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Subject[PATCH 4/6] f2fs: check read only condition before beginning write out
Date
From: Namjae Jeon <namjae.jeon@samsung.com>

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>
---
fs/f2fs/file.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c1a108f..89241c5 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -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;

--
1.7.9.5


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