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Date: Mon, 12 Dec 2011 09:59:49 +0800
From: Tao Ma <tm@....ma>
To: linux-ext4@...r.kernel.org
Cc: "Theodore Ts'o" <tytso@....edu>
Subject: [PATCH] ext4: Unify inode flags bit and inode flags.
From: Tao Ma <boyu.mt@...bao.com>
In order to make atomic set/get of inode flags, we create a enum of
different inode flags. Now when we add a new inode flag(e.g inline data),
we have to add both the 'enum' and the 'define' and calculate the value
of 'define' by ourselves. This is a bit boring and error-prune.
So this patch just unify these 2 fields.
Cc: "Theodore Ts'o" <tytso@....edu>
Signed-off-by: Tao Ma <boyu.mt@...bao.com>
---
fs/ext4/ext4.h | 108 ++++++++++++++++++++++++++++----------------------------
1 files changed, 54 insertions(+), 54 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 5b0e26a..c5a8a8d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -345,33 +345,64 @@ struct flex_groups {
#define EXT4_N_BLOCKS (EXT4_TIND_BLOCK + 1)
/*
+ * Inode flags used for atomic set/get
+ */
+enum {
+ EXT4_INODE_SECRM = 0, /* Secure deletion */
+ EXT4_INODE_UNRM = 1, /* Undelete */
+ EXT4_INODE_COMPR = 2, /* Compress file */
+ EXT4_INODE_SYNC = 3, /* Synchronous updates */
+ EXT4_INODE_IMMUTABLE = 4, /* Immutable file */
+ EXT4_INODE_APPEND = 5, /* writes to file may only append */
+ EXT4_INODE_NODUMP = 6, /* do not dump file */
+ EXT4_INODE_NOATIME = 7, /* do not update atime */
+/* Reserved for compression usage... */
+ EXT4_INODE_DIRTY = 8,
+ EXT4_INODE_COMPRBLK = 9, /* One or more compressed clusters */
+ EXT4_INODE_NOCOMPR = 10, /* Don't compress */
+ EXT4_INODE_ECOMPR = 11, /* Compression error */
+/* End compression flags --- maybe not all used */
+ EXT4_INODE_INDEX = 12, /* hash-indexed directory */
+ EXT4_INODE_IMAGIC = 13, /* AFS directory */
+ EXT4_INODE_JOURNAL_DATA = 14, /* file data should be journaled */
+ EXT4_INODE_NOTAIL = 15, /* file tail should not be merged */
+ EXT4_INODE_DIRSYNC = 16, /* dirsync behaviour (directories only) */
+ EXT4_INODE_TOPDIR = 17, /* Top of directory hierarchies*/
+ EXT4_INODE_HUGE_FILE = 18, /* Set to each huge file */
+ EXT4_INODE_EXTENTS = 19, /* Inode uses extents */
+ EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
+ EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
+ EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
+};
+
+/*
* Inode flags
*/
-#define EXT4_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT4_UNRM_FL 0x00000002 /* Undelete */
-#define EXT4_COMPR_FL 0x00000004 /* Compress file */
-#define EXT4_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT4_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT4_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT4_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT4_NOATIME_FL 0x00000080 /* do not update atime */
+#define EXT4_SECRM_FL (1 << EXT4_INODE_SECRM)
+#define EXT4_UNRM_FL (1 << EXT4_INODE_UNRM)
+#define EXT4_COMPR_FL (1 << EXT4_INODE_COMPR)
+#define EXT4_SYNC_FL (1 << EXT4_INODE_SYNC)
+#define EXT4_IMMUTABLE_FL (1 << EXT4_INODE_IMMUTABLE)
+#define EXT4_APPEND_FL (1 << EXT4_INODE_APPEND)
+#define EXT4_NODUMP_FL (1 << EXT4_INODE_NODUMP)
+#define EXT4_NOATIME_FL (1 << EXT4_INODE_NOATIME)
/* Reserved for compression usage... */
-#define EXT4_DIRTY_FL 0x00000100
-#define EXT4_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT4_NOCOMPR_FL 0x00000400 /* Don't compress */
-#define EXT4_ECOMPR_FL 0x00000800 /* Compression error */
+#define EXT4_DIRTY_FL (1 << EXT4_INODE_DIRTY)
+#define EXT4_COMPRBLK_FL (1 << EXT4_INODE_COMPRBLK)
+#define EXT4_NOCOMPR_FL (1 << EXT4_INODE_NOCOMPR)
+#define EXT4_ECOMPR_FL (1 << EXT4_INODE_ECOMPR)
/* End compression flags --- maybe not all used */
-#define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT4_IMAGIC_FL 0x00002000 /* AFS directory */
-#define EXT4_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
-#define EXT4_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT4_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
-#define EXT4_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT4_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
-#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
-#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
-#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
+#define EXT4_INDEX_FL (1 << EXT4_INODE_INDEX)
+#define EXT4_IMAGIC_FL (1 << EXT4_INODE_IMAGIC)
+#define EXT4_JOURNAL_DATA_FL (1 << EXT4_INODE_JOURNAL_DATA)
+#define EXT4_NOTAIL_FL (1 << EXT4_INODE_NOTAIL)
+#define EXT4_DIRSYNC_FL (1 << EXT4_INODE_DIRSYNC)
+#define EXT4_TOPDIR_FL (1 << EXT4_INODE_TOPDIR)
+#define EXT4_HUGE_FILE_FL (1 << EXT4_INODE_HUGE_FILE)
+#define EXT4_EXTENTS_FL (1 << EXT4_INODE_EXTENTS)
+#define EXT4_EA_INODE_FL (1 << EXT4_INODE_EA_INODE)
+#define EXT4_EOFBLOCKS_FL (1 << EXT4_INODE_EOFBLOCKS)
+#define EXT4_RESERVED_FL (1 << EXT4_INODE_RESERVED)
#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
#define EXT4_FL_USER_MODIFIABLE 0x004B80FF /* User modifiable flags */
@@ -399,37 +430,6 @@ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
return flags & EXT4_OTHER_FLMASK;
}
-/*
- * Inode flags used for atomic set/get
- */
-enum {
- EXT4_INODE_SECRM = 0, /* Secure deletion */
- EXT4_INODE_UNRM = 1, /* Undelete */
- EXT4_INODE_COMPR = 2, /* Compress file */
- EXT4_INODE_SYNC = 3, /* Synchronous updates */
- EXT4_INODE_IMMUTABLE = 4, /* Immutable file */
- EXT4_INODE_APPEND = 5, /* writes to file may only append */
- EXT4_INODE_NODUMP = 6, /* do not dump file */
- EXT4_INODE_NOATIME = 7, /* do not update atime */
-/* Reserved for compression usage... */
- EXT4_INODE_DIRTY = 8,
- EXT4_INODE_COMPRBLK = 9, /* One or more compressed clusters */
- EXT4_INODE_NOCOMPR = 10, /* Don't compress */
- EXT4_INODE_ECOMPR = 11, /* Compression error */
-/* End compression flags --- maybe not all used */
- EXT4_INODE_INDEX = 12, /* hash-indexed directory */
- EXT4_INODE_IMAGIC = 13, /* AFS directory */
- EXT4_INODE_JOURNAL_DATA = 14, /* file data should be journaled */
- EXT4_INODE_NOTAIL = 15, /* file tail should not be merged */
- EXT4_INODE_DIRSYNC = 16, /* dirsync behaviour (directories only) */
- EXT4_INODE_TOPDIR = 17, /* Top of directory hierarchies*/
- EXT4_INODE_HUGE_FILE = 18, /* Set to each huge file */
- EXT4_INODE_EXTENTS = 19, /* Inode uses extents */
- EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
- EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
- EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
-};
-
#define TEST_FLAG_VALUE(FLAG) (EXT4_##FLAG##_FL == (1 << EXT4_INODE_##FLAG))
#define CHECK_FLAG_VALUE(FLAG) if (!TEST_FLAG_VALUE(FLAG)) { \
printk(KERN_EMERG "EXT4 flag fail: " #FLAG ": %d %d\n", \
--
1.7.8.rc2.5.g815b
--
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