2012-08-31 16:47:14

by Namjae Jeon

[permalink] [raw]
Subject: [PATCH] fs: encode_fh: return FILEID_INVALID if invalid fid_type

This patch is a follow up on below patch:

[PATCH] exportfs: add FILEID_INVALID to indicate invalid fid_type
https://patchwork.kernel.org/patch/1385131/

Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Vivek Trivedi <[email protected]>
---
fs/btrfs/export.c | 4 ++--
fs/ceph/export.c | 4 ++--
fs/fuse/inode.c | 2 +-
fs/gfs2/export.c | 4 ++--
fs/isofs/export.c | 4 ++--
fs/nilfs2/namei.c | 4 ++--
fs/ocfs2/export.c | 4 ++--
fs/reiserfs/inode.c | 4 ++--
fs/udf/namei.c | 4 ++--
fs/xfs/xfs_export.c | 4 ++--
mm/cleancache.c | 2 +-
mm/shmem.c | 2 +-
12 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 614f34a..81ee29e 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -22,10 +22,10 @@ static int btrfs_encode_fh(struct inode *inode, u32 *fh, int *max_len,

if (parent && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
*max_len = BTRFS_FID_SIZE_CONNECTABLE;
- return 255;
+ return FILEID_INVALID;
} else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
*max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
- return 255;
+ return FILEID_INVALID;
}

len = BTRFS_FID_SIZE_NON_CONNECTABLE;
diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 8e1b60e..98bde89 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -79,7 +79,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
if (parent_inode) {
/* nfsd wants connectable */
*max_len = connected_handle_length;
- type = 255;
+ type = FILEID_INVALID;
} else {
dout("encode_fh %p\n", dentry);
fh->ino = ceph_ino(inode);
@@ -88,7 +88,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
}
} else {
*max_len = handle_length;
- type = 255;
+ type = FILEID_INVALID;
}
return type;
}
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 2690a76..b787a6f 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -672,7 +672,7 @@ static int fuse_encode_fh(struct inode *inode, u32 *fh, int *max_len,

if (*max_len < len) {
*max_len = len;
- return 255;
+ return FILEID_INVALID;
}

nodeid = get_fuse_inode(inode)->nodeid;
diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
index e8ed6d4..f7a8092 100644
--- a/fs/gfs2/export.c
+++ b/fs/gfs2/export.c
@@ -37,10 +37,10 @@ static int gfs2_encode_fh(struct inode *inode, __u32 *p, int *len,

if (parent && (*len < GFS2_LARGE_FH_SIZE)) {
*len = GFS2_LARGE_FH_SIZE;
- return 255;
+ return FILEID_INVALID;
} else if (*len < GFS2_SMALL_FH_SIZE) {
*len = GFS2_SMALL_FH_SIZE;
- return 255;
+ return FILEID_INVALID;
}

fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
diff --git a/fs/isofs/export.c b/fs/isofs/export.c
index 1d38044..5e693b3 100644
--- a/fs/isofs/export.c
+++ b/fs/isofs/export.c
@@ -125,10 +125,10 @@ isofs_export_encode_fh(struct inode *inode,
*/
if (parent && (len < 5)) {
*max_len = 5;
- return 255;
+ return FILEID_INVALID;
} else if (len < 3) {
*max_len = 3;
- return 255;
+ return FILEID_INVALID;
}

len = 3;
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 1d0c0b8..9de78f0 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -517,11 +517,11 @@ static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp,

if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) {
*lenp = NILFS_FID_SIZE_CONNECTABLE;
- return 255;
+ return FILEID_INVALID;
}
if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) {
*lenp = NILFS_FID_SIZE_NON_CONNECTABLE;
- return 255;
+ return FILEID_INVALID;
}

fid->cno = root->cno;
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index 322216a..2965116 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -195,11 +195,11 @@ static int ocfs2_encode_fh(struct inode *inode, u32 *fh_in, int *max_len,

if (parent && (len < 6)) {
*max_len = 6;
- type = 255;
+ type = FILEID_INVALID;
goto bail;
} else if (len < 3) {
*max_len = 3;
- type = 255;
+ type = FILEID_INVALID;
goto bail;
}

diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 855da58..1a212ed 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1599,10 +1599,10 @@ int reiserfs_encode_fh(struct inode *inode, __u32 * data, int *lenp,

if (parent && (maxlen < 5)) {
*lenp = 5;
- return 255;
+ return FILEID_INVALID;
} else if (maxlen < 3) {
*lenp = 3;
- return 255;
+ return FILEID_INVALID;
}

data[0] = inode->i_ino;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 95fee27..102c072 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1270,10 +1270,10 @@ static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,

if (parent && (len < 5)) {
*lenp = 5;
- return 255;
+ return FILEID_INVALID;
} else if (len < 3) {
*lenp = 3;
- return 255;
+ return FILEID_INVALID;
}

