NFSv4.1: Ensure that layoutget uses the correct gfp modes

[pandora-kernel.git] / fs / nfs / pnfs.c

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 65455f5..f57f528 100644 (file)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -467,7 +467,8 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
 static struct pnfs_layout_segment *
 send_layoutget(struct pnfs_layout_hdr *lo,
           struct nfs_open_context *ctx,
-          u32 iomode)
+          u32 iomode,
+          gfp_t gfp_flags)
 {
        struct inode *ino = lo->plh_inode;
        struct nfs_server *server = NFS_SERVER(ino);
@@ -480,7 +481,7 @@ send_layoutget(struct pnfs_layout_hdr *lo,
        dprintk("--> %s\n", __func__);
 
        BUG_ON(ctx == NULL);
-       lgp = kzalloc(sizeof(*lgp), GFP_KERNEL);
+       lgp = kzalloc(sizeof(*lgp), gfp_flags);
        if (lgp == NULL)
                return NULL;
 
@@ -488,12 +489,12 @@ send_layoutget(struct pnfs_layout_hdr *lo,
        max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
        max_pages = max_resp_sz >> PAGE_SHIFT;
 
-       pages = kzalloc(max_pages * sizeof(struct page *), GFP_KERNEL);
+       pages = kzalloc(max_pages * sizeof(struct page *), gfp_flags);
        if (!pages)
                goto out_err_free;
 
        for (i = 0; i < max_pages; i++) {
-               pages[i] = alloc_page(GFP_KERNEL);
+               pages[i] = alloc_page(gfp_flags);
                if (!pages[i])
                        goto out_err_free;
        }
@@ -509,6 +510,7 @@ send_layoutget(struct pnfs_layout_hdr *lo,
        lgp->args.layout.pages = pages;
        lgp->args.layout.pglen = max_pages * PAGE_SIZE;
        lgp->lsegpp = &lseg;
+       lgp->gfp_flags = gfp_flags;
 
        /* Synchronously retrieve layout information from server and
         * store in lseg.
@@ -666,11 +668,11 @@ pnfs_insert_layout(struct pnfs_layout_hdr *lo,
 }
 
 static struct pnfs_layout_hdr *
-alloc_init_layout_hdr(struct inode *ino)
+alloc_init_layout_hdr(struct inode *ino, gfp_t gfp_flags)
 {
        struct pnfs_layout_hdr *lo;
 
-       lo = kzalloc(sizeof(struct pnfs_layout_hdr), GFP_KERNEL);
+       lo = kzalloc(sizeof(struct pnfs_layout_hdr), gfp_flags);
        if (!lo)
                return NULL;
        atomic_set(&lo->plh_refcount, 1);
@@ -682,7 +684,7 @@ alloc_init_layout_hdr(struct inode *ino)
 }
 
 static struct pnfs_layout_hdr *
-pnfs_find_alloc_layout(struct inode *ino)
+pnfs_find_alloc_layout(struct inode *ino, gfp_t gfp_flags)
 {
        struct nfs_inode *nfsi = NFS_I(ino);
        struct pnfs_layout_hdr *new = NULL;
@@ -697,7 +699,7 @@ pnfs_find_alloc_layout(struct inode *ino)
                        return nfsi->layout;
        }
        spin_unlock(&ino->i_lock);
-       new = alloc_init_layout_hdr(ino);
+       new = alloc_init_layout_hdr(ino, gfp_flags);
        spin_lock(&ino->i_lock);
 
        if (likely(nfsi->layout == NULL))       /* Won the race? */
@@ -757,7 +759,8 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo, u32 iomode)
 struct pnfs_layout_segment *
 pnfs_update_layout(struct inode *ino,
                   struct nfs_open_context *ctx,
-                  enum pnfs_iomode iomode)
+                  enum pnfs_iomode iomode,
+                  gfp_t gfp_flags)
 {
        struct nfs_inode *nfsi = NFS_I(ino);
        struct nfs_client *clp = NFS_SERVER(ino)->nfs_client;
@@ -768,7 +771,7 @@ pnfs_update_layout(struct inode *ino,
        if (!pnfs_enabled_sb(NFS_SERVER(ino)))
                return NULL;
        spin_lock(&ino->i_lock);
-       lo = pnfs_find_alloc_layout(ino);
+       lo = pnfs_find_alloc_layout(ino, gfp_flags);
        if (lo == NULL) {
                dprintk("%s ERROR: can't get pnfs_layout_hdr\n", __func__);
                goto out_unlock;
@@ -808,7 +811,7 @@ pnfs_update_layout(struct inode *ino,
                spin_unlock(&clp->cl_lock);
        }
 
-       lseg = send_layoutget(lo, ctx, iomode);
+       lseg = send_layoutget(lo, ctx, iomode, gfp_flags);
        if (!lseg && first) {
                spin_lock(&clp->cl_lock);
                list_del_init(&lo->plh_layouts);
@@ -847,7 +850,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
                goto out;
        }
        /* Inject layout blob into I/O device driver */
-       lseg = NFS_SERVER(ino)->pnfs_curr_ld->alloc_lseg(lo, res);
+       lseg = NFS_SERVER(ino)->pnfs_curr_ld->alloc_lseg(lo, res, lgp->gfp_flags);
        if (!lseg || IS_ERR(lseg)) {
                if (!lseg)
                        status = -ENOMEM;
@@ -900,7 +903,8 @@ static int pnfs_read_pg_test(struct nfs_pageio_descriptor *pgio,
                /* This is first coelesce call for a series of nfs_pages */
                pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
                                                   prev->wb_context,
-                                                  IOMODE_READ);
+                                                  IOMODE_READ,
+                                                  GFP_KERNEL);
        }
        return NFS_SERVER(pgio->pg_inode)->pnfs_curr_ld->pg_test(pgio, prev, req);
 }
@@ -922,7 +926,8 @@ static int pnfs_write_pg_test(struct nfs_pageio_descriptor *pgio,
                /* This is first coelesce call for a series of nfs_pages */
                pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
                                                   prev->wb_context,
-                                                  IOMODE_RW);
+                                                  IOMODE_RW,
+                                                  GFP_NOFS);
        }
        return NFS_SERVER(pgio->pg_inode)->pnfs_curr_ld->pg_test(pgio, prev, req);
 }