tree ab0008be38ef4d2789aee16d084fdaa2d5acfc32
parent a2df2a63407803a833f82e1fa6693826c8c9d584
author Amit Arora <aarora@in.ibm.com> 1184722958 -0400
committer Theodore Ts'o <tytso@mit.edu> 1184722958 -0400

write support for preallocated blocks

This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.

Signed-off-by: Amit Arora <aarora@in.ibm.com>