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Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h92
1 files changed, 70 insertions, 22 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 4fb309a2b4c..9ae5b765b07 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -32,6 +32,7 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_page.h>
+#include <linux/workqueue.h>
enum {
NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
@@ -46,6 +47,7 @@ struct pnfs_layout_segment {
atomic_t pls_refcount;
unsigned long pls_flags;
struct pnfs_layout_hdr *pls_layout;
+ struct work_struct pls_work;
};
enum pnfs_try_status {
@@ -63,12 +65,15 @@ enum {
NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
NFS_LAYOUT_ROC, /* some lseg had roc bit set */
NFS_LAYOUT_RETURN, /* Return this layout ASAP */
+ NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */
};
enum layoutdriver_policy_flags {
- /* Should the pNFS client commit and return the layout upon a setattr */
+ /* Should the pNFS client commit and return the layout upon truncate to
+ * a smaller size */
PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
+ PNFS_READ_WHOLE_PAGE = 1 << 2,
};
struct nfs4_deviceid_node;
@@ -80,6 +85,7 @@ struct pnfs_layoutdriver_type {
const char *name;
struct module *owner;
unsigned flags;
+ unsigned max_deviceinfo_size;
int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);
int (*clear_layoutdriver) (struct nfs_server *);
@@ -90,6 +96,9 @@ struct pnfs_layoutdriver_type {
struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags);
void (*free_lseg) (struct pnfs_layout_segment *lseg);
+ void (*return_range) (struct pnfs_layout_hdr *lo,
+ struct pnfs_layout_range *range);
+
/* test for nfs page cache coalescing */
const struct nfs_pageio_ops *pg_read_ops;
const struct nfs_pageio_ops *pg_write_ops;
@@ -104,6 +113,8 @@ struct pnfs_layoutdriver_type {
int max);
void (*recover_commit_reqs) (struct list_head *list,
struct nfs_commit_info *cinfo);
+ struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,
+ struct page *page);
int (*commit_pagelist)(struct inode *inode,
struct list_head *mds_pages,
int how,
@@ -113,18 +124,21 @@ struct pnfs_layoutdriver_type {
* Return PNFS_ATTEMPTED to indicate the layout code has attempted
* I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
*/
- enum pnfs_try_status (*read_pagelist) (struct nfs_pgio_data *nfs_data);
- enum pnfs_try_status (*write_pagelist) (struct nfs_pgio_data *nfs_data, int how);
+ enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *);
+ enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int);
void (*free_deviceid_node) (struct nfs4_deviceid_node *);
+ struct nfs4_deviceid_node * (*alloc_deviceid_node)
+ (struct nfs_server *server, struct pnfs_device *pdev,
+ gfp_t gfp_flags);
void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid,
struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args);
void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data);
-
- void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid,
+ int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args);
+ void (*encode_layoutcommit) (struct pnfs_layout_hdr *lo,
struct xdr_stream *xdr,
const struct nfs4_layoutcommit_args *args);
};
@@ -167,9 +181,6 @@ extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *);
extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *);
/* nfs4proc.c */
-extern int nfs4_proc_getdevicelist(struct nfs_server *server,
- const struct nfs_fh *fh,
- struct pnfs_devicelist *devlist);
extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,
struct pnfs_device *dev,
struct rpc_cred *cred);
@@ -179,6 +190,7 @@ extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp);
/* pnfs.c */
void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo);
void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
+void pnfs_put_lseg_locked(struct pnfs_layout_segment *lseg);
void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);
void unset_pnfs_layoutdriver(struct nfs_server *);
@@ -213,13 +225,14 @@ bool pnfs_roc(struct inode *ino);
void pnfs_roc_release(struct inode *ino);
void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task);
-void pnfs_set_layoutcommit(struct nfs_pgio_data *wdata);
+void pnfs_set_layoutcommit(struct nfs_pgio_header *);
+void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data);
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
int _pnfs_return_layout(struct inode *);
int pnfs_commit_and_return_layout(struct inode *);
-void pnfs_ld_write_done(struct nfs_pgio_data *);
-void pnfs_ld_read_done(struct nfs_pgio_data *);
+void pnfs_ld_write_done(struct nfs_pgio_header *);
+void pnfs_ld_read_done(struct nfs_pgio_header *);
struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
struct nfs_open_context *ctx,
loff_t pos,
@@ -228,12 +241,8 @@ struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
gfp_t gfp_flags);
void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp);
-int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *head,
- const struct nfs_pgio_completion_ops *compl_ops,
- struct nfs_direct_req *dreq);
-int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head,
- const struct nfs_pgio_completion_ops *compl_ops,
- struct nfs_direct_req *dreq);
+int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *);
+int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *);
struct nfs4_threshold *pnfs_mdsthreshold_alloc(void);
/* nfs4_deviceid_flags */
@@ -254,18 +263,25 @@ struct nfs4_deviceid_node {
atomic_t ref;
};
-struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
+struct nfs4_deviceid_node *
+nfs4_find_get_deviceid(struct nfs_server *server,
+ const struct nfs4_deviceid *id, struct rpc_cred *cred,
+ gfp_t gfp_mask);
void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
-void nfs4_init_deviceid_node(struct nfs4_deviceid_node *,
- const struct pnfs_layoutdriver_type *,
- const struct nfs_client *,
+void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *,
const struct nfs4_deviceid *);
-struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *);
bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);
bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);
void nfs4_deviceid_purge_client(const struct nfs_client *);
+static inline struct nfs4_deviceid_node *
+nfs4_get_deviceid(struct nfs4_deviceid_node *d)
+{
+ atomic_inc(&d->ref);
+ return d;
+}
+
static inline struct pnfs_layout_segment *
pnfs_get_lseg(struct pnfs_layout_segment *lseg)
{
@@ -345,6 +361,17 @@ pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list,
NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo);
}
+static inline struct nfs_page *
+pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
+ struct page *page)
+{
+ struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
+
+ if (ld == NULL || ld->search_commit_reqs == NULL)
+ return NULL;
+ return ld->search_commit_reqs(cinfo, page);
+}
+
/* Should the pNFS client commit and return the layout upon a setattr */
static inline bool
pnfs_ld_layoutret_on_setattr(struct inode *inode)
@@ -356,6 +383,14 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode)
}
static inline bool
+pnfs_ld_read_whole_page(struct inode *inode)
+{
+ if (!pnfs_enabled_sb(NFS_SERVER(inode)))
+ return false;
+ return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE;
+}
+
+static inline bool
pnfs_layoutcommit_outstanding(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
@@ -427,6 +462,12 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode)
}
static inline bool
+pnfs_ld_read_whole_page(struct inode *inode)
+{
+ return false;
+}
+
+static inline bool
pnfs_roc(struct inode *ino)
{
return false;
@@ -496,6 +537,13 @@ pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list,
{
}
+static inline struct nfs_page *
+pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
+ struct page *page)
+{
+ return NULL;
+}
+
static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
{
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-14 06:55:31 +0000