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  1. 13 Feb, 2007 2 commits
    • Linus Torvalds's avatar
      Fix up CIFS for "test_clear_page_dirty()" removal · b3d68567
      Linus Torvalds authored 
      This also adds he required page "writeback" flag handling, that cifs
hasn't been doing and that the page dirty flag changes made obvious.
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
Acked-by: default avatarSteve French <smfltc@us.ibm.com>
      b3d68567
    • Hugh Dickins's avatar
      fix umask when noACL kernel meets extN tuned for ACLs · 0e894923
      Hugh Dickins authored 
      Fix insecure default behaviour reported by Tigran Aivazian: if an
ext2 or ext3 filesystem is tuned to mount with "acl", but mounted by
a kernel built without ACL support, then umask was ignored when creating
inodes - though root or user has umask 022, touch creates files as 0666,
and mkdir creates directories as 0777.

This appears to have worked right until 2.6.11, when a fix to the default
mode on symlinks (always 0777) assumed VFS applies umask: which it does,
unless the mount is marked for ACLs; but ext[23] set MS_POSIXACL in
s_flags according to s_mount_opt set according to def_mount_opts.

We could revert to the 2.6.10 ext[23]_init_acl (adding an S_ISLNK test);
but other filesystems only set MS_POSIXACL when ACLs are configured.  We
could fix this at another level; but it seems most robust to avoid setting
the s_mount_opt flag in the first place (at the expense of more ifdefs).

Likewise don't set the XATTR_USER flag when built without XATTR support.
Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
      0e894923
  3. 10 Feb, 2007 1 commit
  5. 03 Feb, 2007 8 commits
  7. 30 Jan, 2007 5 commits
  9. 26 Jan, 2007 7 commits
  11. 25 Jan, 2007 4 commits
  13. 24 Jan, 2007 4 commits
  15. 23 Jan, 2007 3 commits
    • Adrian Bunk's avatar
      [Bluetooth] Let BT_HIDP depend on INPUT · 99c7cf71
      Adrian Bunk authored 
      This patch lets BT_HIDP depend on instead of select INPUT. This fixes
the following warning during an s390 build:

net/bluetooth/hidp/Kconfig:4:warning: 'select' used by config symbol
'BT_HIDP' refer to undefined symbol 'INPUT'

A dependency on INPUT also implies !S390 (and therefore makes the
explicit dependency obsolete) since INPUT is not available on s390.

The practical difference should be nearly zero, since INPUT is always
set to y unless EMBEDDED=y (or S390=y).
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
      99c7cf71
    • Shaohua Li's avatar
      i386: fix CPU hotplug with 2GB VMSPLIT · 32b7d973
      Shaohua Li authored 
      In VMSPLIT mode, kernel PGD might have more entries than user space
Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
      32b7d973
    • Hugh Dickins's avatar
      read_zero_pagealigned() locking fix · faa309e7
      Hugh Dickins authored 
      Ramiro Voicu hits the BUG_ON(!pte_none(*pte)) in zeromap_pte_range: kernel
bugzilla 7645.  Right: read_zero_pagealigned uses down_read of mmap_sem,
but another thread's racing read of /dev/zero, or a normal fault, can
easily set that pte again, in between zap_page_range and zeromap_page_range
getting there.  It's been wrong ever since 2.4.3.

The simple fix is to use down_write instead, but that would serialize reads
of /dev/zero more than at present: perhaps some app would be badly
affected.  So instead let zeromap_page_range return the error instead of
BUG_ON, and read_zero_pagealigned break to the slower clear_user loop in
that case - there's no need to optimize for it.

Use -EEXIST for when a pte is found: BUG_ON in mmap_zero (the other user of
zeromap_page_range), though it really isn't interesting there.  And since
mmap_zero wants -EAGAIN for out-of-memory, the zeromaps better return that
than -ENOMEM.
Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
      faa309e7
  17. 22 Jan, 2007 6 commits
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