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2012-01-03vfs: trim includes a bitAl Viro
[folded fix for missing magic.h from Tetsuo Handa] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch mnt_namespace ->root to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: take /proc/*/mounts and friends to fs/proc_namespace.cAl Viro
rationale: that stuff is far tighter bound to fs/namespace.c than to the guts of procfs proper. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: opencode mntget() mnt_set_mountpoint()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - remaining argument of next_mnt()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: move fsnotify junk to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: move mnt_devnameAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: move mnt_list to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: switch pnode.h macros to struct mount *Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: move the rest of int fields to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_id/mnt_group_id movedAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_ns moved to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - mntput_no_expireAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - do_add_mount and graft_treeAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: take mnt_share/mnt_slave/mnt_slave_list and mnt_expire to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: and now we can make ->mnt_master point to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: take mnt_master to struct mountAl Viro
make IS_MNT_SLAVE take struct mount * at the same time Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - remaining argument of mnt_set_mountpoint()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - propagate_mnt()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - shared subtree iteratorsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - get_dominating_id / do_make_slaveAl Viro
next pile of horrors, similar to mnt_parent one; this time it's mnt_master. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: take mnt_child/mnt_mounts to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: all counters taken to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - work with countersAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: move mnt_mountpoint to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: now it can be done - make mnt_parent point to struct mountAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_parent moved to struct mountAl Viro
the second victim... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - is_path_reachableAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - mnt_has_parentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - do_umount/propagate_mount_busyAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount mnt_set_mountpoint child argumentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - clone_mnt/copy_tree argumentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - shrink_submounts/select_submountsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - umount_tree argumentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: the first spoils - mnt_hash movedAl Viro
taken out of struct vfsmount into struct mount Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount to remaining users of ->mnt_hashAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - clone_mnt/copy_tree resultAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - change_mnt_propagation/set_mnt_sharedAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - alloc_vfsmnt/free_vfsmnt/mnt_alloc_id/mnt_free_idAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - tree_contains_unbindableAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - attach_recursive_mntAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - mount group id handlingAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - commit_treeAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - attach_mnt/detach_mntAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - namespace.c internal iteratorsAl Viro
next_mnt() return value, first argument skip_mnt_tree() return value and argument Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - __propagate_umount() argumentAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: spread struct mount - __lookup_mnt() resultAl Viro
switch __lookup_mnt() to returning struct mount *; callers adjusted. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: start hiding vfsmount guts seriesAl Viro
Almost all fields of struct vfsmount are used only by core VFS (and a fairly small part of it, at that). The plan: embed struct vfsmount into struct mount, making the latter visible only to core parts of VFS. Then move fields from vfsmount to mount, eventually leaving only mnt_root/mnt_sb/mnt_flags in struct vfsmount. Filesystem code still gets pointers to struct vfsmount and remains unchanged; all such pointers go to struct vfsmount embedded into the instances of struct mount allocated by fs/namespace.c. When fs/namespace.c et.al. get a pointer to vfsmount, they turn it into pointer to mount (using container_of) and work with that. This is the first part of series; struct mount is introduced, allocation switched to using it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: fix the rest of sget() racesAl Viro
unfortunately, just checking MS_BORN after having grabbed ->s_umount in sget() is not enough; places that pick superblock from a list and grab s_umount shared need the same check in addition to checking for ->s_root; otherwise three-way race between failing mount, sget() and such list-walker can leave us with list-walker coming *second*, when temporary active ref grabbed by sget() (to be dropped when sget() notices that original mount has failed by checking MS_BORN) has lead to deactivate_locked_super() from failing ->mount() *not* doing ->kill_sb() and just releasing ->s_umount. Once sget() gets through and notices that MS_BORN had never been set it will drop the active ref and fs will be shut down and kicked out of all lists, but it's too late for something like sync_supers(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: new helper - vfs_ustat()Al Viro
... and bury user_get_super()/statfs_by_dentry() - they are purely internal now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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