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Add project feature flag EXT4_FEATURE_RO_COMPAT_PROJECT 

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@ddn.com>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
debian
Li Xi 2016-02-29 22:36:13 -05:00 committed by Theodore Ts'o
parent 2d2d799c72
commit 0c18d0368a
6 changed files with 15 additions and 3 deletions
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2
lib/e2p/feature.c
View File

@ -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" },

2
lib/ext2fs/ext2_fs.h
View File

@ -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)

3
lib/ext2fs/ext2fs.h
View File

@ -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

5
misc/ext4.5.in
View File

@ -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

3
misc/mke2fs.c
View File

@ -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
};

3
misc/tune2fs.c
View File

@ -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] = {