[PATCH 1/2 e2fsprogs] support for large EAs

[Kalpak Shah <Kalpak.Shah@Sun.COM>]

[-- Attachment #1: Type: text/plain, Size: 1234 bytes --]

Hi,

This patch adds large EA support for e2fsprogs.

- add EXT4_FEATURE_INCOMPAT_EA_INODE feature
- inode_ea_map bitmap is added for tracking non-orphan EA inodes. Orphan EA inodes get linked to lost+found.
- xattr handling is needed for deleting corrupt EA entries

Ted, this patch is actually based on top of the e2fsprogs-expand-extra-isize.patch I had sent about a month back. If you are satisfied with the approach, I can send a patch series which applies to the tip of the e2fsprogs tree.

Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Kalpak Shah <kalpak.shah@sun.com>

 e2fsck/e2fsck.h            |    1 
 e2fsck/pass1.c             |  199 ++++++++++++++++++++++++++++++++++++---------
 e2fsck/pass4.c             |   17 +++
 e2fsck/problem.c           |   24 +++++
 e2fsck/problem.h           |   13 ++
 lib/blkid/probe.h          |    1 
 lib/e2p/feature.c          |    2 
 lib/ext2fs/ext2_ext_attr.h |    5 -
 lib/ext2fs/ext2_fs.h       |    5 -
 lib/ext2fs/ext2fs.h        |    6 -
 lib/ext2fs/ext_attr.c      |   27 ++++--
 lib/ext2fs/swapfs.c        |    2 
 misc/mke2fs.c              |    3 
 misc/tune2fs.c             |    6 +
 14 files changed, 259 insertions(+), 52 deletions(-)

Thanks,
Kalpak

[-- Attachment #2: e2fsprogs-large-xattrs.patch --]
[-- Type: text/x-patch, Size: 22355 bytes --]

Index: e2fsprogs-1.41.1/lib/blkid/probe.h
===================================================================
--- e2fsprogs-1.41.1.orig/lib/blkid/probe.h
+++ e2fsprogs-1.41.1/lib/blkid/probe.h
@@ -119,6 +119,7 @@ struct ext2_super_block {
 #define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
 #define EXT4_FEATURE_INCOMPAT_MMP		0x0100
 #define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
+#define EXT4_FEATURE_INCOMPAT_EA_INODE		0x0400
 
 #define EXT2_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
 					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
Index: e2fsprogs-1.41.1/lib/e2p/feature.c
===================================================================
--- e2fsprogs-1.41.1.orig/lib/e2p/feature.c
+++ e2fsprogs-1.41.1/lib/e2p/feature.c
@@ -75,6 +75,8 @@ static struct feature feature_list[] = {
 			"flex_bg"},
 	{       E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP,
 			"mmp" },
+	{	E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_EA_INODE,
+			"large_xattr" },
 	{	0, 0, 0 },
 };
 
Index: e2fsprogs-1.41.1/lib/ext2fs/ext2_fs.h
===================================================================
--- e2fsprogs-1.41.1.orig/lib/ext2fs/ext2_fs.h
+++ e2fsprogs-1.41.1/lib/ext2fs/ext2_fs.h
@@ -273,6 +273,7 @@ struct ext2_dx_countlimit {
 #define EXT2_TOPDIR_FL			0x00020000 /* Top of directory hierarchies*/
 #define EXT4_HUGE_FILE_FL               0x00040000 /* Set to each huge file */
 #define EXT4_EXTENTS_FL 		0x00080000 /* Inode uses extents */
+#define EXT4_EA_INODE_FL		0x00200000 /* Inode used for large EA */
 #define EXT2_RESERVED_FL		0x80000000 /* reserved for ext2 lib */
 
 #define EXT2_FL_USER_VISIBLE		0x000BDFFF /* User visible flags */
@@ -649,11 +650,13 @@ struct ext2_super_block {
 #define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
 #define EXT4_FEATURE_INCOMPAT_MMP		0x0100
 #define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
+#define EXT4_FEATURE_INCOMPAT_EA_INODE		0x0400
 
