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pNFS: Enable per-layout segment commit structures

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Enable adding and lookup of per-layout segment commits in filelayout
and flexfilelayout.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2020-03-20 18:34:33 -04:00
parent a9901899b6
commit ba827c9abb
4 changed files with 117 additions and 6 deletions
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21
fs/nfs/filelayout/filelayout.c
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@ -1168,6 +1168,26 @@ filelayout_get_ds_info(struct inode *inode)
return &FILELAYOUT_FROM_HDR(layout)->commit_info;
}
static void
filelayout_setup_ds_info(struct pnfs_ds_commit_info *fl_cinfo,
struct pnfs_layout_segment *lseg)
{
struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);
struct inode *inode = lseg->pls_layout->plh_inode;
struct pnfs_commit_array *array, *new;
unsigned int size = (fl->stripe_type == STRIPE_SPARSE) ?
fl->dsaddr->ds_num : fl->dsaddr->stripe_count;
new = pnfs_alloc_commit_array(size, GFP_NOIO);
if (new) {
spin_lock(&inode->i_lock);
array = pnfs_add_commit_array(fl_cinfo, new, lseg);
spin_unlock(&inode->i_lock);
if (array != new)
pnfs_free_commit_array(new);
}
}
static void
filelayout_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo,
struct inode *inode)
@ -1191,6 +1211,7 @@ static struct pnfs_layoutdriver_type filelayout_type = {
.pg_read_ops = &filelayout_pg_read_ops,
.pg_write_ops = &filelayout_pg_write_ops,
.get_ds_info = &filelayout_get_ds_info,
.setup_ds_info = filelayout_setup_ds_info,
.release_ds_info = filelayout_release_ds_info,
.mark_request_commit = filelayout_mark_request_commit,
.clear_request_commit = pnfs_generic_clear_request_commit,