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Subject[PATCH 06/10] lustre: honor AT_STATX_DONT_SYNC
Date
The description of this flag says "Don't sync attributes with the server".
In other words: always use the attributes cached in the kernel and don't
send network or local messages to refresh the attributes.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: James Simmons <jsimmons@infradead.org>
---
drivers/staging/lustre/lustre/llite/file.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index be665454f407..decbe5eb0c9d 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2955,14 +2955,16 @@ int ll_getattr(const struct path *path, struct kstat *stat,
struct ll_inode_info *lli = ll_i2info(inode);
int res;

- res = ll_inode_revalidate(path->dentry,
+ if (!(flags & AT_STATX_DONT_SYNC)) {
+ res = ll_inode_revalidate(path->dentry,
MDS_INODELOCK_UPDATE | MDS_INODELOCK_LOOKUP);
- ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
+ ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);

- if (res)
- return res;
+ if (res)
+ return res;

- OBD_FAIL_TIMEOUT(OBD_FAIL_GETATTR_DELAY, 30);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_GETATTR_DELAY, 30);
+ }

stat->dev = inode->i_sb->s_dev;
if (ll_need_32bit_api(sbi))
--
2.5.5
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