 
 #define EXT2_FEATURE_COMPAT_SUPP	0
 #define EXT2_FEATURE_INCOMPAT_SUPP    (EXT2_FEATURE_INCOMPAT_FILETYPE| \
-				       EXT4_FEATURE_INCOMPAT_MMP)
+				       EXT4_FEATURE_INCOMPAT_MMP| \
+				       EXT4_FEATURE_INCOMPAT_EA_INODE)
 #define EXT2_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
 					 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
 					 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| \
Index: e2fsprogs-1.41.1/misc/mke2fs.c
===================================================================
--- e2fsprogs-1.41.1.orig/misc/mke2fs.c
+++ e2fsprogs-1.41.1/misc/mke2fs.c
@@ -841,7 +841,8 @@ static __u32 ok_features[3] = {
 		EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 		EXT2_FEATURE_INCOMPAT_META_BG|
 		EXT4_FEATURE_INCOMPAT_FLEX_BG|
-		EXT4_FEATURE_INCOMPAT_MMP,
+		EXT4_FEATURE_INCOMPAT_MMP|
+		EXT4_FEATURE_INCOMPAT_EA_INODE,
 	/* R/O compat */
 	EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
 		EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
Index: e2fsprogs-1.41.1/misc/tune2fs.c
===================================================================
--- e2fsprogs-1.41.1.orig/misc/tune2fs.c
+++ e2fsprogs-1.41.1/misc/tune2fs.c
@@ -122,7 +122,8 @@ static __u32 ok_features[3] = {
 	EXT2_FEATURE_INCOMPAT_FILETYPE |
 		EXT3_FEATURE_INCOMPAT_EXTENTS |
 		EXT4_FEATURE_INCOMPAT_FLEX_BG |
-		EXT4_FEATURE_INCOMPAT_MMP,
+		EXT4_FEATURE_INCOMPAT_MMP |
+		EXT4_FEATURE_INCOMPAT_EA_INODE,
 	/* R/O compat */
 	EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 		EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
@@ -477,6 +478,9 @@ mmp_error:
 			ext2fs_free_mem(&buf);
 	}
 
+	if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_EA_INODE))
+		sb->s_feature_incompat |= EXT4_FEATURE_INCOMPAT_EA_INODE;
+
 	if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 		/*
 		 * If adding a journal flag, let the create journal
Index: e2fsprogs-1.41.1/e2fsck/pass1.c
===================================================================
--- e2fsprogs-1.41.1.orig/e2fsck/pass1.c
+++ e2fsprogs-1.41.1/e2fsck/pass1.c
@@ -28,6 +28,7 @@
  * 	- A bitmap of which blocks are in use.		(block_found_map)
  * 	- A bitmap of which blocks are in use by two inodes	(block_dup_map)
  * 	- The data blocks of the directory inodes.	(dir_map)
+ *	- A bitmap of EA inodes.			(inode_ea_map)
  *
  * Pass 1 is designed to stash away enough information so that the
  * other passes should not need to read in the inode information
@@ -269,6 +270,125 @@ static void check_size(e2fsck_t ctx, str
 	e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 }
 
