tree d32ec4949a0a9721e8955e7f0e98130019d95849
parent 927ffe7c9a156e259aae31c07dd76072c459ec57
author Alasdair G Kergon <agk@redhat.com> 1159863328 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159887854 -0700

[PATCH] dm snapshot: tidy snapshot_map

This patch rearranges the snapshot_map code so that the functional changes in
subsequent patches are clearer.

The only functional change is to replace the existing read lock with a write
lock which the next patch needs.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>