1. 18 7月, 2012 7 次提交
  2. 21 6月, 2012 4 次提交
  3. 16 6月, 2012 1 次提交
  4. 14 6月, 2012 14 次提交
  5. 17 5月, 2012 3 次提交
  6. 16 5月, 2012 1 次提交
  7. 06 5月, 2012 1 次提交
  8. 06 4月, 2012 1 次提交
    • S
      simple_open: automatically convert to simple_open() · 234e3405
      Stephen Boyd 提交于
      Many users of debugfs copy the implementation of default_open() when
      they want to support a custom read/write function op.  This leads to a
      proliferation of the default_open() implementation across the entire
      tree.
      
      Now that the common implementation has been consolidated into libfs we
      can replace all the users of this function with simple_open().
      
      This replacement was done with the following semantic patch:
      
      <smpl>
      @ open @
      identifier open_f != simple_open;
      identifier i, f;
      @@
      -int open_f(struct inode *i, struct file *f)
      -{
      (
      -if (i->i_private)
      -f->private_data = i->i_private;
      |
      -f->private_data = i->i_private;
      )
      -return 0;
      -}
      
      @ has_open depends on open @
      identifier fops;
      identifier open.open_f;
      @@
      struct file_operations fops = {
      ...
      -.open = open_f,
      +.open = simple_open,
      ...
      };
      </smpl>
      
      [akpm@linux-foundation.org: checkpatch fixes]
      Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Julia Lawall <Julia.Lawall@lip6.fr>
      Acked-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      234e3405
  9. 01 4月, 2012 1 次提交
  10. 21 3月, 2012 2 次提交
  11. 17 3月, 2012 1 次提交
  12. 19 11月, 2011 1 次提交
  13. 18 11月, 2011 2 次提交
    • K
      pstore: pass reason to backend write callback · 3d6d8d20
      Kees Cook 提交于
      This allows a backend to filter on the dmesg reason as well as the pstore
      reason. When ramoops is switched to pstore, this is needed since it has
      no interest in storing non-crash dmesg details.
      
      Drop pstore_write() as it has no users, and handling the "reason" here
      has no obviously correct value.
      Signed-off-by: NKees Cook <keescook@chromium.org>
      Signed-off-by: NTony Luck <tony.luck@intel.com>
      3d6d8d20
    • K
      pstore: pass allocated memory region back to caller · f6f82851
      Kees Cook 提交于
      The buf_lock cannot be held while populating the inodes, so make the backend
      pass forward an allocated and filled buffer instead. This solves the following
      backtrace. The effect is that "buf" is only ever used to notify the backends
      that something was written to it, and shouldn't be used in the read path.
      
      To replace the buf_lock during the read path, isolate the open/read/close
      loop with a separate mutex to maintain serialized access to the backend.
      
      Note that is is up to the pstore backend to cope if the (*write)() path is
      called in the middle of the read path.
      
      [   59.691019] BUG: sleeping function called from invalid context at .../mm/slub.c:847
      [   59.691019] in_atomic(): 0, irqs_disabled(): 1, pid: 1819, name: mount
      [   59.691019] Pid: 1819, comm: mount Not tainted 3.0.8 #1
      [   59.691019] Call Trace:
      [   59.691019]  [<810252d5>] __might_sleep+0xc3/0xca
      [   59.691019]  [<810a26e6>] kmem_cache_alloc+0x32/0xf3
      [   59.691019]  [<810b53ac>] ? __d_lookup_rcu+0x6f/0xf4
      [   59.691019]  [<810b68b1>] alloc_inode+0x2a/0x64
      [   59.691019]  [<810b6903>] new_inode+0x18/0x43
      [   59.691019]  [<81142447>] pstore_get_inode.isra.1+0x11/0x98
      [   59.691019]  [<81142623>] pstore_mkfile+0xae/0x26f
      [   59.691019]  [<810a2a66>] ? kmem_cache_free+0x19/0xb1
      [   59.691019]  [<8116c821>] ? ida_get_new_above+0x140/0x158
      [   59.691019]  [<811708ea>] ? __init_rwsem+0x1e/0x2c
      [   59.691019]  [<810b67e8>] ? inode_init_always+0x111/0x1b0
      [   59.691019]  [<8102127e>] ? should_resched+0xd/0x27
      [   59.691019]  [<8137977f>] ? _cond_resched+0xd/0x21
      [   59.691019]  [<81142abf>] pstore_get_records+0x52/0xa7
      [   59.691019]  [<8114254b>] pstore_fill_super+0x7d/0x91
      [   59.691019]  [<810a7ff5>] mount_single+0x46/0x82
      [   59.691019]  [<8114231a>] pstore_mount+0x15/0x17
      [   59.691019]  [<811424ce>] ? pstore_get_inode.isra.1+0x98/0x98
      [   59.691019]  [<810a8199>] mount_fs+0x5a/0x12d
      [   59.691019]  [<810b9174>] ? alloc_vfsmnt+0xa4/0x14a
      [   59.691019]  [<810b9474>] vfs_kern_mount+0x4f/0x7d
      [   59.691019]  [<810b9d7e>] do_kern_mount+0x34/0xb2
      [   59.691019]  [<810bb15f>] do_mount+0x5fc/0x64a
      [   59.691019]  [<810912fb>] ? strndup_user+0x2e/0x3f
      [   59.691019]  [<810bb3cb>] sys_mount+0x66/0x99
      [   59.691019]  [<8137b537>] sysenter_do_call+0x12/0x26
      Signed-off-by: NKees Cook <keescook@chromium.org>
      Signed-off-by: NTony Luck <tony.luck@intel.com>
      f6f82851
  14. 13 10月, 2011 1 次提交