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authorSage Weil <sage@newdream.net>2009-10-06 11:31:09 -0700
committerSage Weil <sage@newdream.net>2009-10-06 11:31:09 -0700
commit1d3576fd10f0d7a104204267b81cf84a07028dad (patch)
tree4567d205f28255ca7211b82c962ad42fd55e733b /fs/ceph/mdsmap.c
parent124e68e74099090e28da5518f73fda878e7e8232 (diff)
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ceph: address space operations
The ceph address space methods are concerned primarily with managing the dirty page accounting in the inode, which (among other things) must keep track of which snapshot context each page was dirtied in, and ensure that dirty data is written out to the OSDs in snapshort order. A writepage() on a page that is not currently writeable due to snapshot writeback ordering constraints is ignored (it was presumably called from kswapd). Signed-off-by: Sage Weil <sage@newdream.net>
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