1. 28 4月, 2009 13 次提交
  2. 09 4月, 2009 2 次提交
  3. 02 4月, 2009 2 次提交
    • M
      fuse: allow private mappings of "direct_io" files · fc280c96
      Miklos Szeredi 提交于
      Allow MAP_PRIVATE mmaps of "direct_io" files.  This is necessary for
      execute support.
      
      MAP_SHARED mappings require some sort of coherency between the
      underlying file and the mapping.  With "direct_io" it is difficult to
      provide this, so for the moment just disallow shared (read-write and
      read-only) mappings altogether.
      Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      fc280c96
    • M
      fuse: allow kernel to access "direct_io" files · f4975c67
      Miklos Szeredi 提交于
      Allow the kernel read and write on "direct_io" files.  This is
      necessary for nfs export and execute support.
      
      The implementation is simple: if an access from the kernel is
      detected, don't perform get_user_pages(), just use the kernel address
      provided by the requester to copy from/to the userspace filesystem.
      Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      f4975c67
  4. 01 4月, 2009 1 次提交
    • N
      mm: page_mkwrite change prototype to match fault · c2ec175c
      Nick Piggin 提交于
      Change the page_mkwrite prototype to take a struct vm_fault, and return
      VM_FAULT_xxx flags.  There should be no functional change.
      
      This makes it possible to return much more detailed error information to
      the VM (and also can provide more information eg.  virtual_address to the
      driver, which might be important in some special cases).
      
      This is required for a subsequent fix.  And will also make it easier to
      merge page_mkwrite() with fault() in future.
      Signed-off-by: NNick Piggin <npiggin@suse.de>
      Cc: Chris Mason <chris.mason@oracle.com>
      Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
      Cc: Miklos Szeredi <miklos@szeredi.hu>
      Cc: Steven Whitehouse <swhiteho@redhat.com>
      Cc: Mark Fasheh <mfasheh@suse.com>
      Cc: Joel Becker <joel.becker@oracle.com>
      Cc: Artem Bityutskiy <dedekind@infradead.org>
      Cc: Felix Blyakher <felixb@sgi.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c2ec175c
  5. 30 3月, 2009 1 次提交
  6. 28 3月, 2009 1 次提交
  7. 26 1月, 2009 5 次提交
  8. 22 1月, 2009 1 次提交
  9. 05 1月, 2009 1 次提交
    • N
      fs: symlink write_begin allocation context fix · 54566b2c
      Nick Piggin 提交于
      With the write_begin/write_end aops, page_symlink was broken because it
      could no longer pass a GFP_NOFS type mask into the point where the
      allocations happened.  They are done in write_begin, which would always
      assume that the filesystem can be entered from reclaim.  This bug could
      cause filesystem deadlocks.
      
      The funny thing with having a gfp_t mask there is that it doesn't really
      allow the caller to arbitrarily tinker with the context in which it can be
      called.  It couldn't ever be GFP_ATOMIC, for example, because it needs to
      take the page lock.  The only thing any callers care about is __GFP_FS
      anyway, so turn that into a single flag.
      
      Add a new flag for write_begin, AOP_FLAG_NOFS.  Filesystems can now act on
      this flag in their write_begin function.  Change __grab_cache_page to
      accept a nofs argument as well, to honour that flag (while we're there,
      change the name to grab_cache_page_write_begin which is more instructive
      and does away with random leading underscores).
      
      This is really a more flexible way to go in the end anyway -- if a
      filesystem happens to want any extra allocations aside from the pagecache
      ones in ints write_begin function, it may now use GFP_KERNEL (rather than
      GFP_NOFS) for common case allocations (eg.  ocfs2_alloc_write_ctxt, for a
      random example).
      
      [kosaki.motohiro@jp.fujitsu.com: fix ubifs]
      [kosaki.motohiro@jp.fujitsu.com: fix fuse]
      Signed-off-by: NNick Piggin <npiggin@suse.de>
      Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Cc: <stable@kernel.org>		[2.6.28.x]
      Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      [ Cleaned up the calling convention: just pass in the AOP flags
        untouched to the grab_cache_page_write_begin() function.  That
        just simplifies everybody, and may even allow future expansion of the
        logic.   - Linus ]
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      54566b2c
  10. 02 12月, 2008 2 次提交
  11. 26 11月, 2008 9 次提交
  12. 14 11月, 2008 2 次提交