This patch add project feature flag EXT4_FEATURE_RO_COMPAT_PROJECT.
Project feature is a read-only compat feature. Thus, an ext4 file
system with project feature enabled could only be read by ext4
kernel module without project feature support.
Signed-off-by: Li Xi <lixi@xxxxxxx>
Signed-off-by: Wang Shilong <wshilong@xxxxxxx>
---
lib/e2p/feature.c | 2 ++
lib/ext2fs/ext2_fs.h | 2 ++
lib/ext2fs/ext2fs.h | 3 ++-
misc/ext4.5.in | 5 +++++
misc/mke2fs.c | 3 ++-
misc/tune2fs.c | 3 ++-
6 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c
index 737b0b9..17d2ad0 100644
--- a/lib/e2p/feature.c
+++ b/lib/e2p/feature.c
@@ -70,6 +70,8 @@ static struct feature feature_list[] = {
"replica" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_READONLY,
"read-only" },
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_PROJECT,
+ "project"},
{ E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_COMPRESSION,
"compression" },
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index 1f62c58..4221a6a 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -791,6 +791,7 @@ struct ext2_super_block {
#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
#define EXT4_FEATURE_RO_COMPAT_REPLICA 0x0800
#define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000
+#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000 /* Project quota */
#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
@@ -882,6 +883,7 @@ EXT4_FEATURE_RO_COMPAT_FUNCS(bigalloc, 4, BIGALLOC)
EXT4_FEATURE_RO_COMPAT_FUNCS(metadata_csum, 4, METADATA_CSUM)
EXT4_FEATURE_RO_COMPAT_FUNCS(replica, 4, REPLICA)
EXT4_FEATURE_RO_COMPAT_FUNCS(readonly, 4, READONLY)
+EXT4_FEATURE_RO_COMPAT_FUNCS(project, 4, PROJECT)
EXT4_FEATURE_INCOMPAT_FUNCS(compression, 2, COMPRESSION)
EXT4_FEATURE_INCOMPAT_FUNCS(filetype, 2, FILETYPE)
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 30e913c..f6fed2c 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -591,7 +591,8 @@ typedef struct ext2_icount *ext2_icount_t;
EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
EXT4_FEATURE_RO_COMPAT_QUOTA|\
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
- EXT4_FEATURE_RO_COMPAT_READONLY)
+ EXT4_FEATURE_RO_COMPAT_READONLY |\
+ EXT4_FEATURE_RO_COMPAT_PROJECT)
/*
* These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
diff --git a/misc/ext4.5.in b/misc/ext4.5.in
index dbd6dde..e892743 100644
--- a/misc/ext4.5.in
+++ b/misc/ext4.5.in
@@ -214,6 +214,11 @@ Causes the quota files (i.e., user.quota and
group.quota which existed
in the older quota design) to be hidden inodes.
.TP
+.B project
+.br
+This ext4 feature provides project quota support. With this feature,
+the project ID of inode will be managed when the filesystem is mounted.
+.TP
.B resize_inode
.br
This file system feature indicates that space has been reserved so
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index d34f625..48f15a5 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1096,7 +1096,8 @@ static __u32 ok_features[3] = {
EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
EXT4_FEATURE_RO_COMPAT_BIGALLOC|
EXT4_FEATURE_RO_COMPAT_QUOTA|
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|
+ EXT4_FEATURE_RO_COMPAT_PROJECT
};
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 1e05428..4aff3fd 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -159,7 +159,8 @@ static __u32 ok_features[3] = {
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
EXT4_FEATURE_RO_COMPAT_QUOTA |
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
- EXT4_FEATURE_RO_COMPAT_READONLY
+ EXT4_FEATURE_RO_COMPAT_READONLY |
+ EXT4_FEATURE_RO_COMPAT_PROJECT
};
static __u32 clear_ok_features[3] = {
--
1.7.1
--
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