These have already been discussed in a lkml thread for a while, so
I wanted to formally send them out. The problem was that as part of
a AIM7 regression we saw that we spend a lot of time looking up
extent records. I turns out that the current delayed write path
is horribly inefficient, and we can generall do with a single btree
lookup for the write path. Also xfs_inode_set_eofblocks_tag turns
out to trash the cache quite bad, so add a trivial flag to avoid
it if we can.
Compared to the git tree under discussion only one changelog has
been updated, and I've added a copyright statement to xfs_iomap.c
now that it has a lot of my code.
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