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ocfs2: fix ocfs2_sync_file() if filesystem is readonly

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If filesystem is readonly, there is no need to flush drive's caches or
force any uncommitted transactions.

[akpm@linux-foundation.org: return -EROFS, not 0]
Signed-off-by: Younger Liu <younger.liucn@gmail.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Younger Liu 2014-02-10 14:25:44 -08:00 committed by Linus Torvalds
parent 79040cad3f
commit a987c7ca7f
1 changed files with 3 additions and 0 deletions
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3
fs/ocfs2/file.c
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@ -185,6 +185,9 @@ static int ocfs2_sync_file(struct file *file, loff_t start, loff_t end,
file->f_path.dentry->d_name.name,
(unsigned long long)datasync);
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return -EROFS;
err = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (err)
return err;