*lenp = 3;
diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c
index 4267922..a5a4e52 100644
--- a/fs/xfs/xfs_export.c
+++ b/fs/xfs/xfs_export.c
@@ -47,7 +47,7 @@ static int xfs_fileid_length(int fileid_type)
case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG:
return 6;
}
- return 255; /* invalid */
+ return FILEID_INVALID; /* invalid */
}

STATIC int
@@ -89,7 +89,7 @@ xfs_fs_encode_fh(
len = xfs_fileid_length(fileid_type);
if (*max_len < len) {
*max_len = len;
- return 255;
+ return FILEID_INVALID;
}
*max_len = len;

diff --git a/mm/cleancache.c b/mm/cleancache.c
index 32e6f41..d76ba74 100644
--- a/mm/cleancache.c
+++ b/mm/cleancache.c
@@ -89,7 +89,7 @@ static int cleancache_get_key(struct inode *inode,
fhfn = sb->s_export_op->encode_fh;
if (fhfn) {
len = (*fhfn)(inode, &key->u.fh[0], &maxlen, NULL);
- if (len <= 0 || len == 255)
+ if (len <= FILEID_ROOT || len == FILEID_INVALID)
return -1;
if (maxlen > CLEANCACHE_KEY_MAX)
return -1;
diff --git a/mm/shmem.c b/mm/shmem.c
index 1d04904..5cbae30 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2386,7 +2386,7 @@ static int shmem_encode_fh(struct inode *inode, __u32 *fh, int *len,
{
if (*len < 3) {
*len = 3;
- return 255;
+ return FILEID_INVALID;
}

if (inode_unhashed(inode)) {
--
1.7.9.5



2012-09-05 11:24:34

by Steven Whitehouse

[permalink] [raw]
Subject: Re: [PATCH] fs: encode_fh: return FILEID_INVALID if invalid fid_type

Hi,

On Fri, 2012-08-31 at 12:46 -0400, Namjae Jeon wrote:
> This patch is a follow up on below patch:
>
> [PATCH] exportfs: add FILEID_INVALID to indicate invalid fid_type
> https://patchwork.kernel.org/patch/1385131/
>
> Signed-off-by: Namjae Jeon <[email protected]>
> Signed-off-by: Vivek Trivedi <[email protected]>
Acked-by: Steven Whitehouse <[email protected]>

for the gfs2 bits,

Steve.

