drops by about 10% due to inability to
      reuse cache-hot slab objects. As iterations increase and RCU freeing starts
      kicking over, this increases to about 20%.
      
      In cases where inode lifetimes are longer (ie. many inodes may be allocated
      during the average life span of a single inode), a lot of this cache reuse is
      not applicable, so the regression caused by this patch is smaller.
      
      The cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU,
      however this adds some complexity to list walking and store-free path walking,
      so I prefer to implement this at a later date, if it is shown to be a win in
      real situations. I haven't found a regression in any non-micro benchmark so I
      doubt it will be a problem.
      Signed-off-by: NNick Piggin <npiggin@kernel.dk>
      fa0d7e3d
  11. 17 12月, 2010 1 次提交
  12. 23 11月, 2010 8 次提交
  13. 08 11月, 2010 1 次提交
    • C
      hfsplus: fix option parsing during remount · 6f80dfe5
      Christoph Hellwig 提交于
      hfsplus only actually uses the force option during remount, but it uses
      the full option parser with a fake superblock to do so.  This means remount
      will fail if any nls option is set (which happens frequently with older
      mount tools), even if it is the same.
      
      Fix this by adding a simpler version of the parser that only parses the force
      option for remount.
      Signed-off-by: NChristoph Hellwig <hch@tuxera.com>
      6f80dfe5
  14. 29 10月, 2010 1 次提交
  15. 01 10月, 2010 11 次提交
  16. 10 8月, 2010 2 次提交
  17. 06 3月, 2010 1 次提交
  18. 24 9月, 2009 1 次提交
    • T
      fs: Make unload_nls() NULL pointer safe · 6d729e44
      Thomas Gleixner 提交于
      Most call sites of unload_nls() do:
      	if (nls)
      		unload_nls(nls);
      
      Check the pointer inside unload_nls() like we do in kfree() and
      simplify the call sites.
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Cc: Steve French <sfrench@us.ibm.com>
      Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
      Cc: Roman Zippel <zippel@linux-m68k.org>
      Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
      Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
      Cc: Anton Altaparmakov <aia21@cantab.net>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      6d729e44
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