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xfs: remove if_rdev

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We can simply use the i_rdev field in the Linux inode and just convert
to and from the XFS dev_t when reading or logging/writing the inode.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2017-10-19 11:07:09 -07:00 committed by Darrick J. Wong
parent 42b67dc6ff
commit 66f364649d
7 changed files with 30 additions and 42 deletions
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38
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -42,21 +42,27 @@ STATIC int xfs_iformat_local(xfs_inode_t *, xfs_dinode_t *, int, int);
STATIC int xfs_iformat_extents(xfs_inode_t *, xfs_dinode_t *, int);
STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int);
static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
{
return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
}
/*
* Move inode type and inode format specific information from the
* on-disk inode to the in-core inode. For fifos, devs, and sockets
* this means set if_rdev to the proper value. For files, directories,
* and symlinks this means to bring in the in-line data or extent
* pointers. For a file in B-tree format, only the root is immediately
* brought in-core. The rest will be in-lined in if_extents when it
* is first referenced (see xfs_iread_extents()).
* Copy inode type and data and attr format specific information from the
* on-disk inode to the in-core inode and fork structures. For fifos, devices,
* and sockets this means set i_rdev to the proper value. For files,
* directories, and symlinks this means to bring in the in-line data or extent
* pointers as well as the attribute fork. For a fork in B-tree format, only
* the root is immediately brought in-core. The rest will be read in later when
* first referenced (see xfs_iread_extents()).
*/
int
xfs_iformat_fork(
xfs_inode_t *ip,
xfs_dinode_t *dip)
struct xfs_inode *ip,
struct xfs_dinode *dip)
{
xfs_attr_shortform_t *atp;
struct inode *inode = VFS_I(ip);
struct xfs_attr_shortform *atp;
int size;
int error = 0;
xfs_fsize_t di_size;
@ -95,8 +101,7 @@ xfs_iformat_fork(
return -EFSCORRUPTED;
}
if (unlikely(xfs_is_reflink_inode(ip) &&
(VFS_I(ip)->i_mode & S_IFMT) != S_IFREG)) {
if (unlikely(xfs_is_reflink_inode(ip) && !S_ISREG(inode->i_mode))) {
xfs_warn(ip->i_mount,
"corrupt dinode %llu, wrong file type for reflink.",
ip->i_ino);
@ -115,7 +120,7 @@ xfs_iformat_fork(
return -EFSCORRUPTED;
}
switch (VFS_I(ip)->i_mode & S_IFMT) {
switch (inode->i_mode & S_IFMT) {
case S_IFIFO:
case S_IFCHR:
case S_IFBLK:
@ -126,7 +131,7 @@ xfs_iformat_fork(
return -EFSCORRUPTED;
}
ip->i_d.di_size = 0;
ip->i_df.if_u2.if_rdev = xfs_dinode_get_rdev(dip);
inode->i_rdev = xfs_to_linux_dev_t(xfs_dinode_get_rdev(dip));
break;
case S_IFREG:
@ -184,8 +189,7 @@ xfs_iformat_fork(
return error;
/* Check inline dir contents. */
if (S_ISDIR(VFS_I(ip)->i_mode) &&
dip->di_format == XFS_DINODE_FMT_LOCAL) {
if (S_ISDIR(inode->i_mode) && dip->di_format == XFS_DINODE_FMT_LOCAL) {
error = xfs_dir2_sf_verify(ip);
if (error) {
xfs_idestroy_fork(ip, XFS_DATA_FORK);
@ -898,7 +902,7 @@ xfs_iflush_fork(
case XFS_DINODE_FMT_DEV:
if (iip->ili_fields & XFS_ILOG_DEV) {
ASSERT(whichfork == XFS_DATA_FORK);
xfs_dinode_put_rdev(dip, ip->i_df.if_u2.if_rdev);
xfs_dinode_put_rdev(dip, sysv_encode_dev(VFS_I(ip)->i_rdev));
}
break;

1
fs/xfs/libxfs/xfs_inode_fork.h
View File

@ -69,7 +69,6 @@ typedef struct xfs_ifork {
/* very small file extents */
char if_inline_data[XFS_INLINE_DATA];
/* very small file data */
xfs_dev_t if_rdev; /* dev number if special */
} if_u2;
} xfs_ifork_t;

