1. 24 10月, 2014 1 次提交
  2. 12 6月, 2014 3 次提交
  3. 28 5月, 2014 1 次提交
  4. 07 5月, 2014 1 次提交
    • A
      start adding the tag to iov_iter · 71d8e532
      Al Viro 提交于
      For now, just use the same thing we pass to ->direct_IO() - it's all
      iovec-based at the moment.  Pass it explicitly to iov_iter_init() and
      account for kvec vs. iovec in there, by the same kludge NFS ->direct_IO()
      uses.
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      71d8e532
  5. 02 4月, 2014 2 次提交
  6. 23 1月, 2014 1 次提交
    • M
      fuse: fix pipe_buf_operations · 28a625cb
      Miklos Szeredi 提交于
      Having this struct in module memory could Oops when if the module is
      unloaded while the buffer still persists in a pipe.
      
      Since sock_pipe_buf_ops is essentially the same as fuse_dev_pipe_buf_steal
      merge them into nosteal_pipe_buf_ops (this is the same as
      default_pipe_buf_ops except stealing the page from the buffer is not
      allowed).
      Reported-by: NAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      Cc: stable@vger.kernel.org
      28a625cb
  7. 25 10月, 2013 1 次提交
  8. 29 6月, 2013 3 次提交
  9. 24 6月, 2013 1 次提交
  10. 20 6月, 2013 1 次提交
  11. 10 4月, 2013 5 次提交
  12. 22 3月, 2013 1 次提交
  13. 04 3月, 2013 1 次提交
  14. 26 2月, 2013 1 次提交
  15. 23 2月, 2013 1 次提交
  16. 07 1月, 2013 1 次提交
    • E
      tcp: fix MSG_SENDPAGE_NOTLAST logic · ae62ca7b
      Eric Dumazet 提交于
      commit 35f9c09f (tcp: tcp_sendpages() should call tcp_push() once)
      added an internal flag : MSG_SENDPAGE_NOTLAST meant to be set on all
      frags but the last one for a splice() call.
      
      The condition used to set the flag in pipe_to_sendpage() relied on
      splice() user passing the exact number of bytes present in the pipe,
      or a smaller one.
      
      But some programs pass an arbitrary high value, and the test fails.
      
      The effect of this bug is a lack of tcp_push() at the end of a
      splice(pipe -> socket) call, and possibly very slow or erratic TCP
      sessions.
      
      We should both test sd->total_len and fact that another fragment
      is in the pipe (pipe->nrbufs > 1)
      
      Many thanks to Willy for providing very clear bug report, bisection
      and test programs.
      Reported-by: NWilly Tarreau <w@1wt.eu>
      Bisected-by: NWilly Tarreau <w@1wt.eu>
      Tested-by: NWilly Tarreau <w@1wt.eu>
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ae62ca7b
  17. 12 12月, 2012 1 次提交
  18. 27 9月, 2012 1 次提交
  19. 31 7月, 2012 1 次提交
  20. 14 6月, 2012 1 次提交
    • E
      splice: fix racy pipe->buffers uses · 047fe360
      Eric Dumazet 提交于
      Dave Jones reported a kernel BUG at mm/slub.c:3474! triggered
      by splice_shrink_spd() called from vmsplice_to_pipe()
      
      commit 35f3d14d (pipe: add support for shrinking and growing pipes)
      added capability to adjust pipe->buffers.
      
      Problem is some paths don't hold pipe mutex and assume pipe->buffers
      doesn't change for their duration.
      
      Fix this by adding nr_pages_max field in struct splice_pipe_desc, and
      use it in place of pipe->buffers where appropriate.
      
      splice_shrink_spd() loses its struct pipe_inode_info argument.
      Reported-by: NDave Jones <davej@redhat.com>
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Tom Herbert <therbert@google.com>
      Cc: stable <stable@vger.kernel.org> # 2.6.35
      Tested-by: NDave Jones <davej@redhat.com>
      Signed-off-by: NJens Axboe <axboe@kernel.dk>
      047fe360
  21. 02 6月, 2012 1 次提交
    • J
      fs: introduce inode operation ->update_time · c3b2da31
      Josef Bacik 提交于
      Btrfs has to make sure we have space to allocate new blocks in order to modify
      the inode, so updating time can fail.  We've gotten around this by having our
      own file_update_time but this is kind of a pain, and Christoph has indicated he
      would like to make xfs do something different with atime updates.  So introduce
      ->update_time, where we will deal with i_version an a/m/c time updates and
      indicate which changes need to be made.  The normal version just does what it
      has always done, updates the time and marks the inode dirty, and then
      filesystems can choose to do something different.
      
