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f2fs: check read only condition before beginning write out 

If the filesystem is mounted as read-only then return from that point itself
instead of first doing a writeout/wait and then checking for read-only
condition.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
This commit is contained in:
Namjae Jeon 2012-12-01 10:56:01 +09:00 committed by Jaegeuk Kim
parent 154a086529
commit 1fa95b0b67
1 changed files with 3 additions and 2 deletions
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5
fs/f2fs/file.c
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@ -132,14 +132,15 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
.for_reclaim = 0,
};
if (inode->i_sb->s_flags & MS_RDONLY)
return 0;
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;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
goto out;