07 Jan, 2012

10 commits

• 8e8b87964   vfs: prevent remount read-only if pending removes ... Browse Code »

  If there are any inodes on the super block that have been unlinked
  (i_nlink == 0) but have not yet been deleted then prevent the
  remounting the super block read-only.

  Reported-by: Toshiyuki Okajima
  Signed-off-by: Miklos Szeredi
  Tested-by: Toshiyuki Okajima
  Signed-off-by: Al Viro

  Miklos Szeredi

  2012-01-07 12:20:13 +0800  
• 7ada4db88   vfs: count unlinked inodes ... Browse Code »

  Add a new counter to the superblock that keeps track of unlinked but
  not yet deleted inodes.

  Do not WARN_ON if set_nlink is called with zero count, just do a
  ratelimited printk. This happens on xfs and probably other
  filesystems after an unclean shutdown when the filesystem reads inodes
  which already have zero i_nlink. Reported by Christoph Hellwig.

  Signed-off-by: Miklos Szeredi
  Tested-by: Toshiyuki Okajima
  Signed-off-by: Al Viro

  Miklos Szeredi

  2012-01-07 12:20:12 +0800  
• 4ed5e82fe   vfs: protect remounting superblock read-only ... Browse Code »

  Currently remouting superblock read-only is racy in a major way.

  With the per mount read-only infrastructure it is now possible to
  prevent most races, which this patch attempts.

  Before starting the remount read-only, iterate through all mounts
  belonging to the superblock and if none of them have any pending
  writes, set sb->s_readonly_remount. This indicates that remount is in
  progress and no further write requests are allowed. If the remount
  succeeds set MS_RDONLY and reset s_readonly_remount.

  If the remounting is unsuccessful just reset s_readonly_remount.
  This can result in transient EROFS errors, despite the fact the
  remount failed. Unfortunately hodling off writes is difficult as
  remount itself may touch the filesystem (e.g. through load_nls())
  which would deadlock.

  A later patch deals with delayed writes due to nlink going to zero.

  Signed-off-by: Miklos Szeredi
  Tested-by: Toshiyuki Okajima
  Signed-off-by: Al Viro

  Miklos Szeredi

  2012-01-07 12:20:12 +0800  
• 39f7c4db1   vfs: keep list of mounts for each superblock ... Browse Code »

  Keep track of vfsmounts belonging to a superblock. List is protected
  by vfsmount_lock.

  Signed-off-by: Miklos Szeredi
  Tested-by: Toshiyuki Okajima
  Signed-off-by: Al Viro

  Miklos Szeredi

  2012-01-07 12:20:12 +0800  
• 34c80b1d9   vfs: switch ->show_options() to struct dentry * ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-07 12:19:54 +0800  
• a6322de67   vfs: switch ->show_path() to struct dentry * ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-07 12:16:55 +0800  
• d861c630e   vfs: switch ->show_devname() to struct dentry * ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-07 12:16:54 +0800  
• 64132379d   vfs: switch ->show_stats to struct dentry * ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-07 12:16:54 +0800  
• cdcf116d4   switch security_path_chmod() to struct path * ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-07 12:16:53 +0800  
• ece2ccb66   Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z Browse Code »
  Al Viro

  2012-01-07 12:15:54 +0800  

04 Jan, 2012

30 commits

• 0226f4923   vfs: take /proc/*/mounts and friends to fs/proc_namespace.c ... Browse Code »

  rationale: that stuff is far tighter bound to fs/namespace.c than to
  the guts of procfs proper.

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:13 +0800  
• c63181e6b   vfs: move fsnotify junk to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:12 +0800  
• 52ba1621d   vfs: move mnt_devname ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:11 +0800  
• 1a4eeaf2a   vfs: move mnt_list to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:11 +0800  
• 863d684f9   vfs: move the rest of int fields to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:10 +0800  
• 15169fe78   vfs: mnt_id/mnt_group_id moved ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:10 +0800  
• 143c8c91c   vfs: mnt_ns moved to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:09 +0800  
• 6776db3d3   vfs: take mnt_share/mnt_slave/mnt_slave_list and mnt_expire to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:08 +0800  
• d10e8def0   vfs: take mnt_master to struct mount ... Browse Code »

  make IS_MNT_SLAVE take struct mount * at the same time

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:08 +0800  
• 6b41d536f   vfs: take mnt_child/mnt_mounts to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:06 +0800  
• 68e8a9fea   vfs: all counters taken to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:06 +0800  
• a73324da7   vfs: move mnt_mountpoint to struct mount ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:05 +0800  
• 3376f34ff   vfs: mnt_parent moved to struct mount ... Browse Code »

  the second victim...

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:04 +0800  
• 1b8e5564b   vfs: the first spoils - mnt_hash moved ... Browse Code »

  taken out of struct vfsmount into struct mount

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:57:02 +0800  
• a218d0fdc   switch open and mkdir syscalls to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:19 +0800  
• 04fc66e78   switch ->path_mknod() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:19 +0800  
• 4572befe2   switch ->path_mkdir() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:18 +0800  
• 2570ebbd1   switch kern_ipc_perm to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:17 +0800  
• 0583fcc96   consolidate umode_t declarations ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:17 +0800  
• 1bc94226d   switch spu_create(2) to use of SYSCALL_DEFINE4, make it use umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:16 +0800  
• df0a42837   switch mq_open() to umode_t Browse Code »
  Al Viro

  2012-01-04 11:55:16 +0800  
• a85cfdaec   switch miscdevice to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:15 +0800  
• 52ef0c042   switch securityfs_create_file() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:13 +0800  
• 910f4ecef   switch security_path_chmod() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:13 +0800  
• 49f0a0767   switch sys_chmod()/sys_fchmod()/sys_fchmodat() to umode_t ... Browse Code »

  SYSCALLx magic should take care of things, according to Linus...

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:12 +0800  
• 36fcb589e   sysctl: use umode_t for table permissions ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:12 +0800  
• 8d334acdd   switch is_sxid() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:11 +0800  
• 62bb10917   switch inode_init_owner() to umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:11 +0800  
• 632861f05   pohmelfs: propagate umode_t ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:07 +0800  
• 09208d150   shmem, ramfs: propagate umode_t, open-coded S_ISREG ... Browse Code »

  Signed-off-by: Al Viro

  Al Viro

  2012-01-04 11:55:07 +0800