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authorAl Viro <viro@zeniv.linux.org.uk>2010-03-22 15:22:31 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-05-21 18:31:14 -0400
commit1712ac8fda7d8bc4dc921f5777b7423aacad7263 (patch)
tree1493bc7166ace04d9ac2f4d5383eaab1d43e17c4 /fs/drop_caches.c
parentb20bd1a5e78af267dc4b6e1ffed48d5d776302c5 (diff)
downloadlinux-1712ac8fda7d8bc4dc921f5777b7423aacad7263.tar.gz
Saner locking around deactivate_super()
Make sure that s_umount is acquired *before* we drop the final active reference; we still have the fast path (atomic_dec_unless) and we have gotten rid of the window between the moment when s_active hits zero and s_umount is acquired. Which simplifies the living hell out of grab_super() and inotify pin_to_kill() stuff. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/drop_caches.c')
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