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authorAlex Tomas <alex@clusterfs.com>2006-10-11 01:21:03 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-11 11:14:16 -0700
commita86c61812637c7dd0c57e29880cffd477b62f2e7 (patch)
tree10737307293afde2999a887cfeac32c7d7584aa7 /fs/ext4/super.c
parentc3fcc8137ce4296ad6ab94f88bd60cbe03d21527 (diff)
[PATCH] ext3: add extent map support
On disk extents format: /* * this is extent on-disk structure * it's used at the bottom of the tree */ struct ext3_extent { __le32 ee_block; /* first logical block extent covers */ __le16 ee_len; /* number of blocks covered by extent */ __le16 ee_start_hi; /* high 16 bits of physical block */ __le32 ee_start; /* low 32 bigs of physical block */ }; Signed-off-by: Alex Tomas <alex@clusterfs.com> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f131bb69b62..69f87525050 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -390,6 +390,7 @@ static void ext4_put_super (struct super_block * sb)
struct ext4_super_block *es = sbi->s_es;
int i;
+ ext4_ext_release(sb);
ext4_xattr_put_super(sb);
jbd2_journal_destroy(sbi->s_journal);
if (!(sb->s_flags & MS_RDONLY)) {
@@ -454,6 +455,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
#endif
ei->i_block_alloc_info = NULL;
ei->vfs_inode.i_version = 1;
+ memset(&ei->i_cached_extent, 0, sizeof(struct ext4_ext_cache));
return &ei->vfs_inode;
}
@@ -677,7 +679,7 @@ 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_grpquota, Opt_extents,
};
static match_table_t tokens = {
@@ -727,6 +729,7 @@ static match_table_t tokens = {
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
+ {Opt_extents, "extents"},
{Opt_err, NULL},
{Opt_resize, "resize"},
};
@@ -1059,6 +1062,9 @@ clear_qf_name:
case Opt_bh:
clear_opt(sbi->s_mount_opt, NOBH);
break;
+ case Opt_extents:
+ set_opt (sbi->s_mount_opt, EXTENTS);
+ break;
default:
printk (KERN_ERR
"EXT4-fs: Unrecognized mount option \"%s\" "
@@ -1787,6 +1793,8 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
test_opt(sb,DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA ? "ordered":
"writeback");
+ ext4_ext_init(sb);
+
lock_kernel();
return 0;