+extern char *ext2_attr_index_prefix[];
+
+static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
+{
+	e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+	if (ctx->block_found_map) {
+		if (inuse > 0)
+			ext2fs_mark_block_bitmap(ctx->block_found_map,
+						 (blk_t) blk);
+		else
+			ext2fs_unmark_block_bitmap(ctx->block_found_map,
+						   (blk_t) blk);
+	}
+}
+
+static void mark_inode_ea_map(e2fsck_t ctx, struct problem_context *pctx,
+			      ext2_ino_t ino)
+{
+	if (!ctx->inode_ea_map) {
+		pctx->errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
+					 _("EA inode map"),
+					 &ctx->inode_ea_map);
+		if (pctx->errcode) {
+			fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR,
+				    pctx);
+			exit(1);
+		}
+	}
+
+	ext2fs_mark_inode_bitmap(ctx->inode_ea_map, ino);
+}
+
+/*
+ * Delete an EA entry. If this is the last entry to be deleted, then i_file_acl
+ * must have been freed, so we must update e2fsck block statistics and set
+ * i_file_acl_deleted.
+ * When we delete the entry successfully, this function returns 0, else
+ * non-zero value.
+ */
+static int e2fsck_ea_entry_delete(e2fsck_t ctx, struct ext2_ext_attr_entry *entry,
+				  struct problem_context *pctx,
+				  int *i_file_acl_deleted, problem_t prob)
+{
+	blk_t i_file_acl = pctx->inode->i_file_acl;
+	int err = 1;
+
+	pctx->num = entry->e_value_inum;
+
+	if (fix_problem(ctx, prob, pctx)) {
+		/* Delete corrupt EA entry */
+		err = ext2fs_attr_set(ctx->fs, pctx->ino, pctx->inode,
+				      entry->e_name_index, entry->e_name,
+				      0, 0, 0);
+		if (err == 0) {
+			if (i_file_acl && pctx->inode->i_file_acl == 0) {
+				e2fsck_block_alloc_stats(ctx->fs, i_file_acl, -1);
+				*i_file_acl_deleted = 1;
+			}
+			return 0;
+		}
+	}
+
+	return err;
+}
+
+/*
+ * Check validity of EA inode. Return 0 if EA inode is valid, nonzero otherwise.
+ */
+static int check_large_ea_inode(e2fsck_t ctx, struct ext2_ext_attr_entry *entry,
+				struct problem_context *pctx,
+				int *i_file_acl_deleted)
+{
+	struct ext2_inode inode;
+	int ret;
+
+	/* Check if inode is within valid range */
+	if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
+	    (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
+		ret = e2fsck_ea_entry_delete(ctx, entry, pctx,
+					     i_file_acl_deleted,
+					     PR_1_ATTR_VALUE_EA_INODE);
+		/* If user refuses to delete this entry, caller may try to set
+		 * the bit for this out-of-bound inode in inode_ea_map, so
+		 * always return failure */
+		return 1;
+	}
+
+	e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
+	if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
+		/* If EXT4_EA_INODE_FL flag is not present but back-pointer
+		 * matches then we should set this flag */
+		if (inode.i_mtime == pctx->ino &&
+		    inode.i_generation == pctx->inode->i_generation &&
+		    fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
+			inode.i_flags |= EXT4_EA_INODE_FL;
+			ext2fs_write_inode(ctx->fs, entry->e_value_inum, &inode);
+
+			return 0;
+		}
+
+		ret = e2fsck_ea_entry_delete(ctx, entry, pctx,
+					     i_file_acl_deleted,
+					     PR_1_ATTR_NO_EA_INODE_FL);
+		return ret;
+	}
+
+	/* Validate the inode back-pointer */
+	if (inode.i_mtime != pctx->ino ||
+	    inode.i_generation != pctx->inode->i_generation) {
+		ret = e2fsck_ea_entry_delete(ctx, entry, pctx,
+					     i_file_acl_deleted,
+					     PR_1_ATTR_INVAL_EA_INODE);
+		return ret;
+	}
+
+	return 0;
+}
+
 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
 {
 	struct ext2_super_block *sb = ctx->fs->super;
@@ -307,18 +427,25 @@ static void check_ea_in_inode(e2fsck_t c
 		/* attribute len eats this space */
 		remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 
-		/* check value size */
-		if (entry->e_value_size == 0 || entry->e_value_size > remain) {
+		if (entry->e_value_size == 0) {
 			pctx->num = entry->e_value_size;
 			problem = PR_1_ATTR_VALUE_SIZE;
 			goto fix;
 		}
 
-		/* e_value_block must be 0 in inode's ea */
-		if (entry->e_value_block != 0) {
-			pctx->num = entry->e_value_block;
-			problem = PR_1_ATTR_VALUE_BLOCK;
-			goto fix;
+		if (entry->e_value_inum == 0) {
+			/* check value size */
+			if (entry->e_value_size > remain) {
+				pctx->num = entry->e_value_size;
+				problem = PR_1_ATTR_VALUE_SIZE;
+				goto fix;
+			}
+		} else {
+			int ret, tmp;
+
+			ret = check_large_ea_inode(ctx, entry, pctx, &tmp);
+			if (ret == 0)
+				mark_inode_ea_map(ctx, pctx, entry->e_value_inum);
 		}
 
 		hash = ext2fs_ext_attr_hash_entry(entry,
@@ -331,7 +458,10 @@ static void check_ea_in_inode(e2fsck_t c
 			goto fix;
 		}
 
-		remain -= entry->e_value_size;
+		/* If EA value is stored in external inode then it does not
+		 * consume space here */
+		if (entry->e_value_inum == 0)
+			remain -= entry->e_value_size;
 
 		entry = EXT2_EXT_ATTR_NEXT(entry);
 	}
@@ -510,8 +640,6 @@ extern void e2fsck_setup_tdb_icount(e2fs
 		*ret = 0;
 }
 
