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  1. 13 Jan, 2011 1 commit
  3. 17 Dec, 2010 1 commit
  5. 15 Oct, 2010 1 commit
    • Arnd Bergmann's avatar
      llseek: automatically add .llseek fop · 6038f373
      Arnd Bergmann authored 
      All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.

The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.

New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time.  Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.

The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
see...
      6038f373
  7. 22 Sep, 2010 1 commit
  9. 06 Aug, 2010 1 commit
    • David Howells's avatar
      Fix init ordering of /dev/console vs callers of modprobe · 31d1d48e
      David Howells authored 
      
Make /dev/console get initialised before any initialisation routine that
invokes modprobe because if modprobe fails, it's going to want to open
/dev/console, presumably to write an error message to.

The problem with that is that if the /dev/console driver is not yet
initialised, the chardev handler will call request_module() to invoke
modprobe, which will fail, because we never compile /dev/console as a
module.

This will lead to a modprobe loop, showing the following in the kernel
log:

	request_module: runaway loop modprobe char-major-5-1
	request_module: runaway loop modprobe char-major-5-1
	request_module: runaway loop modprobe char-major-5-1
	request_module: runaway loop modprobe char-major-5-1
	request_module: runaway loop modprobe char-major-5-1

This can happen, for example, when the built in md5 module can't find
the built in cryptomgr module (because the latter fails to initialise).
The md5 module comes before the call to tty_init(), presumably because
'crypto' comes before 'drivers' alphabetically.

Fix this by calling tty_init() from chrdev_init().
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      31d1d48e
  11. 24 Sep, 2009 1 commit
  13. 11 Sep, 2009 1 commit
  15. 10 Aug, 2009 1 commit
  17. 12 Jul, 2009 1 commit
  19. 12 Jun, 2009 1 commit
    • Theodore Ts'o's avatar
      fs: Remove i_cindex from struct inode · 9fd5746f
      Theodore Ts'o authored 
      
The only user of the i_cindex element in the inode structure is used
is by the firewire drivers.  As part of an attempt to slim down the
inode structure to save memory --- since a typical Linux system will
have hundreds of thousands if not millions of inodes cached, a
reduction in the size inode has high leverage.

The firewire driver does not need i_cindex in any fast path, so it's
simple enough to calculate when it is needed, instead of wasting space
in the inode structure.
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Cc: krh@redhat.com
Cc: stefanr@s5r6.in-berlin.de
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      9fd5746f
  21. 06 Jan, 2009 1 commit
  23. 23 Oct, 2008 1 commit
  25. 16 Oct, 2008 1 commit
  27. 20 Jun, 2008 2 commits
  29. 29 Apr, 2008 1 commit
  31. 08 Feb, 2008 1 commit
  33. 25 Jan, 2008 2 commits
  35. 17 Oct, 2007 1 commit
  37. 19 Jul, 2007 1 commit
  39. 05 Apr, 2007 1 commit
  41. 21 Feb, 2007 1 commit
  43. 12 Feb, 2007 1 commit
  45. 30 Sep, 2006 1 commit
  47. 29 Sep, 2006 2 commits
  49. 27 Sep, 2006 1 commit
  51. 15 Jul, 2006 1 commit
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  57. 31 Mar, 2006 1 commit
  59. 28 Mar, 2006 2 commits
  61. 25 Mar, 2006 1 commit
  63. 20 Mar, 2006 1 commit
  65. 15 Jan, 2006 1 commit
  67. 12 Jul, 2005 1 commit
    • Brian King's avatar
      [PATCH] cdev: cdev_put oops · 7da6844c
      Brian King authored 
      
While fixing an oops in the st driver in a dirty release path, I
encountered an oops in cdev_put for cdevs allocated using cdev_alloc.  If
cdev_del is called when the cdev kobject still has an open user, when the
last cdev_put is called, the cdev_put will call kobject_put, which will end
up ultimately releasing the cdev in cdev_dynamic_release.  Patch fixes the
oops by preventing cdev_put from accessing freed memory.
Signed-off-by: default avatarBrian King <brking@us.ibm.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      7da6844c
  69. 29 Jun, 2005 1 commit
  71. 23 Jun, 2005 1 commit