[PATCH 0/2] btrfs: teach send to avoid trashing the page cache with data

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

When doing a send operation, we read the data of all extents we need to
send into the page cache, which almost always is wasteful as it can lead
to eviction of other things from the page cache that are more useful for
applications (and maybe other kernel subsystems). This patchset makes send
evict the data from the page cache once it has sent it. The actual work
is in the second patch, while the first one is just preparatory work.
More details in the changelogs.

Filipe Manana (2):
  btrfs: send: keep the current inode open while processing it
  btrfs: send: avoid trashing the page cache

 fs/btrfs/send.c | 128 +++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 109 insertions(+), 19 deletions(-)

-- 
2.35.1