1 files changed, 31 insertions, 17 deletions

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 3743bd849bce..29e6dc7299b8 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -23,11 +23,14 @@
 #include <linux/bitops.h>
 #include <linux/blkdev.h>
 #include <asm/byteorder.h>
+
 #include "ext4.h"
 #include "ext4_jbd2.h"
 #include "xattr.h"
 #include "acl.h"
 
+#include <trace/events/ext4.h>
+
 /*
  * ialloc.c contains the inodes allocation and deallocation routines
  */
@@ -208,11 +211,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
 
 	ino = inode->i_ino;
 	ext4_debug("freeing inode %lu\n", ino);
-	trace_mark(ext4_free_inode,
-		   "dev %s ino %lu mode %d uid %lu gid %lu bocks %llu",
-		   sb->s_id, inode->i_ino, inode->i_mode,
-		   (unsigned long) inode->i_uid, (unsigned long) inode->i_gid,
-		   (unsigned long long) inode->i_blocks);
+	trace_ext4_free_inode(inode);
 
 	/*
 	 * Note: we must free any quota before locking the superblock,
@@ -471,7 +470,8 @@ void get_orlov_stats(struct super_block *sb, ext4_group_t g,
  */
 
 static int find_group_orlov(struct super_block *sb, struct inode *parent,
-			    ext4_group_t *group, int mode)
+			    ext4_group_t *group, int mode,
+			    const struct qstr *qstr)
 {
 	ext4_group_t parent_group = EXT4_I(parent)->i_block_group;
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -486,6 +486,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
 	struct ext4_group_desc *desc;
 	struct orlov_stats stats;
 	int flex_size = ext4_flex_bg_size(sbi);
+	struct dx_hash_info hinfo;
 
 	ngroups = real_ngroups;
 	if (flex_size > 1) {
@@ -507,7 +508,13 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
 		int best_ndir = inodes_per_group;
 		int ret = -1;
 
-		get_random_bytes(&grp, sizeof(grp));
+		if (qstr) {
+			hinfo.hash_version = DX_HASH_HALF_MD4;
+			hinfo.seed = sbi->s_hash_seed;
+			ext4fs_dirhash(qstr->name, qstr->len, &hinfo);
+			grp = hinfo.hash;
+		} else
+			get_random_bytes(&grp, sizeof(grp));
 		parent_group = (unsigned)grp % ngroups;
 		for (i = 0; i < ngroups; i++) {
 			g = (parent_group + i) % ngroups;
@@ -650,7 +657,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
 		*group = parent_group + flex_size;
 		if (*group > ngroups)
 			*group = 0;
-		return find_group_orlov(sb, parent, group, mode);
+		return find_group_orlov(sb, parent, group, mode, 0);
 	}
 
 	/*
@@ -791,7 +798,8 @@ err_ret:
  * For other inodes, search forward from the parent directory's block
  * group to find a free inode.
  */
-struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
+struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode,
+			     const struct qstr *qstr, __u32 goal)
 {
 	struct super_block *sb;
 	struct buffer_head *inode_bitmap_bh = NULL;
@@ -815,14 +823,23 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
 
 	sb = dir->i_sb;
 	ngroups = ext4_get_groups_count(sb);
-	trace_mark(ext4_request_inode, "dev %s dir %lu mode %d", sb->s_id,
-		   dir->i_ino, mode);
+	trace_ext4_request_inode(dir, mode);
 	inode = new_inode(sb);
 	if (!inode)
 		return ERR_PTR(-ENOMEM);
 	ei = EXT4_I(inode);
 	sbi = EXT4_SB(sb);
 
+	if (!goal)
+		goal = sbi->s_inode_goal;
+
+	if (goal && goal <= le32_to_cpu(sbi->s_es->s_inodes_count)) {
+		group = (goal - 1) / EXT4_INODES_PER_GROUP(sb);
+		ino = (goal - 1) % EXT4_INODES_PER_GROUP(sb);
+		ret2 = 0;
+		goto got_group;
+	}
+
 	if (sbi->s_log_groups_per_flex && test_opt(sb, OLDALLOC)) {
 		ret2 = find_group_flex(sb, dir, &group);
 		if (ret2 == -1) {
@@ -841,7 +858,7 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
 		if (test_opt(sb, OLDALLOC))
 			ret2 = find_group_dir(sb, dir, &group);
 		else
-			ret2 = find_group_orlov(sb, dir, &group, mode);
+			ret2 = find_group_orlov(sb, dir, &group, mode, qstr);
 	} else
 		ret2 = find_group_other(sb, dir, &group, mode);
 
@@ -851,7 +868,7 @@ got_group:
 	if (ret2 == -1)
 		goto out;
 
-	for (i = 0; i < ngroups; i++) {
+	for (i = 0; i < ngroups; i++, ino = 0) {
 		err = -EIO;
 
 		gdp = ext4_get_group_desc(sb, group, &group_desc_bh);
@@ -863,8 +880,6 @@ got_group:
 		if (!inode_bitmap_bh)
 			goto fail;
 
-		ino = 0;
-
 repeat_in_this_group:
 		ino = ext4_find_next_zero_bit((unsigned long *)
 					      inode_bitmap_bh->b_data,
@@ -1047,8 +1062,7 @@ got:
 	}
 
 	ext4_debug("allocating inode %lu\n", inode->i_ino);
-	trace_mark(ext4_allocate_inode, "dev %s ino %lu dir %lu mode %d",
-		   sb->s_id, inode->i_ino, dir->i_ino, mode);
+	trace_ext4_allocate_inode(inode, dir, mode);
 	goto really_out;
 fail:
 	ext4_std_error(sb, err);