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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-18 13:29:36 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-18 13:54:59 +0100 |
| commit | 27cb1572e3e6bb1f8cf6bb3d74c914a87b131792 (patch) | |
| tree | 01e6510de480d3595ccff315d777770490e51f9c /scripts/headers_check.pl | |
| parent | vfs: split off vfsmount-related parts of vfs_kern_mount() (diff) | |
| download | linux-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.tar.xz linux-27cb1572e3e6bb1f8cf6bb3d74c914a87b131792.zip | |
fix deadlock in pivot_root()
Don't hold vfsmount_lock over the loop traversing ->mnt_parent;
do check_mnt(new.mnt) under namespace_sem instead; combined with
namespace_sem held over all that code it'll guarantee the stability
of ->mnt_parent chain all the way to the root.
Doing check_mnt() outside of namespace_sem in case of pivot_root()
is wrong anyway.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'scripts/headers_check.pl')
0 files changed, 0 insertions, 0 deletions