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| author | Deepa Dinamani <deepa.kernel@gmail.com> | 2019-03-26 22:55:56 +0300 |
|---|---|---|
| committer | Deepa Dinamani <deepa.kernel@gmail.com> | 2019-08-30 17:27:18 +0300 |
| commit | 1fcb79c1b218018b64919de8af20e64340850716 (patch) | |
| tree | ce0365e395467ad1275d3876d0bef3c3d97665cb /fs/nfs/super.c | |
| parent | 4881c4971df04107b37c29bb6c719ec29ceb6571 (diff) | |
| download | linux-1fcb79c1b218018b64919de8af20e64340850716.tar.xz | |
fs: nfs: Initialize filesystem timestamp ranges
Fill in the appropriate limits to avoid inconsistencies
in the vfs cached inode times when timestamps are
outside the permitted range.
The time formats for various verious is detailed in the
RFCs as below:
https://tools.ietf.org/html/rfc7862(time metadata)
https://tools.ietf.org/html/rfc7530:
nfstime4
struct nfstime4 {
int64_t seconds;
uint32_t nseconds;
};
https://tools.ietf.org/html/rfc1094
struct timeval {
unsigned int seconds;
unsigned int useconds;
};
https://tools.ietf.org/html/rfc1813
struct nfstime3 {
uint32 seconds;
uint32 nseconds;
};
Use the limits as per the RFC.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Acked-by: Jeff Layton <jlayton@kernel.org>
Cc: trond.myklebust@hammerspace.com
Cc: anna.schumaker@netapp.com
Cc: linux-nfs@vger.kernel.org
Diffstat (limited to 'fs/nfs/super.c')
| -rw-r--r-- | fs/nfs/super.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 703f595dce90..19a76cfa8b1f 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2382,6 +2382,15 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info) sb->s_flags |= SB_POSIXACL; sb->s_time_gran = 1; sb->s_export_op = &nfs_export_ops; + } else + sb->s_time_gran = 1000; + + if (server->nfs_client->rpc_ops->version != 4) { + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; + } else { + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; } nfs_initialise_sb(sb); @@ -2402,7 +2411,6 @@ static void nfs_clone_super(struct super_block *sb, sb->s_maxbytes = old_sb->s_maxbytes; sb->s_xattr = old_sb->s_xattr; sb->s_op = old_sb->s_op; - sb->s_time_gran = 1; sb->s_export_op = old_sb->s_export_op; if (server->nfs_client->rpc_ops->version != 2) { @@ -2410,6 +2418,16 @@ static void nfs_clone_super(struct super_block *sb, * so ourselves when necessary. */ sb->s_flags |= SB_POSIXACL; + sb->s_time_gran = 1; + } else + sb->s_time_gran = 1000; + + if (server->nfs_client->rpc_ops->version != 4) { + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; + } else { + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; } nfs_initialise_sb(sb); |