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authorBenny Halevy <bhalevy@panasas.com>2011-05-22 19:51:33 +0300
committerBoaz Harrosh <bharrosh@panasas.com>2011-05-29 20:53:50 +0300
commit636fb9c89d7e216aac3d406e458864420057e981 (patch)
tree4342ccf39c4b4b26bdcf79833c7f98f8b9913262
parentb6c05f1693115164c7b797152ac7ea3ef8e5d296 (diff)
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pnfs: alloc and free layout_hdr layoutdriver methods
[gfp_flags] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
-rw-r--r--fs/nfs/pnfs.c21
-rw-r--r--fs/nfs/pnfs.h4
2 files changed, 22 insertions, 3 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 20436a5e76cd..ef535f2a2c74 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -177,13 +177,28 @@ get_layout_hdr(struct pnfs_layout_hdr *lo)
atomic_inc(&lo->plh_refcount);
}
+static struct pnfs_layout_hdr *
+pnfs_alloc_layout_hdr(struct inode *ino, gfp_t gfp_flags)
+{
+ struct pnfs_layoutdriver_type *ld = NFS_SERVER(ino)->pnfs_curr_ld;
+ return ld->alloc_layout_hdr ? ld->alloc_layout_hdr(ino, gfp_flags) :
+ kzalloc(sizeof(struct pnfs_layout_hdr), gfp_flags);
+}
+
+static void
+pnfs_free_layout_hdr(struct pnfs_layout_hdr *lo)
+{
+ struct pnfs_layoutdriver_type *ld = NFS_SERVER(lo->plh_inode)->pnfs_curr_ld;
+ return ld->alloc_layout_hdr ? ld->free_layout_hdr(lo) : kfree(lo);
+}
+
static void
destroy_layout_hdr(struct pnfs_layout_hdr *lo)
{
dprintk("%s: freeing layout cache %p\n", __func__, lo);
BUG_ON(!list_empty(&lo->plh_layouts));
NFS_I(lo->plh_inode)->layout = NULL;
- kfree(lo);
+ pnfs_free_layout_hdr(lo);
}
static void
@@ -744,7 +759,7 @@ alloc_init_layout_hdr(struct inode *ino, gfp_t gfp_flags)
{
struct pnfs_layout_hdr *lo;
- lo = kzalloc(sizeof(struct pnfs_layout_hdr), gfp_flags);
+ lo = pnfs_alloc_layout_hdr(ino, gfp_flags);
if (!lo)
return NULL;
atomic_set(&lo->plh_refcount, 1);
@@ -777,7 +792,7 @@ pnfs_find_alloc_layout(struct inode *ino, gfp_t gfp_flags)
if (likely(nfsi->layout == NULL)) /* Won the race? */
nfsi->layout = new;
else
- kfree(new);
+ pnfs_free_layout_hdr(new);
return nfsi->layout;
}
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index f37ab3539cbf..925d6ef8ba79 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -73,6 +73,10 @@ struct pnfs_layoutdriver_type {
const u32 id;
const char *name;
struct module *owner;
+
+ struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
+ void (*free_layout_hdr) (struct pnfs_layout_hdr *);
+
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);