900148dcac
vfs: spread struct mount - mntput_no_expire
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:09 -05:00
95bc5f25c1
vfs: spread struct mount - do_add_mount and graft_tree
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:09 -05:00
6776db3d32
vfs: take mnt_share/mnt_slave/mnt_slave_list and mnt_expire to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:08 -05:00
32301920f4
vfs: and now we can make ->mnt_master point to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:08 -05:00
d10e8def07
vfs: take mnt_master to struct mount
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make IS_MNT_SLAVE take struct mount * at the same time
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:08 -05:00
14cf1fa8f5
vfs: spread struct mount - remaining argument of mnt_set_mountpoint()
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:07 -05:00
a8d56d8e4f
vfs: spread struct mount - propagate_mnt()
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:07 -05:00
c937135d98
vfs: spread struct mount - shared subtree iterators
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:07 -05:00
6fc7871fed
vfs: spread struct mount - get_dominating_id / do_make_slave
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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>
2012-01-03 22:57:06 -05:00
6b41d536f7
vfs: take mnt_child/mnt_mounts to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:06 -05:00
68e8a9feab
vfs: all counters taken to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:06 -05:00
83adc75322
vfs: spread struct mount - work with counters
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:05 -05:00
a73324da7a
vfs: move mnt_mountpoint to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:05 -05:00
0714a53380
vfs: now it can be done - make mnt_parent point to struct mount
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:05 -05:00
3376f34fff
vfs: mnt_parent moved to struct mount
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the second victim...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:04 -05:00
643822b41e
vfs: spread struct mount - is_path_reachable
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:04 -05:00
676da58df7
vfs: spread struct mount - mnt_has_parent
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:04 -05:00
1ab5973862
vfs: spread struct mount - do_umount/propagate_mount_busy
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:03 -05:00
44d964d609
vfs: spread struct mount mnt_set_mountpoint child argument
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:03 -05:00
87129cc0e3
vfs: spread struct mount - clone_mnt/copy_tree argument
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:03 -05:00
692afc312b
vfs: spread struct mount - shrink_submounts/select_submounts
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:02 -05:00
761d5c38eb
vfs: spread struct mount - umount_tree argument
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:02 -05:00
1b8e5564b9
vfs: the first spoils - mnt_hash moved
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taken out of struct vfsmount into struct mount
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:02 -05:00
d5e50f74dd
vfs: spread struct mount to remaining users of ->mnt_hash
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:01 -05:00
cb338d06e9
vfs: spread struct mount - clone_mnt/copy_tree result
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:01 -05:00
0f0afb1dcf
vfs: spread struct mount - change_mnt_propagation/set_mnt_shared
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:01 -05:00
b105e270b4
vfs: spread struct mount - alloc_vfsmnt/free_vfsmnt/mnt_alloc_id/mnt_free_id
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:00 -05:00
cbbe362cd6
vfs: spread struct mount - tree_contains_unbindable
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:00 -05:00
0fb54e5056
vfs: spread struct mount - attach_recursive_mnt
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:57:00 -05:00
4b8b21f4fe
vfs: spread struct mount - mount group id handling
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:59 -05:00
4b2619a571
vfs: spread struct mount - commit_tree
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:59 -05:00
419148da6e
vfs: spread struct mount - attach_mnt/detach_mnt
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:59 -05:00
315fc83e56
vfs: spread struct mount - namespace.c internal iterators
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next_mnt() return value, first argument
skip_mnt_tree() return value and argument
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:58 -05:00
61ef47b1e4
vfs: spread struct mount - __propagate_umount() argument
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:58 -05:00
c71053659e
vfs: spread struct mount - __lookup_mnt() result
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switch __lookup_mnt() to returning struct mount *; callers adjusted.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:56:58 -05:00
7d6fec45a5
vfs: start hiding vfsmount guts series
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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>
2012-01-03 22:56:57 -05:00
dabe0dc194
vfs: fix the rest of sget() races
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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>
2012-01-03 22:53:10 -05:00
cf31e70d6c
vfs: new helper - vfs_ustat()
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... and bury user_get_super()/statfs_by_dentry() - they are
purely internal now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:53:07 -05:00
c972b4bc83
vfs: live vfsmounts never have NULL ->mnt_sb
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:42 -05:00
4c1d5a64f1
vfs: for usbfs, etc. internal vfsmounts ->mnt_sb->s_root == ->mnt_root
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:41 -05:00
84b92d39f9
vfs: pipe.c is really non-modular
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... so no exitcalls there. Not much would work if pipe(2) would stop
working, after all...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:41 -05:00
6b520e0565
vfs: fix the stupidity with i_dentry in inode destructors
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Seeing that just about every destructor got that INIT_LIST_HEAD() copied into
it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once();
the cost of taking it into inode_init_always() will be negligible for pipes
and sockets and negative for everything else. Not to mention the removal of
boilerplate code from ->destroy_inode() instances...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:40 -05:00
2a79f17e4a
vfs: mnt_drop_write_file()
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new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:40 -05:00
8c9379e972
constify seq_file stuff
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:40 -05:00
79e801a906
vfs: make do_kern_mount() static
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the only user outside of fs/namespace.c has died
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:39 -05:00
a5166169f9
vfs: convert fs_supers to hlist
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:39 -05:00
5352d3b65a
make nfs_follow_remote_path() handle ERR_PTR() passed as root_mnt
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... rather than duplicating that in callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:39 -05:00
5ffc2836a2
vfs: kill ->mnt_devname use in afs printks
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:38 -05:00
e407699ef5
btrfs, nfs, apparmor: don't pull mnt_namespace.h for no reason...
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it's not needed anymore; we used to, back when we had to do
mount_subtree() by hand, complete with put_mnt_ns() in it.
No more... Apparmor didn't need it since the __d_path() fix.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:38 -05:00
aa0a4cf0ab
vfs: dentry_reset_mounted() doesn't use vfsmount argument
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lose it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:52:37 -05:00
Al Viro