1 files changed, 57 insertions, 42 deletions

diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index c3e82bd23179..e0449c10286a 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -354,22 +354,31 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip)
 		return ERR_PTR(-EIO);
 	}
 
-	hc = kmalloc(hsize, GFP_NOFS);
-	ret = -ENOMEM;
+	hc = kmalloc(hsize, GFP_NOFS | __GFP_NOWARN);
+	if (hc == NULL)
+		hc = __vmalloc(hsize, GFP_NOFS, PAGE_KERNEL);
+
 	if (hc == NULL)
 		return ERR_PTR(-ENOMEM);
 
 	ret = gfs2_dir_read_data(ip, hc, hsize);
 	if (ret < 0) {
-		kfree(hc);
+		if (is_vmalloc_addr(hc))
+			vfree(hc);
+		else
+			kfree(hc);
 		return ERR_PTR(ret);
 	}
 
 	spin_lock(&inode->i_lock);
-	if (ip->i_hash_cache)
-		kfree(hc);
-	else
+	if (ip->i_hash_cache) {
+		if (is_vmalloc_addr(hc))
+			vfree(hc);
+		else
+			kfree(hc);
+	} else {
 		ip->i_hash_cache = hc;
+	}
 	spin_unlock(&inode->i_lock);
 
 	return ip->i_hash_cache;
@@ -385,7 +394,10 @@ void gfs2_dir_hash_inval(struct gfs2_inode *ip)
 {
 	__be64 *hc = ip->i_hash_cache;
 	ip->i_hash_cache = NULL;
-	kfree(hc);
+	if (is_vmalloc_addr(hc))
+		vfree(hc);
+	else
+		kfree(hc);
 }
 
 static inline int gfs2_dirent_sentinel(const struct gfs2_dirent *dent)
@@ -1113,7 +1125,10 @@ static int dir_double_exhash(struct gfs2_inode *dip)
 	if (IS_ERR(hc))
 		return PTR_ERR(hc);
 
-	h = hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS);
+	h = hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS | __GFP_NOWARN);
+	if (hc2 == NULL)
+		hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS, PAGE_KERNEL);
+
 	if (!hc2)
 		return -ENOMEM;
 
@@ -1145,7 +1160,10 @@ fail:
 	gfs2_dinode_out(dip, dibh->b_data);
 	brelse(dibh);
 out_kfree:
-	kfree(hc2);
+	if (is_vmalloc_addr(hc2))
+		vfree(hc2);
+	else
+		kfree(hc2);
 	return error;
 }
 
@@ -1194,9 +1212,7 @@ static int compare_dents(const void *a, const void *b)
 /**
  * do_filldir_main - read out directory entries
  * @dip: The GFS2 inode
- * @offset: The offset in the file to read from
- * @opaque: opaque data to pass to filldir
- * @filldir: The function to pass entries to
+ * @ctx: what to feed the entries to
  * @darr: an array of struct gfs2_dirent pointers to read
  * @entries: the number of entries in darr
  * @copied: pointer to int that's non-zero if a entry has been copied out
@@ -1206,11 +1222,10 @@ static int compare_dents(const void *a, const void *b)
  * the possibility that they will fall into different readdir buffers or
  * that someone will want to seek to that location.
  *
- * Returns: errno, >0 on exception from filldir
+ * Returns: errno, >0 if the actor tells you to stop
  */
 
-static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
-			   void *opaque, filldir_t filldir,
+static int do_filldir_main(struct gfs2_inode *dip, struct dir_context *ctx,
 			   const struct gfs2_dirent **darr, u32 entries,
 			   int *copied)
 {
@@ -1218,7 +1233,6 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
 	u64 off, off_next;
 	unsigned int x, y;
 	int run = 0;
-	int error = 0;
 
 	sort(darr, entries, sizeof(struct gfs2_dirent *), compare_dents, NULL);
 
@@ -1235,9 +1249,9 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
 			off_next = be32_to_cpu(dent_next->de_hash);
 			off_next = gfs2_disk_hash2offset(off_next);
 
-			if (off < *offset)
+			if (off < ctx->pos)
 				continue;
-			*offset = off;
+			ctx->pos = off;
 
 			if (off_next == off) {
 				if (*copied && !run)
@@ -1246,26 +1260,25 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
 			} else
 				run = 0;
 		} else {
-			if (off < *offset)
+			if (off < ctx->pos)
 				continue;
-			*offset = off;
+			ctx->pos = off;
 		}
 
