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NFS: Cleanup the coalescing code

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2007-04-02 18:48:28 -04:00
parent 91e59c368c
commit d8a5ad75cc
4 changed files with 114 additions and 51 deletions
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13
include/linux/nfs_page.h
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@@ -48,6 +48,13 @@ struct nfs_page {
struct nfs_writeverf wb_verf; /* Commit cookie */
};
struct nfs_pageio_descriptor {
struct list_head pg_list;
size_t pg_count;
size_t pg_bsize;
unsigned int pg_base;
};
#define NFS_WBACK_BUSY(req) (test_bit(PG_BUSY,&(req)->wb_flags))
extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx,
@@ -64,8 +71,10 @@ extern long nfs_scan_dirty(struct address_space *mapping,
struct list_head *dst);
extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *head, struct list_head *dst,
unsigned long idx_start, unsigned int npages);
extern int nfs_coalesce_requests(struct list_head *, struct list_head *,
unsigned int);
extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
size_t iosize);
extern void nfs_pageio_add_list(struct nfs_pageio_descriptor *,
struct list_head *);
extern int nfs_wait_on_request(struct nfs_page *);
extern void nfs_unlock_request(struct nfs_page *req);
extern int nfs_set_page_writeback_locked(struct nfs_page *req);