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9p: Fill min and max timestamps in sb 

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>
Acked-by: Jeff Layton <jlayton@kernel.org>
Cc: ericvh@gmail.com
Cc: lucho@ionkov.net
Cc: asmadeus@codewreck.org
Cc: v9fs-developer@lists.sourceforge.net
This commit is contained in:
Deepa Dinamani 2019-03-06 14:09:42 -08:00
parent 22b139691f
commit d5c6e2d518
1 changed files with 5 additions and 1 deletions
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6
fs/9p/vfs_super.c
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@ -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)