> ---
> fs/btrfs/export.c | 4 ++--
> fs/ceph/export.c | 4 ++--
> fs/fuse/inode.c | 2 +-
> fs/gfs2/export.c | 4 ++--
> fs/isofs/export.c | 4 ++--
> fs/nilfs2/namei.c | 4 ++--
> fs/ocfs2/export.c | 4 ++--
> fs/reiserfs/inode.c | 4 ++--
> fs/udf/namei.c | 4 ++--
> fs/xfs/xfs_export.c | 4 ++--
> mm/cleancache.c | 2 +-
> mm/shmem.c | 2 +-
> 12 files changed, 21 insertions(+), 21 deletions(-)
>
> diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
> index 614f34a..81ee29e 100644
> --- a/fs/btrfs/export.c
> +++ b/fs/btrfs/export.c
> @@ -22,10 +22,10 @@ static int btrfs_encode_fh(struct inode *inode, u32 *fh, int *max_len,
>
> if (parent && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
> *max_len = BTRFS_FID_SIZE_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
> *max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> len = BTRFS_FID_SIZE_NON_CONNECTABLE;
> diff --git a/fs/ceph/export.c b/fs/ceph/export.c
> index 8e1b60e..98bde89 100644
> --- a/fs/ceph/export.c
> +++ b/fs/ceph/export.c
> @@ -79,7 +79,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
> if (parent_inode) {
> /* nfsd wants connectable */
> *max_len = connected_handle_length;
> - type = 255;
> + type = FILEID_INVALID;
> } else {
> dout("encode_fh %p\n", dentry);
> fh->ino = ceph_ino(inode);
> @@ -88,7 +88,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
> }
> } else {
> *max_len = handle_length;
> - type = 255;
> + type = FILEID_INVALID;
> }
> return type;
> }
> diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
> index 2690a76..b787a6f 100644
> --- a/fs/fuse/inode.c
> +++ b/fs/fuse/inode.c
> @@ -672,7 +672,7 @@ static int fuse_encode_fh(struct inode *inode, u32 *fh, int *max_len,
>
> if (*max_len < len) {
> *max_len = len;
> - return 255;
> + return FILEID_INVALID;
> }
>
> nodeid = get_fuse_inode(inode)->nodeid;
> diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
> index e8ed6d4..f7a8092 100644
> --- a/fs/gfs2/export.c
> +++ b/fs/gfs2/export.c
> @@ -37,10 +37,10 @@ static int gfs2_encode_fh(struct inode *inode, __u32 *p, int *len,
>
> if (parent && (*len < GFS2_LARGE_FH_SIZE)) {
> *len = GFS2_LARGE_FH_SIZE;
> - return 255;
> + return FILEID_INVALID;
> } else if (*len < GFS2_SMALL_FH_SIZE) {
> *len = GFS2_SMALL_FH_SIZE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
> diff --git a/fs/isofs/export.c b/fs/isofs/export.c
> index 1d38044..5e693b3 100644
> --- a/fs/isofs/export.c
> +++ b/fs/isofs/export.c
> @@ -125,10 +125,10 @@ isofs_export_encode_fh(struct inode *inode,
> */
> if (parent && (len < 5)) {
> *max_len = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < 3) {
> *max_len = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> len = 3;
> diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
> index 1d0c0b8..9de78f0 100644
> --- a/fs/nilfs2/namei.c
> +++ b/fs/nilfs2/namei.c
> @@ -517,11 +517,11 @@ static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
>
> if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) {
> *lenp = NILFS_FID_SIZE_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
> if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) {
> *lenp = NILFS_FID_SIZE_NON_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> fid->cno = root->cno;
> diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
> index 322216a..2965116 100644
> --- a/fs/ocfs2/export.c
> +++ b/fs/ocfs2/export.c
> @@ -195,11 +195,11 @@ static int ocfs2_encode_fh(struct inode *inode, u32 *fh_in, int *max_len,
>
> if (parent && (len < 6)) {
> *max_len = 6;
> - type = 255;
> + type = FILEID_INVALID;
> goto bail;
> } else if (len < 3) {
> *max_len = 3;
> - type = 255;
> + type = FILEID_INVALID;
> goto bail;
> }
>
> diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
> index 855da58..1a212ed 100644
> --- a/fs/reiserfs/inode.c
> +++ b/fs/reiserfs/inode.c
> @@ -1599,10 +1599,10 @@ int reiserfs_encode_fh(struct inode *inode, __u32 * data, int *lenp,
>
> if (parent && (maxlen < 5)) {
> *lenp = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (maxlen < 3) {
> *lenp = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> data[0] = inode->i_ino;
> diff --git a/fs/udf/namei.c b/fs/udf/namei.c
> index 95fee27..102c072 100644
> --- a/fs/udf/namei.c
> +++ b/fs/udf/namei.c
> @@ -1270,10 +1270,10 @@ static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
>
> if (parent && (len < 5)) {
> *lenp = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < 3) {
> *lenp = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> *lenp = 3;
> diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c
> index 4267922..a5a4e52 100644
> --- a/fs/xfs/xfs_export.c
> +++ b/fs/xfs/xfs_export.c
> @@ -47,7 +47,7 @@ static int xfs_fileid_length(int fileid_type)
> case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG:
> return 6;
> }
> - return 255; /* invalid */
> + return FILEID_INVALID; /* invalid */
> }
>
> STATIC int
> @@ -89,7 +89,7 @@ xfs_fs_encode_fh(
> len = xfs_fileid_length(fileid_type);
> if (*max_len < len) {
> *max_len = len;
> - return 255;
> + return FILEID_INVALID;
> }
> *max_len = len;
>
> diff --git a/mm/cleancache.c b/mm/cleancache.c
> index 32e6f41..d76ba74 100644
> --- a/mm/cleancache.c
> +++ b/mm/cleancache.c
> @@ -89,7 +89,7 @@ static int cleancache_get_key(struct inode *inode,
> fhfn = sb->s_export_op->encode_fh;
> if (fhfn) {
> len = (*fhfn)(inode, &key->u.fh[0], &maxlen, NULL);
> - if (len <= 0 || len == 255)
> + if (len <= FILEID_ROOT || len == FILEID_INVALID)
> return -1;
> if (maxlen > CLEANCACHE_KEY_MAX)
> return -1;
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 1d04904..5cbae30 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -2386,7 +2386,7 @@ static int shmem_encode_fh(struct inode *inode, __u32 *fh, int *len,
> {
> if (*len < 3) {
> *len = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> if (inode_unhashed(inode)) {