-extern char *ext2_attr_index_prefix[];
-
 int e2fsck_pass1_delete_attr(e2fsck_t ctx, struct ext2_inode_large *inode,
 			     struct problem_context *pctx, int needed_size)
 {
@@ -568,7 +696,7 @@ int e2fsck_pass1_delete_attr(e2fsck_t ct
 		if (EXT2_EXT_IS_LAST_ENTRY(entry)) {
 			if (in_inode) {
 				entry = entry_blk;
-			        len = sizeof(entry->e_name);
+				len = sizeof(entry->e_name);
 				entry_size = ext2fs_attr_get_next_attr(entry,
 							index, name, len, 1);
 				in_inode = 0;
@@ -1609,6 +1737,7 @@ static int check_ext_attr(e2fsck_t ctx, 
 	struct ext2_ext_attr_entry *entry;
 	int		count;
 	region_t	region = 0;
+	int ret;
 
 	blk = inode->i_file_acl;
 	if (blk == 0)
@@ -1730,19 +1859,27 @@ static int check_ext_attr(e2fsck_t ctx, 
 				goto clear_extattr;
 			break;
 		}
-		if (entry->e_value_block != 0) {
-			if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
-				goto clear_extattr;
-		}
-		if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
-			if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
-				goto clear_extattr;
-			break;
-		}
-		if (entry->e_value_size &&
-		    region_allocate(region, entry->e_value_offs,
-				    EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
-			if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
+		if (entry->e_value_inum == 0) {
+			if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
+				if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
+					goto clear_extattr;
+				break;
+			}
+			if (entry->e_value_size &&
+			    region_allocate(region, entry->e_value_offs,
+					    EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
+				if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
+					goto clear_extattr;
+			}
+		} else {
+			int i_file_acl_deleted = 0;
+
+			ret = check_large_ea_inode(ctx, entry, pctx,
+						   &i_file_acl_deleted);
+			if (ret == 0)
+				mark_inode_ea_map(ctx, pctx, entry->e_value_inum);
+
+			if (i_file_acl_deleted)
 				goto clear_extattr;
 		}
 
@@ -2883,20 +3020,6 @@ static errcode_t e2fsck_get_alloc_block(
 	return (0);
 }
 
-static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
-{
-	e2fsck_t ctx = (e2fsck_t) fs->priv_data;
-
-	if (ctx->block_found_map) {
-		if (inuse > 0)
-			ext2fs_mark_block_bitmap(ctx->block_found_map,
-						 (blk_t) blk);
-		else
-			ext2fs_unmark_block_bitmap(ctx->block_found_map,
-						   (blk_t) blk);
-	}
-}
-
 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool)
 {
 	ext2_filsys fs = ctx->fs;
Index: e2fsprogs-1.41.1/e2fsck/problem.c
===================================================================
--- e2fsprogs-1.41.1.orig/e2fsck/problem.c
+++ e2fsprogs-1.41.1/e2fsck/problem.c
@@ -928,6 +928,30 @@ static struct e2fsck_problem problem_tab
 	     "without deletion of an EA.\n"),
 	  PROMPT_FIX, 0 },
 
+	/* Inode has illegal EA value inode */
+	{ PR_1_ATTR_VALUE_EA_INODE,
+	  N_("@i %i has @I EA @i %N.\n"),
+	  PROMPT_FIX, PR_PREEN_OK },
+
+	/* Invalid back-pointer from EA-inode to parent inode */
+	{ PR_1_ATTR_INVAL_EA_INODE,
+	  N_("@I backpointer from EA @i %N to parent @i %i. "
+	     "Delete EA inode?\n"),
+	  PROMPT_FIX, PR_PREEN_OK },
+
+	/* Parent inode has invalid EA entry. EA inode does not have
+	 * EXT4_EA_INODE_FL flag */
+	{ PR_1_ATTR_NO_EA_INODE_FL,
+	  N_("Parent @i %i has @I EA entry. EA @i %N does not have "
+	     "EXT4_EA_INODE_FL flag. Delete EA entry?\n"),
+	  PROMPT_FIX, PR_PREEN_OK },
+
+	/* EA inode for parent inode does not have EXT4_EA_INODE_FL flag */
+	{ PR_1_ATTR_SET_EA_INODE_FL,
+	  N_("EA @i %N for parent @i %i does not have EXT4_EA_INODE_FL flag. "
+	     "Set the flag?\n"),
+	  PROMPT_FIX, PR_PREEN_OK },
+
 
