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authorOlga Kornievskaia <kolga@netapp.com>2024-05-10 22:07:43 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2024-05-21 15:34:15 +0300
commita01b077a8743b2ed329c587cf4bbe49682da243f (patch)
tree91ad031373204393538bc8452a6588cd147ea297 /fs/nfs
parent523412b904c4ad2e9649d536bde0e6c75c88638b (diff)
downloadlinux-a01b077a8743b2ed329c587cf4bbe49682da243f.tar.xz
pNFS: rework pnfs_generic_pg_check_layout to check IO range
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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/filelayout/filelayout.c6
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.c12
-rw-r--r--fs/nfs/pnfs.c29
-rw-r--r--fs/nfs/pnfs.h3
4 files changed, 14 insertions, 36 deletions
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index bf3ba2e98f33..29d84dc66ca3 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -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),
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 3e724cb7ef01..24188af56d5b 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -823,14 +823,6 @@ 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),
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index a5cc6199127f..b5834728f31b 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -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),
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index db57a85500ee..fa5beeaaf5da 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -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,