[v8,07/20] 9p: Fill min and max timestamps in sb
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Message ID 20190818165817.32634-8-deepa.kernel@gmail.com
State New
Headers show
  • vfs: Add support for timestamp limits
Related show

Commit Message

Deepa Dinamani Aug. 18, 2019, 4:58 p.m. UTC
struct p9_wstat and struct p9_stat_dotl indicate that the
wire transport uses u32 and u64 fields for timestamps.
Fill in the appropriate limits to avoid inconsistencies in
the vfs cached inode times when timestamps are outside the
permitted range.

Note that the upper bound for V9FS_PROTO_2000L is retained as S64_MAX.
This is because that is the upper bound supported by vfs.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: ericvh@gmail.com
Cc: lucho@ionkov.net
Cc: asmadeus@codewreck.org
Cc: v9fs-developer@lists.sourceforge.net
 fs/9p/vfs_super.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 08112fbcaece..ca243e658d71 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -69,8 +69,12 @@  v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
 	if (v9fs_proto_dotl(v9ses)) {
 		sb->s_op = &v9fs_super_ops_dotl;
 		sb->s_xattr = v9fs_xattr_handlers;
-	} else
+	} else {
 		sb->s_op = &v9fs_super_ops;
+		sb->s_time_max = U32_MAX;
+	}
+	sb->s_time_min = 0;
 	ret = super_setup_bdi(sb);
 	if (ret)