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pNFS: rework pnfs_generic_pg_check_layout to check IO range

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All callers of pnfs_generic_pg_check_layout() also want to do a call to
check that the layout's range covers the IO range. Merge the functionality
of the pnfs_generic_pg_check_range() into that of
pnfs_generic_pg_check_layout().

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Olga Kornievskaia 2024-05-10 15:07:43 -04:00 committed by Trond Myklebust
parent 523412b904
commit a01b077a87
4 changed files with 14 additions and 36 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

6
fs/nfs/filelayout/filelayout.c
View file

@ -867,8 +867,7 @@ static void
filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
{
pnfs_generic_pg_check_layout(pgio);
pnfs_generic_pg_check_range(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
if (!pgio->pg_lseg) {
pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode,
nfs_req_openctx(req),
@ -892,8 +891,7 @@ static void
filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
{
pnfs_generic_pg_check_layout(pgio);
pnfs_generic_pg_check_range(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
if (!pgio->pg_lseg) {
pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode,
nfs_req_openctx(req),

12
fs/nfs/flexfilelayout/flexfilelayout.c
View file

@ -822,14 +822,6 @@ ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio,
}
}
static void
ff_layout_pg_check_layout(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
{
pnfs_generic_pg_check_layout(pgio);
pnfs_generic_pg_check_range(pgio, req);
}
static void
ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
@ -840,7 +832,7 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
u32 ds_idx;
retry:
ff_layout_pg_check_layout(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
/* Use full layout for now */
if (!pgio->pg_lseg) {
ff_layout_pg_get_read(pgio, req, false);
@ -895,7 +887,7 @@ ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,
u32 i;
retry:
ff_layout_pg_check_layout(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
if (!pgio->pg_lseg) {
pgio->pg_lseg =
pnfs_update_layout(pgio->pg_inode, nfs_req_openctx(req),

29
fs/nfs/pnfs.c
View file

@ -2705,38 +2705,28 @@ pnfs_layout_return_unused_byclid(struct nfs_client *clp,
&range);
}
/* Check if we have we have a valid layout but if there isn't an intersection
* between the request and the pgio->pg_lseg, put this pgio->pg_lseg away.
*/
void
pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio)
pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
{
if (pgio->pg_lseg == NULL ||
test_bit(NFS_LSEG_VALID, &pgio->pg_lseg->pls_flags))
(test_bit(NFS_LSEG_VALID, &pgio->pg_lseg->pls_flags) &&
pnfs_lseg_request_intersecting(pgio->pg_lseg, req)))
return;
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = NULL;
}
EXPORT_SYMBOL_GPL(pnfs_generic_pg_check_layout);
/*
* Check for any intersection between the request and the pgio->pg_lseg,
* and if none, put this pgio->pg_lseg away.
*/
void
pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
if (pgio->pg_lseg && !pnfs_lseg_request_intersecting(pgio->pg_lseg, req)) {
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = NULL;
}
}
EXPORT_SYMBOL_GPL(pnfs_generic_pg_check_range);
void
pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
u64 rd_size;
pnfs_generic_pg_check_layout(pgio);
pnfs_generic_pg_check_range(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
if (pgio->pg_lseg == NULL) {
if (pgio->pg_dreq == NULL)
rd_size = i_size_read(pgio->pg_inode) - req_offset(req);
@ -2766,8 +2756,7 @@ void
pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req, u64 wb_size)
{
pnfs_generic_pg_check_layout(pgio);
pnfs_generic_pg_check_range(pgio, req);
pnfs_generic_pg_check_layout(pgio, req);
if (pgio->pg_lseg == NULL) {
pgio->pg_lseg =
pnfs_update_layout(pgio->pg_inode, nfs_req_openctx(req),

3
fs/nfs/pnfs.h
View file

@ -257,8 +257,7 @@ void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *);
void unset_pnfs_layoutdriver(struct nfs_server *);
void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio);
void pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req);
void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio, struct nfs_page *req);
void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,