uprobes: share the i_mmap_rwsem

Both register and unregister call build_map_info() in order to create the
list of mappings before installing or removing breakpoints for every mm
which maps file backed memory.  As such, there is no reason to hold the
i_mmap_rwsem exclusively, so share it and allow concurrent readers to
build the mapping data.

Signed-off-by: Davidlohr Bueso <[email protected]>
Acked-by: Srikar Dronamraju <[email protected]>
Acked-by: "Kirill A. Shutemov" <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Rik van Riel <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions