ext4: reserve code points for the project quota feature

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2 files changed, 8 insertions, 1 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3f248c9f899f..320f10ef4a23 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -374,6 +374,7 @@ struct flex_groups {
 #define EXT4_EA_INODE_FL                0x00200000 /* Inode used for large EA */
 #define EXT4_EOFBLOCKS_FL               0x00400000 /* Blocks allocated beyond EOF */
 #define EXT4_INLINE_DATA_FL             0x10000000 /* Inode has inline data. */
+#define EXT4_PROJINHERIT_FL             0x20000000 /* Create with parents projid */
 #define EXT4_RESERVED_FL                0x80000000 /* reserved for ext4 lib */
 
 #define EXT4_FL_USER_VISIBLE            0x004BDFFF /* User visible flags */
@@ -431,6 +432,7 @@ enum {
         EXT4_INODE_EA_INODE     = 21,   /* Inode used for large EA */
         EXT4_INODE_EOFBLOCKS    = 22,   /* Blocks allocated beyond EOF */
         EXT4_INODE_INLINE_DATA  = 28,   /* Data in inode. */
+        EXT4_INODE_PROJINHERIT  = 29,   /* Create with parents projid */
         EXT4_INODE_RESERVED     = 31,   /* reserved for ext4 lib */
 };
 
@@ -475,6 +477,7 @@ static inline void ext4_check_flag_values(void)
         CHECK_FLAG_VALUE(EA_INODE);
         CHECK_FLAG_VALUE(EOFBLOCKS);
         CHECK_FLAG_VALUE(INLINE_DATA);
+        CHECK_FLAG_VALUE(PROJINHERIT);
         CHECK_FLAG_VALUE(RESERVED);
 }
 
@@ -692,6 +695,7 @@ struct ext4_inode {
         __le32  i_crtime;       /* File Creation time */
         __le32  i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
         __le32  i_version_hi;   /* high 32 bits for 64-bit version */
+        __le32  i_projid;       /* Project ID */
 };
 
 struct move_extent {
@@ -1179,7 +1183,8 @@ struct ext4_super_block {
         __u8    s_encrypt_algos[4];     /* Encryption algorithms in use  */
         __u8    s_encrypt_pw_salt[16];  /* Salt used for string2key algorithm */
         __le32  s_lpf_ino;              /* Location of the lost+found inode */
-        __le32  s_reserved[100];        /* Padding to the end of the block */
+        __le32  s_prj_quota_inum;       /* inode for tracking project quota */
+        __le32  s_reserved[99];         /* Padding to the end of the block */
         __le32  s_checksum;             /* crc32c(superblock) */
 };
 
@@ -1566,6 +1571,7 @@ static inline int ext4_encrypted_inode(struct inode *inode)
  */
 #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM    0x0400
 #define EXT4_FEATURE_RO_COMPAT_READONLY         0x1000
+#define EXT4_FEATURE_RO_COMPAT_PROJECT          0x2000
 
 #define EXT4_FEATURE_INCOMPAT_COMPRESSION       0x0001
 #define EXT4_FEATURE_INCOMPAT_FILETYPE          0x0002
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 9b964a5920af..f15d980249b5 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -197,6 +197,7 @@ struct inodes_stat_t {
 #define FS_EXTENT_FL                    0x00080000 /* Extents */
 #define FS_DIRECTIO_FL                  0x00100000 /* Use direct i/o */
 #define FS_NOCOW_FL                     0x00800000 /* Do not cow file */
+#define FS_PROJINHERIT_FL               0x20000000 /* Create with parents projid */
 #define FS_RESERVED_FL                  0x80000000 /* reserved for ext2 lib */
 
 #define FS_FL_USER_VISIBLE              0x0003DFFF /* User visible flags */