diff options
author | Jean Noel Cordenner <jean-noel.cordenner@bull.net> | 2008-01-28 23:58:27 -0500 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2008-01-28 23:58:27 -0500 |
commit | 25ec56b518257a56d2ff41a941d288e4b5ff9488 (patch) | |
tree | 77e84d38a5ad242f9d73a006f009649f223378f1 /fs/ext4/super.c | |
parent | 7a224228ed79d587ece2304869000aad1b8e97dd (diff) |
ext4: Add inode version support in ext4
This patch adds 64-bit inode version support to ext4. The lower 32 bits
are stored in the osd1.linux1.l_i_version field while the high 32 bits
are stored in the i_version_hi field newly created in the ext4_inode.
This field is incremented in case the ext4_inode is large enough. A
i_version mount option has been added to enable the feature.
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Jean Noel Cordenner <jean-noel.cordenner@bull.net>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r-- | fs/ext4/super.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f7479d30735e..aa22acd6eb06 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c | |||
@@ -732,6 +732,8 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) | |||
732 | seq_puts(seq, ",nobh"); | 732 | seq_puts(seq, ",nobh"); |
733 | if (!test_opt(sb, EXTENTS)) | 733 | if (!test_opt(sb, EXTENTS)) |
734 | seq_puts(seq, ",noextents"); | 734 | seq_puts(seq, ",noextents"); |
735 | if (test_opt(sb, I_VERSION)) | ||
736 | seq_puts(seq, ",i_version"); | ||
735 | 737 | ||
736 | if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) | 738 | if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) |
737 | seq_puts(seq, ",data=journal"); | 739 | seq_puts(seq, ",data=journal"); |
@@ -874,7 +876,7 @@ enum { | |||
874 | Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, | 876 | Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, |
875 | Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota, | 877 | Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota, |
876 | Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota, | 878 | Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota, |
877 | Opt_grpquota, Opt_extents, Opt_noextents, | 879 | Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version, |
878 | }; | 880 | }; |
879 | 881 | ||
880 | static match_table_t tokens = { | 882 | static match_table_t tokens = { |
@@ -928,6 +930,7 @@ static match_table_t tokens = { | |||
928 | {Opt_barrier, "barrier=%u"}, | 930 | {Opt_barrier, "barrier=%u"}, |
929 | {Opt_extents, "extents"}, | 931 | {Opt_extents, "extents"}, |
930 | {Opt_noextents, "noextents"}, | 932 | {Opt_noextents, "noextents"}, |
933 | {Opt_i_version, "i_version"}, | ||
931 | {Opt_err, NULL}, | 934 | {Opt_err, NULL}, |
932 | {Opt_resize, "resize"}, | 935 | {Opt_resize, "resize"}, |
933 | }; | 936 | }; |
@@ -1273,6 +1276,10 @@ clear_qf_name: | |||
1273 | case Opt_noextents: | 1276 | case Opt_noextents: |
1274 | clear_opt (sbi->s_mount_opt, EXTENTS); | 1277 | clear_opt (sbi->s_mount_opt, EXTENTS); |
1275 | break; | 1278 | break; |
1279 | case Opt_i_version: | ||
1280 | set_opt(sbi->s_mount_opt, I_VERSION); | ||
1281 | sb->s_flags |= MS_I_VERSION; | ||
1282 | break; | ||
1276 | default: | 1283 | default: |
1277 | printk (KERN_ERR | 1284 | printk (KERN_ERR |
1278 | "EXT4-fs: Unrecognized mount option \"%s\" " | 1285 | "EXT4-fs: Unrecognized mount option \"%s\" " |
@@ -3197,7 +3204,6 @@ out: | |||
3197 | i_size_write(inode, off+len-towrite); | 3204 | i_size_write(inode, off+len-towrite); |
3198 | EXT4_I(inode)->i_disksize = inode->i_size; | 3205 | EXT4_I(inode)->i_disksize = inode->i_size; |
3199 | } | 3206 | } |
3200 | inode->i_version++; | ||
3201 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | 3207 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
3202 | ext4_mark_inode_dirty(handle, inode); | 3208 | ext4_mark_inode_dirty(handle, inode); |
3203 | mutex_unlock(&inode->i_mutex); | 3209 | mutex_unlock(&inode->i_mutex); |