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Message-Id: <1341404514-13660-6-git-send-email-dedekind1@gmail.com>
Date: Wed, 4 Jul 2012 15:21:54 +0300
From: Artem Bityutskiy <dedekind1@...il.com>
To: Theodore Tso <tytso@....edu>, Jan Kara <jack@...e.cz>
Cc: Linux FS Maling List <linux-fsdevel@...r.kernel.org>,
Linux Kernel Maling List <linux-kernel@...r.kernel.org>,
Ext4 Mailing List <linux-ext4@...r.kernel.org>
Subject: [PATCHv4 5/5] ext4: simplify superblock dirtying
From: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
The '__ext4_handle_dirty_metadata()' takes a 'now' argument which does not add
any value anymore (after we removed 'ext4_write_super()'). First of all, it
only affects the non-journalled file-system case.
1. If 'now' is true, we just re-calculate the superblock checksum and submit
it down for asynchronous I/O.
2. If 'now' is false, we call 'ext4_commit_super()' which essentially does the
same, but it performs better error checking and additionally updates few
counters like 's_kbytes_written'.
So we can simplify the code a bit by killing the 'now' argument.
This change was suggested by Jan Kara <jack@...e.cz>.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>
---
fs/ext4/ext4_jbd2.c | 7 +------
fs/ext4/ext4_jbd2.h | 7 ++-----
fs/ext4/inode.c | 2 +-
fs/ext4/namei.c | 4 ++--
fs/ext4/resize.c | 2 +-
5 files changed, 7 insertions(+), 15 deletions(-)
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 27354df..ce169e6 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -138,8 +138,7 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
}
int __ext4_handle_dirty_super(const char *where, unsigned int line,
- handle_t *handle, struct super_block *sb,
- int now)
+ handle_t *handle, struct super_block *sb)
{
struct buffer_head *bh = EXT4_SB(sb)->s_sbh;
int err = 0;
@@ -151,10 +150,6 @@ int __ext4_handle_dirty_super(const char *where, unsigned int line,
if (err)
ext4_journal_abort_handle(where, line, __func__,
bh, handle, err);
- } else if (now) {
- ext4_superblock_csum_set(sb,
- (struct ext4_super_block *)bh->b_data);
- mark_buffer_dirty(bh);
} else
err = ext4_commit_super(sb, 0);
return err;
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index f440e8f1..83b20fc 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -213,8 +213,7 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
struct buffer_head *bh);
int __ext4_handle_dirty_super(const char *where, unsigned int line,
- handle_t *handle, struct super_block *sb,
- int now);
+ handle_t *handle, struct super_block *sb);
#define ext4_journal_get_write_access(handle, bh) \
__ext4_journal_get_write_access(__func__, __LINE__, (handle), (bh))
@@ -226,10 +225,8 @@ int __ext4_handle_dirty_super(const char *where, unsigned int line,
#define ext4_handle_dirty_metadata(handle, inode, bh) \
__ext4_handle_dirty_metadata(__func__, __LINE__, (handle), (inode), \
(bh))
-#define ext4_handle_dirty_super_now(handle, sb) \
- __ext4_handle_dirty_super(__func__, __LINE__, (handle), (sb), 1)
#define ext4_handle_dirty_super(handle, sb) \
- __ext4_handle_dirty_super(__func__, __LINE__, (handle), (sb), 0)
+ __ext4_handle_dirty_super(__func__, __LINE__, (handle), (sb))
handle_t *ext4_journal_start_sb(struct super_block *sb, int nblocks);
int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 02bc8cb..b1bd96f 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4034,7 +4034,7 @@ static int ext4_do_update_inode(handle_t *handle,
EXT4_SET_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
ext4_handle_sync(handle);
- err = ext4_handle_dirty_super_now(handle, sb);
+ err = ext4_handle_dirty_super(handle, sb);
}
}
raw_inode->i_generation = cpu_to_le32(inode->i_generation);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 5845cd9..f155d57 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2397,7 +2397,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
/* Insert this inode at the head of the on-disk orphan list... */
NEXT_ORPHAN(inode) = le32_to_cpu(EXT4_SB(sb)->s_es->s_last_orphan);
EXT4_SB(sb)->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
- err = ext4_handle_dirty_super_now(handle, sb);
+ err = ext4_handle_dirty_super(handle, sb);
rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
if (!err)
err = rc;
@@ -2470,7 +2470,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode)
if (err)
goto out_brelse;
sbi->s_es->s_last_orphan = cpu_to_le32(ino_next);
- err = ext4_handle_dirty_super_now(handle, inode->i_sb);
+ err = ext4_handle_dirty_super(handle, inode->i_sb);
} else {
struct ext4_iloc iloc2;
struct inode *i_prev =
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 7ea6cbb..09c7aae 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -798,7 +798,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
ext4_kvfree(o_group_desc);
le16_add_cpu(&es->s_reserved_gdt_blocks, -1);
- err = ext4_handle_dirty_super_now(handle, sb);
+ err = ext4_handle_dirty_super(handle, sb);
if (err)
ext4_std_error(sb, err);
--
1.7.7.6
--
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