FF_FLAGS_NO_READ_IO is a hint the mds can use to inform the
client that an IOMODE_RW layout segment should not be used
for READ traffic and that the client should instead request
an IOMODE_READ layout segment. This can be used to isolate
only WRITE traffic onto the IOMODE_RW layout segment.
Tom Haynes (3):
nfs/flexfiles: Helper function to detect FF_FLAGS_NO_READ_IO
nfs/flexfiles: Use the layout segment for reading unless it a
IOMODE_RW and reading is disabled
pnfs: pnfs_update_layout needs to consider if strict iomode checking
is on
fs/nfs/filelayout/filelayout.c | 2 ++
fs/nfs/flexfilelayout/flexfilelayout.c | 50 +++++++++++++++++++++++--------
fs/nfs/flexfilelayout/flexfilelayout.h | 10 ++++++-
fs/nfs/flexfilelayout/flexfilelayoutdev.c | 6 ++++
fs/nfs/pnfs.c | 34 +++++++++++++--------
fs/nfs/pnfs.h | 1 +
6 files changed, 77 insertions(+), 26 deletions(-)
--
1.8.3.1
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