2013-02-11 13:39:50

by Sage Weil

[permalink] [raw]
Subject: Re: [PATCH] fs: encode_fh: return FILEID_INVALID if invalid fid_type

Acked-by: Sage Weil <[email protected]>

On Mon, 11 Feb 2013, Namjae Jeon wrote:

> From: Namjae Jeon <[email protected]>
>
> This patch is a follow up on below patch:
>
> [PATCH] exportfs: add FILEID_INVALID to indicate invalid fid_type
> commit: 216b6cbdcbd86b1db0754d58886b466ae31f5a63
>
> Signed-off-by: Namjae Jeon <[email protected]>
> Signed-off-by: Vivek Trivedi <[email protected]>
> Acked-by: Steven Whitehouse <[email protected]>
> ---
> fs/btrfs/export.c | 4 ++--
> fs/ceph/export.c | 4 ++--
> fs/fuse/inode.c | 2 +-
> fs/gfs2/export.c | 4 ++--
> fs/isofs/export.c | 4 ++--
> fs/nilfs2/namei.c | 4 ++--
> fs/ocfs2/export.c | 4 ++--
> fs/reiserfs/inode.c | 4 ++--
> fs/udf/namei.c | 4 ++--
> fs/xfs/xfs_export.c | 4 ++--
> mm/cleancache.c | 2 +-
> mm/shmem.c | 2 +-
> 12 files changed, 21 insertions(+), 21 deletions(-)
>
> diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
> index 614f34a..81ee29e 100644
> --- a/fs/btrfs/export.c
> +++ b/fs/btrfs/export.c
> @@ -22,10 +22,10 @@ static int btrfs_encode_fh(struct inode *inode, u32 *fh, int *max_len,
>
> if (parent && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
> *max_len = BTRFS_FID_SIZE_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
> *max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> len = BTRFS_FID_SIZE_NON_CONNECTABLE;
> diff --git a/fs/ceph/export.c b/fs/ceph/export.c
> index ca3ab3f..16796be 100644
> --- a/fs/ceph/export.c
> +++ b/fs/ceph/export.c
> @@ -81,7 +81,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
> if (parent_inode) {
> /* nfsd wants connectable */
> *max_len = connected_handle_length;
> - type = 255;
> + type = FILEID_INVALID;
> } else {
> dout("encode_fh %p\n", dentry);
> fh->ino = ceph_ino(inode);
> @@ -90,7 +90,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
> }
> } else {
> *max_len = handle_length;
> - type = 255;
> + type = FILEID_INVALID;
> }
> if (dentry)
> dput(dentry);
> diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
> index 9876a87..973e8f0 100644
> --- a/fs/fuse/inode.c
> +++ b/fs/fuse/inode.c
> @@ -679,7 +679,7 @@ static int fuse_encode_fh(struct inode *inode, u32 *fh, int *max_len,
>
> if (*max_len < len) {
> *max_len = len;
> - return 255;
> + return FILEID_INVALID;
> }
>
> nodeid = get_fuse_inode(inode)->nodeid;
> diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
> index 4767774..9973df4 100644
> --- a/fs/gfs2/export.c
> +++ b/fs/gfs2/export.c
> @@ -37,10 +37,10 @@ static int gfs2_encode_fh(struct inode *inode, __u32 *p, int *len,
>
> if (parent && (*len < GFS2_LARGE_FH_SIZE)) {
> *len = GFS2_LARGE_FH_SIZE;
> - return 255;
> + return FILEID_INVALID;
> } else if (*len < GFS2_SMALL_FH_SIZE) {
> *len = GFS2_SMALL_FH_SIZE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
> diff --git a/fs/isofs/export.c b/fs/isofs/export.c
> index 2b4f235..12088d8 100644
> --- a/fs/isofs/export.c
> +++ b/fs/isofs/export.c
> @@ -125,10 +125,10 @@ isofs_export_encode_fh(struct inode *inode,
> */
> if (parent && (len < 5)) {
> *max_len = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < 3) {
> *max_len = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> len = 3;
> diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
> index 1d0c0b8..9de78f0 100644
> --- a/fs/nilfs2/namei.c
> +++ b/fs/nilfs2/namei.c
> @@ -517,11 +517,11 @@ static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
>
> if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) {
> *lenp = NILFS_FID_SIZE_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
> if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) {
> *lenp = NILFS_FID_SIZE_NON_CONNECTABLE;
> - return 255;
> + return FILEID_INVALID;
> }
>
> fid->cno = root->cno;
> diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
> index 322216a..2965116 100644
> --- a/fs/ocfs2/export.c
> +++ b/fs/ocfs2/export.c
> @@ -195,11 +195,11 @@ static int ocfs2_encode_fh(struct inode *inode, u32 *fh_in, int *max_len,
>
> if (parent && (len < 6)) {
> *max_len = 6;
> - type = 255;
> + type = FILEID_INVALID;
> goto bail;
> } else if (len < 3) {
> *max_len = 3;
> - type = 255;
> + type = FILEID_INVALID;
> goto bail;
> }
>
> diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
> index 30195bc..77d6d47 100644
> --- a/fs/reiserfs/inode.c
> +++ b/fs/reiserfs/inode.c
> @@ -1604,10 +1604,10 @@ int reiserfs_encode_fh(struct inode *inode, __u32 * data, int *lenp,
>
> if (parent && (maxlen < 5)) {
> *lenp = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (maxlen < 3) {
> *lenp = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> data[0] = inode->i_ino;
> diff --git a/fs/udf/namei.c b/fs/udf/namei.c
> index 95fee27..102c072 100644
> --- a/fs/udf/namei.c
> +++ b/fs/udf/namei.c
> @@ -1270,10 +1270,10 @@ static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
>
> if (parent && (len < 5)) {
> *lenp = 5;
> - return 255;
> + return FILEID_INVALID;
> } else if (len < 3) {
> *lenp = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> *lenp = 3;
> diff --git a/fs/xfs/xfs_export.c b/fs/xfs/xfs_export.c
> index a836118..3391800 100644
> --- a/fs/xfs/xfs_export.c
> +++ b/fs/xfs/xfs_export.c
> @@ -48,7 +48,7 @@ static int xfs_fileid_length(int fileid_type)
> case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG:
> return 6;
> }
> - return 255; /* invalid */
> + return FILEID_INVALID; /* invalid */
> }
>
> STATIC int
> @@ -90,7 +90,7 @@ xfs_fs_encode_fh(
> len = xfs_fileid_length(fileid_type);
> if (*max_len < len) {
> *max_len = len;
> - return 255;
> + return FILEID_INVALID;
> }
> *max_len = len;
>
> diff --git a/mm/cleancache.c b/mm/cleancache.c
> index 32e6f41..d76ba74 100644
> --- a/mm/cleancache.c
> +++ b/mm/cleancache.c
> @@ -89,7 +89,7 @@ static int cleancache_get_key(struct inode *inode,
> fhfn = sb->s_export_op->encode_fh;
> if (fhfn) {
> len = (*fhfn)(inode, &key->u.fh[0], &maxlen, NULL);
> - if (len <= 0 || len == 255)
> + if (len <= FILEID_ROOT || len == FILEID_INVALID)
> return -1;
> if (maxlen > CLEANCACHE_KEY_MAX)
> return -1;
> diff --git a/mm/shmem.c b/mm/shmem.c
> index a43ae7f..585b007 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -2351,7 +2351,7 @@ static int shmem_encode_fh(struct inode *inode, __u32 *fh, int *len,
> {
> if (*len < 3) {
> *len = 3;
> - return 255;
> + return FILEID_INVALID;
> }
>
> if (inode_unhashed(inode)) {
> --
> 1.7.9.5
>
> --
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