diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 8938949b201e..cec829bc7291 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -131,11 +131,6 @@ ro Mount filesystem read only. Note that ext4 will
mount options "ro,noload" can be used to prevent
writes to the filesystem.
-extents (*) ext4 will use extents to address file data. The
- file system will no longer be mountable by ext3.
-
-noextents ext4 will not use extents for newly created files
-
journal_checksum Enable checksumming of the journal transactions.
This will allow the recovery code in e2fsck and the
kernel to detect corruption in the kernel. It is a
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 695b45cc34e7..db1718833f58 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -536,7 +536,6 @@ do { \
#define EXT4_MOUNT_QUOTA 0x80000 /* Some quota option set */
#define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
#define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
-#define EXT4_MOUNT_EXTENTS 0x400000 /* Extents support */
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
#define EXT4_MOUNT_I_VERSION 0x2000000 /* i_version support */
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 663197adae56..be2f426f6805 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -32,8 +32,8 @@
* 5 levels of tree + root which are stored in the inode. */
#define EXT4_SINGLEDATA_TRANS_BLOCKS(sb) \
- (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS) \
- || test_opt(sb, EXTENTS) ? 27U : 8U)
+ (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS) \
+ ? 27U : 8U)
/* Extended attribute operations touch at most two data buffers,
* two bitmap buffers, and two group summaries, in addition to the inode
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c64080e49493..240cf0daad4b 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2247,7 +2247,7 @@ void ext4_ext_init(struct super_block *sb)
* possible initialization would be here
*/
- if (test_opt(sb, EXTENTS)) {
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
printk(KERN_INFO "EXT4-fs: file extents enabled");
#ifdef AGGRESSIVE_TEST
printk(", aggressive tests");
@@ -2272,7 +2272,7 @@ void ext4_ext_init(struct super_block *sb)
*/
void ext4_ext_release(struct super_block *sb)
{
- if (!test_opt(sb, EXTENTS))
+ if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS))
return;
#ifdef EXTENTS_STATS
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 369c34c64292..4fb86a0061d0 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -917,7 +917,7 @@ got:
if (err)
goto fail_free_drop;
- if (test_opt(sb, EXTENTS)) {
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
/* set extent flag only for directory, file and normal symlink*/
if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
EXT4_I(inode)->i_flags |= EXT4_EXTENTS_FL;
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index e7cd488da4bb..734abca25e35 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -459,13 +459,13 @@ int ext4_ext_migrate(struct inode *inode)
struct list_blocks_struct lb;
unsigned long max_entries;
- if (!test_opt(inode->i_sb, EXTENTS))
- /*
- * if mounted with noextents we don't allow the migrate
- */
- return -EINVAL;
-
- if ((EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+ /*
+ * If the filesystem does not support extents, or the inode
+ * already is extent-based, error out.
+ */
+ if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
+ EXT4_FEATURE_INCOMPAT_EXTENTS) ||
+ (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
return -EINVAL;
if (S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b69d09203865..acb69c00fd42 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -829,8 +829,6 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_puts(seq, ",journal_async_commit");
if (test_opt(sb, NOBH))
seq_puts(seq, ",nobh");
- if (!test_opt(sb, EXTENTS))
- seq_puts(seq, ",noextents");
if (test_opt(sb, I_VERSION))
seq_puts(seq, ",i_version");
if (!test_opt(sb, DELALLOC))
@@ -1011,7 +1009,7 @@ enum {
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
- Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version,
+ Opt_grpquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc,
Opt_inode_readahead_blks, Opt_journal_ioprio
};
@@ -1066,8 +1064,6 @@ static const match_table_t tokens = {
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
- {Opt_extents, "extents"},
- {Opt_noextents, "noextents"},
{Opt_i_version, "i_version"},
{Opt_stripe, "stripe=%u"},
{Opt_resize, "resize"},
@@ -1115,7 +1111,6 @@ static int parse_options(char *options, struct super_block *sb,
int qtype, qfmt;
char *qname;
#endif
- ext4_fsblk_t last_block;
if (!options)
return 1;
@@ -1445,33 +1440,6 @@ set_qf_format:
case Opt_bh:
clear_opt(sbi->s_mount_opt, NOBH);
break;
- case Opt_extents:
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) {
- ext4_warning(sb, __func__,
- "extents feature not enabled "
- "on this filesystem, use tune2fs");
- return 0;
- }
- set_opt(sbi->s_mount_opt, EXTENTS);
- break;
- case Opt_noextents:
- /*
- * When e2fsprogs support resizing an already existing
- * ext3 file system to greater than 2**32 we need to
- * add support to block allocator to handle growing
- * already existing block mapped inode so that blocks
- * allocated for them fall within 2**32
- */
- last_block = ext4_blocks_count(sbi->s_es) - 1;
- if (last_block > 0xffffffffULL) {
- printk(KERN_ERR "EXT4-fs: Filesystem too "
- "large to mount with "
- "-o noextents options\n");
- return 0;
- }
- clear_opt(sbi->s_mount_opt, EXTENTS);
- break;
case Opt_i_version:
set_opt(sbi->s_mount_opt, I_VERSION);
sb->s_flags |= MS_I_VERSION;
@@ -2135,18 +2103,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_opt(sbi->s_mount_opt, RESERVATION);
set_opt(sbi->s_mount_opt, BARRIER);
- /*
- * turn on extents feature by default in ext4 filesystem
- * only if feature flag already set by mkfs or tune2fs.
- * Use -o noextents to turn it off
- */
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS))
- set_opt(sbi->s_mount_opt, EXTENTS);
- else
- ext4_warning(sb, __func__,
- "extents feature not enabled on this filesystem, "
- "use tune2fs.");
-
/*
* enable delayed allocation by default
* Use -o nodelalloc to turn it off
@@ -3825,7 +3781,7 @@ static void __exit exit_ext4_fs(void)
}
MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
-MODULE_DESCRIPTION("Fourth Extended Filesystem with extents");
+MODULE_DESCRIPTION("Fourth Extended Filesystem");
MODULE_LICENSE("GPL");
module_init(init_ext4_fs)
module_exit(exit_ext4_fs)