 	/* Pass 1b errors */
 
Index: e2fsprogs-1.41.1/e2fsck/problem.h
===================================================================
--- e2fsprogs-1.41.1.orig/e2fsck/problem.h
+++ e2fsprogs-1.41.1/e2fsck/problem.h
@@ -548,6 +548,19 @@ struct problem_context {
  */
 #define PR_1_CLEAR_EXTRA_ISIZE		0x01006C
 
+/* Inode has illegal EA value inode */
+#define PR_1_ATTR_VALUE_EA_INODE	0x01006D
+
+/* Invalid back-pointer from EA-inode to parent inode */
+#define PR_1_ATTR_INVAL_EA_INODE	0x01006E
+
+/* Parent inode has invalid EA entry. EA inode does not have
+ * EXT4_EA_INODE_FL flag */
+#define PR_1_ATTR_NO_EA_INODE_FL	0x01006F
+
+/* EA inode for parent inode does not have EXT4_EA_INODE_FL flag */
+#define PR_1_ATTR_SET_EA_INODE_FL	0x010070
+
 /*
  * Pass 1b errors
  */
Index: e2fsprogs-1.41.1/lib/ext2fs/ext2_ext_attr.h
===================================================================
--- e2fsprogs-1.41.1.orig/lib/ext2fs/ext2_ext_attr.h
+++ e2fsprogs-1.41.1/lib/ext2fs/ext2_ext_attr.h
@@ -30,7 +30,7 @@ struct ext2_ext_attr_entry {
 	__u8	e_name_len;	/* length of name */
 	__u8	e_name_index;	/* attribute name index */
 	__u16	e_value_offs;	/* offset in disk block of value */
-	__u32	e_value_block;	/* disk block attribute is stored on (n/i) */
+	__u32	e_value_inum;	/* inode in which the value is stored */
 	__u32	e_value_size;	/* size of attribute value */
 	__u32	e_hash;		/* hash value of name and value */
 #if 1
@@ -38,6 +38,9 @@ struct ext2_ext_attr_entry {
 #endif
 };
 
+#define	EXT4_XATTR_MIN_LARGE_EA_SIZE(b) ((b) >> 1)
+#define	EXT4_XATTR_MAX_LARGE_EA_SIZE	(1024 * 1024)
+
 #define BHDR(block) ((struct ext2_ext_attr_header *) block)
 #define IHDR(inode)			   	\
 	((__u32 *) ((char *)inode +	     	\
Index: e2fsprogs-1.41.1/lib/ext2fs/ext_attr.c
===================================================================
--- e2fsprogs-1.41.1.orig/lib/ext2fs/ext_attr.c
+++ e2fsprogs-1.41.1/lib/ext2fs/ext_attr.c
@@ -45,7 +45,7 @@ __u32 ext2fs_ext_attr_hash_entry(struct 
 	}
 
 	/* The hash needs to be calculated on the data in little-endian. */
-	if (entry->e_value_block == 0 && entry->e_value_size != 0) {
+	if (entry->e_value_inum == 0 && entry->e_value_size != 0) {
 		__u32 *value = (__u32 *)data;
 		for (n = (entry->e_value_size + EXT2_EXT_ATTR_ROUND) >>
 			 EXT2_EXT_ATTR_PAD_BITS; n; n--) {
@@ -190,6 +190,7 @@ struct ext2_attr_ibody_find {
 };
 
 struct ext2_attr_block_find {
+	ext2_ino_t ino;
 	struct ext2_attr_search s;
 	char *block;
 };
@@ -202,7 +203,7 @@ void ext2fs_attr_shift_entries(struct ex
 
