X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fnilfs2%2Fdirect.c;h=342d9765df8df2bab8ca8a57869f77bc57f739e5;hb=1ee5332cf67c2f5f468ad1a59033d57453bcad1a;hp=2a546c8f784e0d2bcd85152679c7715f07d5eeb3;hpb=d4b961576df2769b936bd967b01e8c607c3c9ad8;p=mv-sheeva.git

diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index 2a546c8f784..342d9765df8 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -25,6 +25,7 @@
 #include "page.h"
 #include "direct.h"
 #include "alloc.h"
+#include "dat.h"
 
 static inline __le64 *nilfs_direct_dptrs(const struct nilfs_direct *direct)
 {
@@ -62,6 +63,47 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
 	return 0;
 }
 
+static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
+				      __u64 key, __u64 *ptrp,
+				      unsigned maxblocks)
+{
+	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
+	struct inode *dat = NULL;
+	__u64 ptr, ptr2;
+	sector_t blocknr;
+	int ret, cnt;
+
+	if (key > NILFS_DIRECT_KEY_MAX ||
+	    (ptr = nilfs_direct_get_ptr(direct, key)) ==
+	    NILFS_BMAP_INVALID_PTR)
+		return -ENOENT;
+
+	if (NILFS_BMAP_USE_VBN(bmap)) {
+		dat = nilfs_bmap_get_dat(bmap);
+		ret = nilfs_dat_translate(dat, ptr, &blocknr);
+		if (ret < 0)
+			return ret;
+		ptr = blocknr;
+	}
+
+	maxblocks = min_t(unsigned, maxblocks, NILFS_DIRECT_KEY_MAX - key + 1);
+	for (cnt = 1; cnt < maxblocks &&
+		     (ptr2 = nilfs_direct_get_ptr(direct, key + cnt)) !=
+		     NILFS_BMAP_INVALID_PTR;
+	     cnt++) {
+		if (dat) {
+			ret = nilfs_dat_translate(dat, ptr2, &blocknr);
+			if (ret < 0)
+				return ret;
+			ptr2 = blocknr;
+		}
+		if (ptr2 != ptr + cnt)
+			break;
+	}
+	*ptrp = ptr;
+	return cnt;
+}
+
 static __u64
 nilfs_direct_find_target_v(const struct nilfs_direct *direct, __u64 key)
 {
@@ -90,8 +132,8 @@ static int nilfs_direct_prepare_insert(struct nilfs_direct *direct,
 {
 	int ret;
 
-	if (direct->d_ops->dop_find_target != NULL)
-		req->bpr_ptr = direct->d_ops->dop_find_target(direct, key);
+	if (NILFS_BMAP_USE_VBN(&direct->d_bmap))
+		req->bpr_ptr = nilfs_direct_find_target_v(direct, key);
 	ret = nilfs_bmap_prepare_alloc_ptr(&direct->d_bmap, req);
 	if (ret < 0)
 		return ret;
@@ -116,8 +158,8 @@ static void nilfs_direct_commit_insert(struct nilfs_direct *direct,
 	if (!nilfs_bmap_dirty(&direct->d_bmap))
 		nilfs_bmap_set_dirty(&direct->d_bmap);
 
-	if (direct->d_ops->dop_set_target != NULL)
-		direct->d_ops->dop_set_target(direct, key, req->bpr_ptr);
+	if (NILFS_BMAP_USE_VBN(&direct->d_bmap))
+		nilfs_direct_set_target_v(direct, key, req->bpr_ptr);
 }
 
 static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
@@ -297,12 +339,10 @@ static int nilfs_direct_propagate_v(struct nilfs_direct *direct,
 static int nilfs_direct_propagate(const struct nilfs_bmap *bmap,
 				  struct buffer_head *bh)
 {
-	struct nilfs_direct *direct;
+	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
 
-	direct = (struct nilfs_direct *)bmap;
-	return (direct->d_ops->dop_propagate != NULL) ?
-		direct->d_ops->dop_propagate(direct, bh) :
-		0;
+	return NILFS_BMAP_USE_VBN(bmap) ?
+		nilfs_direct_propagate_v(direct, bh) : 0;
 }
 
 static int nilfs_direct_assign_v(struct nilfs_direct *direct,
@@ -362,12 +402,14 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
 		return -EINVAL;
 	}
 
-	return direct->d_ops->dop_assign(direct, key, ptr, bh,
-					 blocknr, binfo);
+	return NILFS_BMAP_USE_VBN(bmap) ?
+		nilfs_direct_assign_v(direct, key, ptr, bh, blocknr, binfo) :
+		nilfs_direct_assign_p(direct, key, ptr, bh, blocknr, binfo);
 }
 
 static const struct nilfs_bmap_operations nilfs_direct_ops = {
 	.bop_lookup		=	nilfs_direct_lookup,
+	.bop_lookup_contig	=	nilfs_direct_lookup_contig,
 	.bop_insert		=	nilfs_direct_insert,
 	.bop_delete		=	nilfs_direct_delete,
 	.bop_clear		=	NULL,
@@ -386,33 +428,8 @@ static const struct nilfs_bmap_operations nilfs_direct_ops = {
 };
 
 
-static const struct nilfs_direct_operations nilfs_direct_ops_v = {
-	.dop_find_target	=	nilfs_direct_find_target_v,
-	.dop_set_target		=	nilfs_direct_set_target_v,
-	.dop_propagate		=	nilfs_direct_propagate_v,
-	.dop_assign		=	nilfs_direct_assign_v,
-};
-
-static const struct nilfs_direct_operations nilfs_direct_ops_p = {
-	.dop_find_target	=	NULL,
-	.dop_set_target		=	NULL,
-	.dop_propagate		=	NULL,
-	.dop_assign		=	nilfs_direct_assign_p,
-};
-
 int nilfs_direct_init(struct nilfs_bmap *bmap)
 {
-	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
-
 	bmap->b_ops = &nilfs_direct_ops;
-	switch (bmap->b_inode->i_ino) {
-	case NILFS_DAT_INO:
-		direct->d_ops = &nilfs_direct_ops_p;
-		break;
-	default:
-		direct->d_ops = &nilfs_direct_ops_v;
-		break;
-	}
-
 	return 0;
 }