diff options
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 57 |
1 files changed, 31 insertions, 26 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 7ec46d5f05a..69a0c3f1e46 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -911,7 +911,7 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo, * Layout segment is retreived from the server if not cached. * The appropriate layout segment is referenced and returned to the caller. */ -struct pnfs_layout_segment * +static struct pnfs_layout_segment * pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx, loff_t pos, @@ -1055,6 +1055,34 @@ out_forget_reply: goto out; } +void +pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) +{ + BUG_ON(pgio->pg_lseg != NULL); + + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + req_offset(req), + req->wb_bytes, + IOMODE_READ, + GFP_KERNEL); +} +EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_read); + +void +pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) +{ + BUG_ON(pgio->pg_lseg != NULL); + + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, + req->wb_context, + req_offset(req), + req->wb_bytes, + IOMODE_RW, + GFP_NOFS); +} +EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_write); + bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode) { @@ -1083,31 +1111,8 @@ bool pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req) { - enum pnfs_iomode access_type; - gfp_t gfp_flags; - - /* We assume that pg_ioflags == 0 iff we're reading a page */ - if (pgio->pg_ioflags == 0) { - access_type = IOMODE_READ; - gfp_flags = GFP_KERNEL; - } else { - access_type = IOMODE_RW; - gfp_flags = GFP_NOFS; - } - - if (pgio->pg_lseg == NULL) { - if (pgio->pg_count != prev->wb_bytes) - return true; - /* This is first coelesce call for a series of nfs_pages */ - pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, - prev->wb_context, - req_offset(prev), - pgio->pg_count, - access_type, - gfp_flags); - if (pgio->pg_lseg == NULL) - return true; - } + if (pgio->pg_lseg == NULL) + return nfs_generic_pg_test(pgio, prev, req); /* * Test if a nfs_page is fully contained in the pnfs_layout_range. |