      I've gone through all of the users of file_update_time and made them check for
      errors with the exception of the fault code since it's complicated and I wasn't
      quite sure what to do there, also Jan is going to be pushing the file time
      updates into page_mkwrite for those who have it so that should satisfy btrfs and
      make it not a big deal to check the file_update_time() return code in the
      generic fault path. Thanks,
      Signed-off-by: NJosef Bacik <josef@redhat.com>
      c3b2da31
  22. 20 4月, 2012 1 次提交
    • E
      vmsplice: relax alignement requirements for SPLICE_F_GIFT · bd1a68b5
      Eric Dumazet 提交于
      It seems there is no fundamental reason to limit vmsplice()
      SPLICE_F_GIFT to page aligned chunks.
      
      All helpers are prepared to cope with offsets in page.
      
      This limitation makes vmsplice() API very impractical in the zero-copy
      land.
      Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
      Cc: Tom Herbert <therbert@google.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: David Miller <davem@davemloft.net>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: Changli Gao <xiaosuo@gmail.com>
      Cc: Miklos Szeredi <mszeredi@suse.cz>
      Signed-off-by: NJens Axboe <axboe@kernel.dk>
      bd1a68b5
  23. 06 4月, 2012 1 次提交
    • E
      tcp: tcp_sendpages() should call tcp_push() once · 35f9c09f
      Eric Dumazet 提交于
      commit 2f533844 (tcp: allow splice() to build full TSO packets) added
      a regression for splice() calls using SPLICE_F_MORE.
      
      We need to call tcp_flush() at the end of the last page processed in
      tcp_sendpages(), or else transmits can be deferred and future sends
      stall.
      
      Add a new internal flag, MSG_SENDPAGE_NOTLAST, acting like MSG_MORE, but
      with different semantic.
      
      For all sendpage() providers, its a transparent change. Only
      sock_sendpage() and tcp_sendpages() can differentiate the two different
      flags provided by pipe_to_sendpage()
      Reported-by: NTom Herbert <therbert@google.com>
      Cc: Nandita Dukkipati <nanditad@google.com>
      Cc: Neal Cardwell <ncardwell@google.com>
      Cc: Tom Herbert <therbert@google.com>
      Cc: Yuchung Cheng <ycheng@google.com>
      Cc: H.K. Jerry Chu <hkchu@google.com>
      Cc: Maciej Żenczykowski <maze@google.com>
      Cc: Mahesh Bandewar <maheshb@google.com>
      Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
      Signed-off-by: NEric Dumazet <eric.dumazet@gmail&gt;com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      35f9c09f
  24. 20 3月, 2012 1 次提交
  25. 29 2月, 2012 1 次提交
  26. 04 1月, 2012 1 次提交
  27. 26 7月, 2011 1 次提交
  28. 24 5月, 2011 1 次提交
  29. 17 12月, 2010 1 次提交
  30. 29 11月, 2010 2 次提交
    • L
      Export 'get_pipe_info()' to other users · c66fb347
      Linus Torvalds 提交于
      And in particular, use it in 'pipe_fcntl()'.
      
      The other pipe functions do not need to use the 'careful' version, since
      they are only ever called for things that are already known to be pipes.
      
      The normal read/write/ioctl functions are called through the file
      operations structures, so if a file isn't a pipe, they'd never get
      called.  But pipe_fcntl() is special, and called directly from the
      generic fcntl code, and needs to use the same careful function that the
      splice code is using.
      
      Cc: Jens Axboe <jaxboe@fusionio.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Dave Jones <davej@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c66fb347
    • L
      Rename 'pipe_info()' to 'get_pipe_info()' · 71993e62
      Linus Torvalds 提交于
      .. and change it to take the 'file' pointer instead of an inode, since
      that's what all users want anyway.
      
      The renaming is preparatory to exporting it to other users.  The old
      'pipe_info()' name was too generic and is already used elsewhere, so
      before making the function public we need to use a more specific name.
      
      Cc: Jens Axboe <jaxboe@fusionio.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Dave Jones <davej@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      71993e62