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| author | Jan Kara <jack@suse.cz> | 2013-06-04 14:40:39 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-06-04 14:40:39 -0400 |
| commit | 92e6222dfb85db780ebd8caea6a3f9326c375bc0 (patch) | |
| tree | d57c6ca43d9b57117f5fe029ea0ccdc61a7369ab /fs/ext4 | |
| parent | 37b10dd06334ebc89f551d405a0fe27e1a622458 (diff) | |
| download | blackbird-op-linux-92e6222dfb85db780ebd8caea6a3f9326c375bc0.tar.gz blackbird-op-linux-92e6222dfb85db780ebd8caea6a3f9326c375bc0.zip | |
ext4: remove i_mutex from ext4_file_sync()
After removal of ext4_flush_unwritten_io() call, ext4_file_sync()
doesn't need i_mutex anymore. Forcing of transaction commits doesn't
need i_mutex as there's nothing inode specific in that code apart from
grabbing transaction ids from the inode. So remove the lock.
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/fsync.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 6019bd449576..fc938ebbddec 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -99,20 +99,18 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_ext4_sync_file_enter(file, datasync); if (inode->i_sb->s_flags & MS_RDONLY) - goto out_trace; + goto out; if (!journal) { ret = generic_file_fsync(file, start, end, datasync); if (!ret && !hlist_empty(&inode->i_dentry)) ret = ext4_sync_parent(inode); - goto out_trace; + 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. @@ -143,8 +141,6 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) ret = err; } out: - mutex_unlock(&inode->i_mutex); -out_trace: trace_ext4_sync_file_exit(inode, ret); return ret; } |
