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  1. 02 Jan, 2009 31 commits
  3. 31 Dec, 2008 9 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 · b58602a4
      Linus Torvalds authored 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (34 commits)
  nfsd race fixes: jfs
  nfsd race fixes: reiserfs
  nfsd race fixes: ext4
  nfsd race fixes: ext3
  nfsd race fixes: ext2
  nfsd/create race fixes, infrastructure
  filesystem notification: create fs/notify to contain all fs notification
  fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization
  kill ->dir_notify()
  filp_cachep can be static in fs/file_table.c
  fix f_count description in Documentation/filesystems/files.txt
  make INIT_FS use the __RW_LOCK_UNLOCKED initialization
  take init_fs to saner place
  kill vfs_permission
  pass a struct path * to may_open
  kill walk_init_root
  remove incorrect comment in inode_permission
  expand some comments (d_path / seq_path)
  correct wrong function name of d_put in kernel document and source comment
  fix switch_names() breakage in short-to-short case
  ...
      b58602a4
    • Dave Kleikamp's avatar
      nfsd race fixes: jfs · 1f3403fa
      Dave Kleikamp authored 
      jfs version of Al Viro's nfsd race patches
Signed-off-by: default avatarDave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      1f3403fa
    • Al Viro's avatar
      nfsd race fixes: reiserfs · c1eaa26b
      Al Viro authored 
      ... and the same for reiserfs.  The difference here is that we need
insert_inode_locked4() to match iget5_locked().
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      c1eaa26b
    • Al Viro's avatar
      nfsd race fixes: ext4 · 6b38e842
      Al Viro authored 
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      6b38e842
    • Al Viro's avatar
      nfsd race fixes: ext3 · c38012da
      Al Viro authored 
      ext3 analog of the previous patch
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      c38012da
    • Al Viro's avatar
      nfsd race fixes: ext2 · 41080b5a
      Al Viro authored 
      * make ext2_new_inode() put the inode into icache in locked state
* do not unlock until the inode is fully set up; otherwise nfsd
might pick it in half-baked state.
* make sure that ext2_new_inode() does *not* lead to two inodes with the
same inumber hashed at the same time; otherwise a bogus fhandle coming
from nfsd might race with inode creation:

nfsd: iget_locked() creates inode
nfsd: try to read from disk, block on that.
ext2_new_inode(): allocate inode with that inumber
ext2_new_inode(): insert it into icache, set it up and dirty
ext2_write_inode(): get the relevant part of inode table in cache,
set the entry for our inode (and start writing to disk)
nfsd: get CPU again, look into inode table, see nice and sane on-disk
inode, set the in-core inode from it

oops - we have two in-core inodes with the same inumber live in icache,
both used for IO.  Welcome to fs corruption...
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      41080b5a
    • Al Viro's avatar
      nfsd/create race fixes, infrastructure · 261bca86
      Al Viro authored 
      new helpers - insert_inode_locked() and insert_inode_locked4().
Hash new inode, making sure that there's no such inode in icache
already.  If there is and it does not end up unhashed (as would
happen if we have nfsd trying to resolve a bogus fhandle), fail.
Otherwise insert our inode into hash and succeed.

In either case have i_state set to new+locked; cleanup ends up
being simpler with such calling conventions.
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      261bca86
    • Eric Paris's avatar
      filesystem notification: create fs/notify to contain all fs notification · 272eb014
      Eric Paris authored 
      Creating a generic filesystem notification interface, fsnotify, which will be
used by inotify, dnotify, and eventually fanotify is really starting to
clutter the fs directory.  This patch simply moves inotify and dnotify into
fs/notify/inotify and fs/notify/dnotify respectively to make both current fs/
and future notification tidier.
Signed-off-by: default avatarEric Paris <eparis@redhat.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      272eb014
    • Denis ChengRq's avatar
      fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization · c2acf7b9
      Denis ChengRq authored 
      - iget5_locked in bdget really needs blockdev_superblock, instead of
  bd_mnt, so bd_mnt could be just a local variable;

- blockdev_superblock really needs __read_mostly, while local var bd_mnt
  not;

- make use of sb_is_blkdev_sb in bd_forget, instead of direct reference
  to blockdev_superblock.
Signed-off-by: default avatarDenis ChengRq <crquan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      c2acf7b9