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| author | Davidlohr Bueso <dave@stgolabs.net> | 2014-12-12 16:54:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 12:42:45 -0800 |
| commit | 4a23717a236b2ab31efb1651f586126789fc997f (patch) | |
| tree | d7123a21a93fff2ee555d76420504329f371a804 /mm | |
| parent | 3dec0ba0be6a532cac949e02b853021bf6d57dad (diff) | |
| download | op-kernel-dev-4a23717a236b2ab31efb1651f586126789fc997f.zip op-kernel-dev-4a23717a236b2ab31efb1651f586126789fc997f.tar.gz | |
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 <dbueso@suse.de>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Oleg Nesterov <oleg@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions
