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Message-Id: <1365456754-29373-26-git-send-email-jack@suse.cz> Date: Mon, 8 Apr 2013 23:32:30 +0200 From: Jan Kara <jack@...e.cz> To: Ted Tso <tytso@....edu> Cc: linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz> Subject: [PATCH 25/29] ext4: Use generic_file_fsync() in ext4_file_fsync() in nojournal mode Just use the generic function instead of duplicating it. We only need to reshuffle the read-only check a bit (which is there to prevent writing to a filesystem which has been remounted read-only after error I assume). Signed-off-by: Jan Kara <jack@...e.cz> --- fs/ext4/fsync.c | 45 ++++++++++----------------------------------- 1 files changed, 10 insertions(+), 35 deletions(-) diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index e02ba1b..1c08780 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -73,32 +73,6 @@ static int ext4_sync_parent(struct inode *inode) return ret; } -/** - * __sync_file - generic_file_fsync without the locking and filemap_write - * @inode: inode to sync - * @datasync: only sync essential metadata if true - * - * This is just generic_file_fsync without the locking. This is needed for - * nojournal mode to make sure this inodes data/metadata makes it to disk - * properly. The i_mutex should be held already. - */ -static int __sync_inode(struct inode *inode, int datasync) -{ - int err; - int ret; - - ret = sync_mapping_buffers(inode->i_mapping); - if (!(inode->i_state & I_DIRTY)) - return ret; - if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) - return ret; - - err = sync_inode_metadata(inode, 1); - if (ret == 0) - ret = err; - return ret; -} - /* * akpm: A new design for ext4_sync_file(). * @@ -116,7 +90,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_mapping->host; struct ext4_inode_info *ei = EXT4_I(inode); journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; - int ret, err; + int ret = 0, err; tid_t commit_tid; bool needs_barrier = false; @@ -124,21 +98,21 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_ext4_sync_file_enter(file, datasync); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); - if (ret) - return ret; - mutex_lock(&inode->i_mutex); - if (inode->i_sb->s_flags & MS_RDONLY) - goto out; + goto out_trace; if (!journal) { - ret = __sync_inode(inode, datasync); + ret = generic_file_fsync(file, start, end, datasync); if (!ret && !hlist_empty(&inode->i_dentry)) ret = ext4_sync_parent(inode); goto out; } + ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (ret) + return ret; + mutex_lock(&inode->i_mutex); + /* * data=writeback,ordered: * The caller's filemap_fdatawrite()/wait will sync the data. @@ -169,8 +143,9 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) if (!ret) ret = err; } - out: +out: mutex_unlock(&inode->i_mutex); +out_trace: trace_ext4_sync_file_exit(inode, ret); return ret; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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