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Subject[PATCH 20/47] staging/lustre/llite: issue OST_SYNC for fsync()
Date
From: Bobi Jam <bobijam.xu@intel.com>

The last parameter @datasync of fsync() has following indication:
* if datasync=0, we'd always flush data and metadata
* if datasync=1, we'd always flush data while does not flush modifed
metadata unless that metadata is needed in order to allow a
subsequent data retrieval to be correctly handled. For example, a
change to the file size would require a metadata flush.

Lustre client can not tell the difference easily, and would issue
MDS_SYNC and OST_SYNC in all cases.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-on: http://review.whamcloud.com/8684
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4388
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
---
drivers/staging/lustre/lustre/llite/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index c991ea5..872c878 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2653,7 +2653,7 @@ int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
if (!err)
ptlrpc_req_finished(req);

- if (datasync && S_ISREG(inode->i_mode)) {
+ if (S_ISREG(inode->i_mode)) {
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);

err = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
--
1.8.5.3


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