-		error = filldir(opaque, (const char *)(dent + 1),
+		if (!dir_emit(ctx, (const char *)(dent + 1),
 				be16_to_cpu(dent->de_name_len),
-				off, be64_to_cpu(dent->de_inum.no_addr),
-				be16_to_cpu(dent->de_type));
-		if (error)
+				be64_to_cpu(dent->de_inum.no_addr),
+				be16_to_cpu(dent->de_type)))
 			return 1;
 
 		*copied = 1;
 	}
 
-	/* Increment the *offset by one, so the next time we come into the
+	/* Increment the ctx->pos by one, so the next time we come into the
 	   do_filldir fxn, we get the next entry instead of the last one in the
 	   current leaf */
 
-	(*offset)++;
+	ctx->pos++;
 
 	return 0;
 }
@@ -1289,8 +1302,8 @@ static void gfs2_free_sort_buffer(void *ptr)
 		kfree(ptr);
 }
 
-static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
-			      filldir_t filldir, int *copied, unsigned *depth,
+static int gfs2_dir_read_leaf(struct inode *inode, struct dir_context *ctx,
+			      int *copied, unsigned *depth,
 			      u64 leaf_no)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
@@ -1368,8 +1381,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
 	} while(lfn);
 
 	BUG_ON(entries2 != entries);
-	error = do_filldir_main(ip, offset, opaque, filldir, darr,
-				entries, copied);
+	error = do_filldir_main(ip, ctx, darr, entries, copied);
 out_free:
 	for(i = 0; i < leaf; i++)
 		brelse(larr[i]);
@@ -1428,15 +1440,13 @@ static void gfs2_dir_readahead(struct inode *inode, unsigned hsize, u32 index,
 /**
  * dir_e_read - Reads the entries from a directory into a filldir buffer
  * @dip: dinode pointer
- * @offset: the hash of the last entry read shifted to the right once
- * @opaque: buffer for the filldir function to fill
- * @filldir: points to the filldir function to use
+ * @ctx: actor to feed the entries to
  *
  * Returns: errno
  */
 
-static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
-		      filldir_t filldir, struct file_ra_state *f_ra)
+static int dir_e_read(struct inode *inode, struct dir_context *ctx,
+		      struct file_ra_state *f_ra)
 {
 	struct gfs2_inode *dip = GFS2_I(inode);
 	u32 hsize, len = 0;
@@ -1447,7 +1457,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
 	unsigned depth = 0;
 
 	hsize = 1 << dip->i_depth;
-	hash = gfs2_dir_offset2hash(*offset);
+	hash = gfs2_dir_offset2hash(ctx->pos);
 	index = hash >> (32 - dip->i_depth);
 
 	if (dip->i_hash_cache == NULL)
@@ -1459,7 +1469,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
 	gfs2_dir_readahead(inode, hsize, index, f_ra);
 
 	while (index < hsize) {
-		error = gfs2_dir_read_leaf(inode, offset, opaque, filldir,
+		error = gfs2_dir_read_leaf(inode, ctx,
 					   &copied, &depth,
 					   be64_to_cpu(lp[index]));
 		if (error)
@@ -1474,8 +1484,8 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
 	return error;
 }
 
-int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
-		  filldir_t filldir, struct file_ra_state *f_ra)
+int gfs2_dir_read(struct inode *inode, struct dir_context *ctx,
+		  struct file_ra_state *f_ra)
 {
 	struct gfs2_inode *dip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -1489,7 +1499,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
 		return 0;
 
 	if (dip->i_diskflags & GFS2_DIF_EXHASH)
-		return dir_e_read(inode, offset, opaque, filldir, f_ra);
+		return dir_e_read(inode, ctx, f_ra);
 
 	if (!gfs2_is_stuffed(dip)) {
 		gfs2_consist_inode(dip);
@@ -1521,7 +1531,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
 			error = -EIO;
 			goto out;
 		}
-		error = do_filldir_main(dip, offset, opaque, filldir, darr,
+		error = do_filldir_main(dip, ctx, darr,
 					dip->i_entries, &copied);
 out:
 		kfree(darr);
@@ -1846,6 +1856,8 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
 	memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
 
 	ht = kzalloc(size, GFP_NOFS);
+	if (ht == NULL)
+		ht = vzalloc(size);
 	if (!ht)
 		return -ENOMEM;
 
@@ -1933,7 +1945,10 @@ out_rlist:
 	gfs2_rlist_free(&rlist);
 	gfs2_quota_unhold(dip);
 out:
-	kfree(ht);
+	if (is_vmalloc_addr(ht))
+		vfree(ht);
+	else
+		kfree(ht);
 	return error;
 }