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From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH 04/19] f2fs: add feature facility in superblock
Date: Fri,  1 May 2015 17:48:31 -0700	[thread overview]
Message-ID: <1430527726-68547-4-git-send-email-jaegeuk@kernel.org> (raw)
In-Reply-To: <1430527726-68547-1-git-send-email-jaegeuk@kernel.org>

This patch introduces a feature in superblock, which will indicate any new
features for f2fs.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/f2fs.h          | 7 +++++++
 include/linux/f2fs_fs.h | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cd9748a..e1dd986 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -70,6 +70,13 @@ struct f2fs_mount_info {
 	unsigned int	opt;
 };
 
+#define F2FS_HAS_FEATURE(sb, mask)					\
+	((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
+#define F2FS_SET_FEATURE(sb, mask)					\
+	F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
+#define F2FS_CLEAR_FEATURE(sb, mask)					\
+	F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
+
 #define CRCPOLY_LE 0xedb88320
 
 static inline __u32 f2fs_crc32(void *buf, size_t len)
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 8d345c2..d44e97f 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -90,7 +90,8 @@ struct f2fs_super_block {
 	__le32 cp_payload;
 	__u8 version[VERSION_LEN];	/* the kernel version */
 	__u8 init_version[VERSION_LEN];	/* the initial kernel version */
-	__u8 reserved[892];		/* valid reserved region */
+	__le32 feature;			/* defined features */
+	__u8 reserved[888];		/* valid reserved region */
 } __packed;
 
 /*
-- 
2.1.1


WARNING: multiple messages have this Message-ID (diff)
From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH 04/19] f2fs: add feature facility in superblock
Date: Fri,  1 May 2015 17:48:31 -0700	[thread overview]
Message-ID: <1430527726-68547-4-git-send-email-jaegeuk@kernel.org> (raw)
In-Reply-To: <1430527726-68547-1-git-send-email-jaegeuk@kernel.org>

This patch introduces a feature in superblock, which will indicate any new
features for f2fs.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/f2fs.h          | 7 +++++++
 include/linux/f2fs_fs.h | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cd9748a..e1dd986 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -70,6 +70,13 @@ struct f2fs_mount_info {
 	unsigned int	opt;
 };
 
+#define F2FS_HAS_FEATURE(sb, mask)					\
+	((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
+#define F2FS_SET_FEATURE(sb, mask)					\
+	F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
+#define F2FS_CLEAR_FEATURE(sb, mask)					\
+	F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
+
 #define CRCPOLY_LE 0xedb88320
 
 static inline __u32 f2fs_crc32(void *buf, size_t len)
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 8d345c2..d44e97f 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -90,7 +90,8 @@ struct f2fs_super_block {
 	__le32 cp_payload;
 	__u8 version[VERSION_LEN];	/* the kernel version */
 	__u8 init_version[VERSION_LEN];	/* the initial kernel version */
-	__u8 reserved[892];		/* valid reserved region */
+	__le32 feature;			/* defined features */
+	__u8 reserved[888];		/* valid reserved region */
 } __packed;
 
 /*
-- 
2.1.1


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  parent reply	other threads:[~2015-05-02  0:49 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-02  0:48 [PATCH 01/19] f2fs: fix not to check IS_ERR for null pointer Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 02/19] f2fs: add missing version info in superblock Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 03/19] f2fs: move existing definitions into f2fs.h Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` Jaegeuk Kim [this message]
2015-05-02  0:48   ` [PATCH 04/19] f2fs: add feature facility in superblock Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 05/19] f2fs: add f2fs_map_blocks Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 06/19] f2fs: introduce f2fs_commit_super Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 07/19] f2fs: expose f2fs_mpage_readpages Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 08/19] f2fs: clean up f2fs_lookup Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 09/19] f2fs: add f2fs_may_inline_{data, dentry} Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 10/19] f2fs: add sbi and page pointer in f2fs_io_info Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 11/19] f2fs: move get_page for gc victims Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 12/19] f2fs: introduce dot and dotdot name check Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 13/19] f2fs: fix race on allocating and deallocating a dentry block Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 14/19] f2fs: add need_dentry_mark Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 15/19] f2fs: fix counting the number of inline_data inodes Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 16/19] f2fs: split find_data_page according to specific purposes Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 17/19] f2fs: revmove spin_lock for write_orphan_inodes Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 18/19] f2fs: introduce discard_map for f2fs_trim_fs Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim
2015-05-02  0:48 ` [PATCH 19/19] f2fs: issue discard with finally produced len and minlen Jaegeuk Kim
2015-05-02  0:48   ` Jaegeuk Kim

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