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NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS

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The LAYOUTCOMMIT operation means different things to different layout types.
For blocks and objects, it is both a data and metadata consistency operation.
For files and flexfiles, it is only a metadata consistency operation.

This patch separates out the 2 cases, allowing the files/flexfiles layout
drivers to optimise away the data consistency calls to layoutcommit.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2015-03-25 14:14:42 -04:00
parent 7140171ea9
commit 5bb89b4702
9 changed files with 47 additions and 8 deletions
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fs/nfs/blocklayout/blocklayout.c
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@@ -890,6 +890,7 @@ static struct pnfs_layoutdriver_type blocklayout_type = {
.free_deviceid_node = bl_free_deviceid_node,
.pg_read_ops = &bl_pg_read_ops,
.pg_write_ops = &bl_pg_write_ops,
.sync = pnfs_generic_sync,
};
static int __init nfs4blocklayout_init(void)