Subject: [RFC] [PATCH 0/3] Recursive mtime for ext3
Newsgroups: gmane.comp.file-systems.ext4, gmane.linux.kernel
Date: 2007-11-06 17:15:37 GMT (1 year, 9 weeks, 2 days and 43 minutes ago)
Hello, in following three patches is implemented recursive mtime feature for ext3. The first two patches are mostly clean-up patches, the third patch implements the feature itself. If somebody is interested in testing this (or even writing a support of this feature in rsync and similar), please contact me. Attached are sources of simple tools set_recmod, get_recmod for testing the feature and also a patch implementing basic support of the feature in e2fsprogs. Comments welcome. Honza -- Jan Kara <jack <at> suse.cz> SUSE Labs, CR
diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c
index fe7e65a..a12540b 100644
--- a/lib/e2p/feature.c
+++ b/lib/e2p/feature.c
@@ -37,6 +37,8 @@ static struct feature feature_list[] = {
"resize_inode" },
{ E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_LAZY_BG,
"lazy_bg" },
+ { E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_RTIME,
+ "recursive_mtime" },
{ E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER,
"sparse_super" },
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index a316665..21747c2 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -623,6 +623,7 @@ struct ext2_super_block {
#define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010
#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
#define EXT2_FEATURE_COMPAT_LAZY_BG 0x0040
+#define EXT2_FEATURE_COMPAT_RTIME 0x0080
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 83a9091..64b6eb6 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -418,7 +418,8 @@ typedef struct ext2_icount *ext2_icount_
EXT2_FEATURE_COMPAT_RESIZE_INODE|\
EXT2_FEATURE_COMPAT_DIR_INDEX|\
EXT2_FEATURE_COMPAT_LAZY_BG|\
- EXT2_FEATURE_COMPAT_EXT_ATTR)
+ EXT2_FEATURE_COMPAT_EXT_ATTR|\
+ EXT2_FEATURE_COMPAT_RTIME)
/* This #ifdef is temporary until compression is fully supported */
#ifdef ENABLE_COMPRESSION
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 4a6cace..5060db7 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -870,7 +870,8 @@ static __u32 ok_features[3] = {
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_RESIZE_INODE |
EXT2_FEATURE_COMPAT_DIR_INDEX |
- EXT2_FEATURE_COMPAT_LAZY_BG, /* Compat */
+ EXT2_FEATURE_COMPAT_LAZY_BG |
+ EXT2_FEATURE_COMPAT_RTIME, /* Compat */
EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
EXT2_FEATURE_INCOMPAT_META_BG,
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 833b994..5195e40 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -96,7 +96,8 @@ static void usage(void)
static __u32 ok_features[3] = {
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
- EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
+ EXT2_FEATURE_COMPAT_DIR_INDEX |
+ EXT2_FEATURE_COMPAT_RTIME, /* Compat */
EXT2_FEATURE_INCOMPAT_FILETYPE, /* Incompat */
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */
};