9
fs/xfs/xfs_inode.c
View File

@ -767,7 +767,7 @@ xfs_ialloc(
xfs_inode_t *pip,
umode_t mode,
xfs_nlink_t nlink,
xfs_dev_t rdev,
dev_t rdev,
prid_t prid,
int okalloc,
xfs_buf_t **ialloc_context,
@ -819,6 +819,7 @@ xfs_ialloc(
set_nlink(inode, nlink);
ip->i_d.di_uid = xfs_kuid_to_uid(current_fsuid());
ip->i_d.di_gid = xfs_kgid_to_gid(current_fsgid());
inode->i_rdev = rdev;
xfs_set_projid(ip, prid);
if (pip && XFS_INHERIT_GID(pip)) {
@ -867,7 +868,6 @@ xfs_ialloc(
case S_IFBLK:
case S_IFSOCK:
ip->i_d.di_format = XFS_DINODE_FMT_DEV;
ip->i_df.if_u2.if_rdev = rdev;
ip->i_df.if_flags = 0;
flags |= XFS_ILOG_DEV;
break;
@ -975,7 +975,7 @@ xfs_dir_ialloc(
the inode. */
umode_t mode,
xfs_nlink_t nlink,
xfs_dev_t rdev,
dev_t rdev,
prid_t prid, /* project id */
int okalloc, /* ok to allocate new space */
xfs_inode_t **ipp, /* pointer to inode; it will be
@ -1147,7 +1147,7 @@ xfs_create(
xfs_inode_t *dp,
struct xfs_name *name,
umode_t mode,
xfs_dev_t rdev,
dev_t rdev,
xfs_inode_t **ipp)
{
int is_dir = S_ISDIR(mode);
@ -1183,7 +1183,6 @@ xfs_create(
return error;
if (is_dir) {
rdev = 0;
resblks = XFS_MKDIR_SPACE_RES(mp, name->len);
tres = &M_RES(mp)->tr_mkdir;
} else {

4
fs/xfs/xfs_inode.h
View File

@ -391,7 +391,7 @@ void xfs_inactive(struct xfs_inode *ip);
int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name,
struct xfs_inode **ipp, struct xfs_name *ci_name);
int xfs_create(struct xfs_inode *dp, struct xfs_name *name,
umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp);
umode_t mode, dev_t rdev, struct xfs_inode **ipp);
int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry,
umode_t mode, struct xfs_inode **ipp);
int xfs_remove(struct xfs_inode *dp, struct xfs_name *name,
@ -428,7 +428,7 @@ xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip);
xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip);
int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t,
xfs_nlink_t, xfs_dev_t, prid_t, int,
xfs_nlink_t, dev_t, prid_t, int,
struct xfs_inode **, int *);
/* from xfs_file.c */

2
fs/xfs/xfs_inode_item.c
View File

@ -222,7 +222,7 @@ xfs_inode_item_format_data_fork(
iip->ili_fields &=
~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | XFS_ILOG_DEXT);
if (iip->ili_fields & XFS_ILOG_DEV)
ilf->ilf_u.ilfu_rdev = ip->i_df.if_u2.if_rdev;
ilf->ilf_u.ilfu_rdev = sysv_encode_dev(VFS_I(ip)->i_rdev);
break;
default:
ASSERT(0);

16
fs/xfs/xfs_iops.c
View File

@ -160,7 +160,6 @@ xfs_generic_create(
if (S_ISCHR(mode) || S_ISBLK(mode)) {
if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
return -EINVAL;
rdev = sysv_encode_dev(rdev);
} else {
rdev = 0;
}
@ -535,8 +534,7 @@ xfs_vn_getattr(
case S_IFBLK:
case S_IFCHR:
stat->blksize = BLKDEV_IOSIZE;
stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
sysv_minor(ip->i_df.if_u2.if_rdev));
stat->rdev = inode->i_rdev;
break;
default:
if (XFS_IS_REALTIME_INODE(ip)) {
@ -1231,18 +1229,6 @@ xfs_setup_inode(
inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid);
inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid);
switch (inode->i_mode & S_IFMT) {
case S_IFBLK:
case S_IFCHR:
inode->i_rdev =
MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
sysv_minor(ip->i_df.if_u2.if_rdev));
break;
default:
inode->i_rdev = 0;
break;
}
i_size_write(inode, ip->i_d.di_size);
xfs_diflags_to_iflags(inode, ip);

2
fs/xfs/xfs_itable.c
View File

@ -109,7 +109,7 @@ xfs_bulkstat_one_int(
switch (dic->di_format) {
case XFS_DINODE_FMT_DEV:
buf->bs_rdev = ip->i_df.if_u2.if_rdev;
buf->bs_rdev = sysv_encode_dev(inode->i_rdev);
buf->bs_blksize = BLKDEV_IOSIZE;
buf->bs_blocks = 0;
break;