On Wed, May 30, 2018 at 02:05:34PM -0400, Trond Myklebust wrote: > This patchset is something we've been sitting on for a couple of years > in order to allow it to mature. It was mainly developed by Fred Isaman > while he was working for Primary Data, but we've had a few bugfixes > come in since then. > The main reason for delaying the upstream merge was to ensure that > adding layoutget to the OPEN compound was safe (does not cause existing > layouts to be automatically revoked) and that it gives us a real > performance benefit. Do you have any of the performance data? Or just a rough summary explaining when it helps most and by how much? --b. > > Fred Isaman (14): > pnfs: Remove redundant assignment from nfs4_proc_layoutget(). > pnfs: Store return value of decode_layoutget for later processing > NFS4: move ctx into nfs4_run_open_task > pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN > pnfs: refactor send_layoutget > pnfs: move allocations out of nfs4_proc_layoutget > pnfs: Add conditional encode/decode of LAYOUTGET within OPEN compound > pnfs: Move nfs4_opendata into nfs4_fs.h > pnfs: Change pnfs_alloc_init_layoutget_args call signature > pnfs: Add LAYOUTGET to OPEN of a new file > pnfs: Add LAYOUTGET to OPEN of an existing file > pnfs: Stop attempting LAYOUTGET on OPEN on failure > pnfs: Add barrier to prevent lgopen using LAYOUTGET during recall > pnfs: Fix manipulation of NFS_LAYOUT_FIRST_LAYOUTGET > > Trond Myklebust (5): > NFSv4/pnfs: Ensure pnfs_parse_lgopen() won't try to parse > uninitialised data > NFSv4/pnfs: Don't switch off layoutget-on-open for transient errors > pNFS: Don't send LAYOUTGET on OPEN for read, if we already have cached > data > pnfs: Don't call commit on failed layoutget-on-open > pnfs: Don't release the sequence slot until we've processed layoutget > on open > > fs/nfs/callback_proc.c | 2 + > fs/nfs/flexfilelayout/flexfilelayout.c | 1 + > fs/nfs/nfs4_fs.h | 25 +++ > fs/nfs/nfs4proc.c | 97 +++++---- > fs/nfs/nfs4state.c | 8 + > fs/nfs/nfs4xdr.c | 65 +++++- > fs/nfs/pnfs.c | 266 +++++++++++++++++++++---- > fs/nfs/pnfs.h | 28 ++- > include/linux/nfs_fs_sb.h | 2 + > include/linux/nfs_xdr.h | 4 + > 10 files changed, 398 insertions(+), 100 deletions(-) > > -- > 2.17.0 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