 	/* Adjust the value offsets of the entries */
 	for (; !EXT2_EXT_IS_LAST_ENTRY(last); last = EXT2_EXT_ATTR_NEXT(last)) {
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_inum == 0 && last->e_value_size) {
 			last->e_value_offs = last->e_value_offs +
 							value_offs_shift;
 		}
@@ -221,7 +222,7 @@ int ext2fs_attr_free_space(struct ext2_e
 {
 	for (; !EXT2_EXT_IS_LAST_ENTRY(last); last = EXT2_EXT_ATTR_NEXT(last)) {
 		*total += EXT2_EXT_ATTR_LEN(last->e_name_len);
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_inum == 0 && last->e_value_size) {
 			int offs = last->e_value_offs;
 			if (offs < *min_offs)
 				*min_offs = offs;
@@ -360,7 +361,7 @@ static errcode_t ext2fs_attr_set_entry(e
 	/* Compute min_offs and last. */
 	for (last = s->first; !EXT2_EXT_IS_LAST_ENTRY(last);
 	     last = EXT2_EXT_ATTR_NEXT(last)) {
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_inum == 0 && last->e_value_size) {
 			int offs = last->e_value_offs;
 
 			if (offs < min_offs)
@@ -370,7 +371,7 @@ static errcode_t ext2fs_attr_set_entry(e
 	free = min_offs - ((char *)last - s->base) - sizeof(__u32);
 
 	if (!s->not_found) {
-		if (!s->here->e_value_block && s->here->e_value_size) {
+		if (s->here->e_value_inum == 0 && s->here->e_value_size) {
 			int size = s->here->e_value_size;
 			free += EXT2_EXT_ATTR_SIZE(size);
 		}
@@ -393,7 +394,7 @@ static errcode_t ext2fs_attr_set_entry(e
 		s->here->e_name_len = name_len;
 		memcpy(s->here->e_name, i->name, name_len);
 	} else {
-		if (!s->here->e_value_block && s->here->e_value_size) {
+		if (s->here->e_value_inum == 0 && s->here->e_value_size) {
 			char *first_val = s->base + min_offs;
 			int offs = s->here->e_value_offs;
 			char *val = s->base + offs;
@@ -422,7 +423,7 @@ static errcode_t ext2fs_attr_set_entry(e
 			while (!EXT2_EXT_IS_LAST_ENTRY(last)) {
 				int o = last->e_value_offs;
 
-				if (!last->e_value_block &&
+				if (last->e_value_inum == 0 &&
 				    last->e_value_size && o < offs)
 					last->e_value_offs = o + size;
 				last = EXT2_EXT_ATTR_NEXT(last);
@@ -540,9 +541,20 @@ static errcode_t ext2fs_attr_block_set(e
 	/* Update the i_blocks if we added a new EA block */
 	if (!inode->i_file_acl && new_buf)
 		inode->i_blocks += fs->blocksize / 512;
+
+	/* Drop the previous xattr block. */
+	if (!new_buf) {
+		if (!fs->block_map)
+			ext2fs_read_block_bitmap(fs);
+		ext2fs_block_alloc_stats(fs, inode->i_file_acl, -1);
+		inode->i_blocks -= fs->blocksize / 512;
+	}
+
 	/* Update the inode. */
 	inode->i_file_acl = new_buf ? blk : 0;
 
+	ext2fs_write_inode(fs, bs->ino, inode);
+
 cleanup:
 	if (clear_flag)
 		ext2fs_free_mem(&s->base);
@@ -829,6 +841,7 @@ errcode_t ext2fs_expand_extra_isize(ext2
 		.s = { .not_found = EXT2_ET_EA_NO_SPACE, },
 	};
 	struct ext2_attr_block_find bs = {
+		.ino = ino,
 		.s = { .not_found = EXT2_ET_EA_NO_SPACE, },
 	};
 	char *start, *end, *block_buf = NULL, *buffer =NULL, *b_entry_name=NULL;
Index: e2fsprogs-1.41.1/lib/ext2fs/swapfs.c
===================================================================
--- e2fsprogs-1.41.1.orig/lib/ext2fs/swapfs.c
+++ e2fsprogs-1.41.1/lib/ext2fs/swapfs.c
@@ -110,7 +110,7 @@ void ext2fs_swap_ext_attr_entry(struct e
 				struct ext2_ext_attr_entry *from_entry)
 {
 	to_entry->e_value_offs  = ext2fs_swab16(from_entry->e_value_offs);
-	to_entry->e_value_block = ext2fs_swab32(from_entry->e_value_block);
+	to_entry->e_value_inum  = ext2fs_swab32(from_entry->e_value_inum);
 	to_entry->e_value_size  = ext2fs_swab32(from_entry->e_value_size);
 	to_entry->e_hash	= ext2fs_swab32(from_entry->e_hash);
 }
Index: e2fsprogs-1.41.1/e2fsck/pass4.c
===================================================================
--- e2fsprogs-1.41.1.orig/e2fsck/pass4.c
+++ e2fsprogs-1.41.1/e2fsck/pass4.c
@@ -11,6 +11,7 @@
  * Pass 4 frees the following data structures:
  * 	- A bitmap of which inodes are in bad blocks.	(inode_bb_map)
  * 	- A bitmap of which inodes are imagic inodes.	(inode_imagic_map)
+ *	- A bitmap of EA inodes.			(inode_ea_map)
  */
 
