Allow filesystems to opt-in to a final check of wb_err if FS_WB_ERRSEQ
is set. Technically, we could just plumb these calls into all of the
fsync operations, but I think this means less code, changes and churn.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
include/linux/fs.h | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 17ba6284ab14..ef3feeec80b2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1742,12 +1742,6 @@ static inline int call_mmap(struct file *file, struct vm_area_struct *vma)
return file->f_op->mmap(file, vma);
}
-static inline int call_fsync(struct file *file, loff_t start, loff_t end,
- int datasync)
-{
- return file->f_op->fsync(file, start, end, datasync);
-}
-
ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
unsigned long nr_segs, unsigned long fast_segs,
struct iovec *fast_pointer,
@@ -2583,6 +2577,20 @@ static inline errseq_t filemap_sample_wb_err(struct address_space *mapping)
return errseq_sample(&mapping->wb_err);
}
+static inline int call_fsync(struct file *file, loff_t start, loff_t end,
+ int datasync)
+{
+ int ret;
+
+ ret = file->f_op->fsync(file, start, end, datasync);
+ if (file->f_mapping->host->i_sb->s_type->fs_flags & FS_WB_ERRSEQ) {
+ int ret2 = filemap_report_wb_err(file);
+ if (!ret)
+ ret = ret2;
+ }
+ return ret;
+}
+
extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
int datasync);
extern int vfs_fsync(struct file *file, int datasync);
--
2.13.0
--
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