 #include "e2fsck.h"
@@ -39,6 +40,20 @@ static int disconnect_inode(e2fsck_t ctx
 	} else {
 		e2fsck_read_inode(ctx, i, inode, "pass4: disconnect_inode");
 	}
+
+	if (inode->i_flags & EXT4_EA_INODE_FL) {
+		if (ext2fs_test_inode_bitmap(ctx->inode_ea_map, i)) {
+			ext2fs_icount_store(ctx->inode_count, i, 1);
+			return 0;
+		} else {
+			/* Zero the link count so that when inode is linked to
+			 * lost+found it has correct link count */
+			inode->i_links_count = 0;
+			e2fsck_write_inode(ctx, i, inode, "disconnect_inode");
+			ext2fs_icount_store(ctx->inode_link_info, i, 0);
+		}
+	}
+
 	clear_problem_context(&pctx);
 	pctx.ino = i;
 	pctx.inode = inode;
@@ -182,6 +197,8 @@ void e2fsck_pass4(e2fsck_t ctx)
 	ext2fs_free_icount(ctx->inode_link_info); ctx->inode_link_info = 0;
 	ext2fs_free_icount(ctx->inode_count); ctx->inode_count = 0;
 	ext2fs_free_icount(ctx->inode_badness); ctx->inode_badness = 0;
+	ext2fs_free_inode_bitmap(ctx->inode_ea_map);
+	ctx->inode_ea_map = 0;
 	ext2fs_free_inode_bitmap(ctx->inode_bb_map);
 	ctx->inode_bb_map = 0;
 	ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
Index: e2fsprogs-1.41.1/lib/ext2fs/ext2fs.h
===================================================================
--- e2fsprogs-1.41.1.orig/lib/ext2fs/ext2fs.h
+++ e2fsprogs-1.41.1/lib/ext2fs/ext2fs.h
@@ -550,7 +550,8 @@ typedef struct ext2_icount *ext2_icount_
 					 EXT3_FEATURE_INCOMPAT_RECOVER|\
 					 EXT3_FEATURE_INCOMPAT_EXTENTS|\
 					 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
-					 EXT4_FEATURE_INCOMPAT_MMP)
+					 EXT4_FEATURE_INCOMPAT_MMP|\
+					 EXT4_FEATURE_INCOMPAT_EA_INODE)
 #else
 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP	(EXT2_FEATURE_INCOMPAT_FILETYPE|\
 					 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
@@ -558,7 +559,8 @@ typedef struct ext2_icount *ext2_icount_
 					 EXT3_FEATURE_INCOMPAT_RECOVER|\
 					 EXT3_FEATURE_INCOMPAT_EXTENTS|\
 					 EXT4_FEATURE_INCOMPAT_FLEX_BG|\
-					 EXT4_FEATURE_INCOMPAT_MMP)
+					 EXT4_FEATURE_INCOMPAT_MMP|\
+					 EXT4_FEATURE_INCOMPAT_EA_INODE)
 #endif
 #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP	(EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
 					 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
Index: e2fsprogs-1.41.1/e2fsck/e2fsck.h
===================================================================
--- e2fsprogs-1.41.1.orig/e2fsck/e2fsck.h
+++ e2fsprogs-1.41.1/e2fsck/e2fsck.h
@@ -251,6 +251,7 @@ struct e2fsck_struct {
 	ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
 	ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
 	ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
+	ext2fs_inode_bitmap inode_ea_map; /* EA inodes which are non-orphan */
 
 	ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
 	ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */