Skip to content

L
linux
Commit 6d70dcef authored by Stephen Lord's avatar Stephen Lord
Browse files
Options

[XFS] Rework the remount path to better seperate the linux vfs portion 

and the xfs portion of it. Move the code to more appropriate
places in the tree.

SGI Modid: 2.5.x-xfs:slinx:146667a
parent 092488f7
Hide whitespace changes
Inline Side-by-side
Showing with 297 additions and 283 deletions
fs/xfs/linux/xfs_lrw.c
View file @ 6d70dcef
......@@ -857,33 +857,6 @@ XFS_bflush(xfs_buftarg_t *target)
pagebuf_delwri_flush(target, PBDF_WAIT, NULL);
}
/* Push all fs state out to disk
*/
void
XFS_log_write_unmount_ro(bhv_desc_t *bdp)
{
xfs_mount_t *mp;
int pincount = 0;
int count = 0;
int error;
mp = XFS_BHVTOM(bdp);
pagebuf_delwri_flush(mp->m_ddev_targp, PBDF_WAIT, &pincount);
xfs_finish_reclaim_all(mp);
do {
VFS_SYNC(XFS_MTOVFS(mp), SYNC_ATTR|SYNC_WAIT, NULL, error);
pagebuf_delwri_flush(mp->m_ddev_targp, PBDF_WAIT, &pincount);
if (pincount == 0) {delay(50); count++;}
} while (count < 2);
/* Ok now write out an unmount record */
xfs_log_unmount_write(mp);
xfs_unmountfs_writesb(mp);
}
/*
* If the underlying (log or data) device is readonly, there are some
* operations that cannot proceed.
......
fs/xfs/linux/xfs_lrw.h
View file @ 6d70dcef
......@@ -76,8 +76,6 @@ extern int xfs_iomap_write_unwritten(struct xfs_inode *, loff_t, size_t);
extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
extern void XFS_log_write_unmount_ro(struct bhv_desc *);
#define XFS_FSB_TO_DB_IO(io,fsb) \
(((io)->io_flags & XFS_IOCORE_RT) ? \
XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \
......
fs/xfs/linux/xfs_super.c
View file @ 6d70dcef
......@@ -42,22 +42,6 @@ STATIC struct super_operations linvfs_sops;
STATIC struct export_operations linvfs_export_ops;
STATIC kmem_cache_t * linvfs_inode_cachep;
#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
#define MNTOPT_LOGDEV "logdev" /* log device */
#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
#define MNTOPT_NOLOGFLUSH "nologflush" /* don't hard flush on log writes */
#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
STATIC struct xfs_mount_args *
args_allocate(
struct super_block *sb)
......@@ -78,221 +62,6 @@ args_allocate(
return args;
}
int
xfs_parseargs(
struct bhv_desc *bhv,
char *options,
struct xfs_mount_args *args,
int update)
{
struct vfs *vfsp = bhvtovfs(bhv);
char *this_char, *value, *eov;
int dsunit, dswidth, vol_dsunit, vol_dswidth;
int iosize;
if (!options)
return 0;
iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
while ((this_char = strsep(&options, ",")) != NULL) {
if (!*this_char)
continue;
if ((value = strchr(this_char, '=')) != NULL)
*value++ = 0;
if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGBUFS);
return -EINVAL;
}
args->logbufs = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
int last, in_kilobytes = 0;
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGBSIZE);
return -EINVAL;
}
last = strlen(value) - 1;
if (value[last] == 'K' || value[last] == 'k') {
in_kilobytes = 1;
value[last] = '\0';
}
args->logbufsize = simple_strtoul(value, &eov, 10);
if (in_kilobytes)
args->logbufsize <<= 10;
} else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGDEV);
return -EINVAL;
}
strncpy(args->logname, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_MTPT)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_MTPT);
return -EINVAL;
}
strncpy(args->mtpt, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_RTDEV)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_RTDEV);
return -EINVAL;
}
strncpy(args->rtname, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_BIOSIZE);
return -EINVAL;
}
iosize = simple_strtoul(value, &eov, 10);
args->flags |= XFSMNT_IOSIZE;
args->iosizelog = (uint8_t) iosize;
} else if (!strcmp(this_char, MNTOPT_WSYNC)) {
args->flags |= XFSMNT_WSYNC;
} else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
args->flags |= XFSMNT_OSYNCISOSYNC;
} else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
args->flags |= XFSMNT_NORECOVERY;
} else if (!strcmp(this_char, MNTOPT_INO64)) {
args->flags |= XFSMNT_INO64;
#ifndef XFS_BIG_FILESYSTEMS
printk("XFS: %s option not allowed on this system\n",
MNTOPT_INO64);
return -EINVAL;
#endif
} else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
args->flags |= XFSMNT_NOALIGN;
} else if (!strcmp(this_char, MNTOPT_SUNIT)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_SUNIT);
return -EINVAL;
}
dsunit = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_SWIDTH);
return -EINVAL;
}
dswidth = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_NOUUID)) {
args->flags |= XFSMNT_NOUUID;
} else if (!strcmp(this_char, MNTOPT_NOLOGFLUSH)) {
args->flags |= XFSMNT_NOLOGFLUSH;
} else if (!strcmp(this_char, "osyncisdsync")) {
/* no-op, this is now the default */
printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
} else if (!strcmp(this_char, "irixsgid")) {
printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
} else {
printk("XFS: unknown mount option [%s].\n", this_char);
return -EINVAL;
}
}
if (args->flags & XFSMNT_NORECOVERY) {
if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
printk("XFS: no-recovery mounts must be read-only.\n");
return -EINVAL;
}
}
if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
printk(
"XFS: sunit and swidth options incompatible with the noalign option\n");
return -EINVAL;
}
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
printk("XFS: sunit and swidth must be specified together\n");
return -EINVAL;
}
if (dsunit && (dswidth % dsunit != 0)) {
printk(
"XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
dswidth, dsunit);
return -EINVAL;
}
if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
if (dsunit) {
args->sunit = dsunit;
args->flags |= XFSMNT_RETERR;
} else {
args->sunit = vol_dsunit;
}
dswidth ? (args->swidth = dswidth) :
(args->swidth = vol_dswidth);
} else {
args->sunit = args->swidth = 0;
}
return 0;
}
int
xfs_showargs(
struct bhv_desc *bhv,
struct seq_file *m)
{
static struct proc_xfs_info {
int flag;
char *str;
} xfs_info[] = {
/* the few simple ones we can get from the mount struct */
{ XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
{ XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
{ XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
{ XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
{ 0, NULL }
};
struct proc_xfs_info *xfs_infop;
struct xfs_mount *mp = XFS_BHVTOM(bhv);
char b[BDEVNAME_SIZE];
for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
if (mp->m_flags & xfs_infop->flag)
seq_puts(m, xfs_infop->str);
}
if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
seq_printf(m, "," MNTOPT_BIOSIZE "=%d", mp->m_writeio_log);
if (mp->m_logbufs > 0)
seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
if (mp->m_logbsize > 0)
seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
if (mp->m_ddev_targp->pbr_dev != mp->m_logdev_targp->pbr_dev)
seq_printf(m, "," MNTOPT_LOGDEV "=%s",
bdevname(mp->m_logdev_targp->pbr_bdev, b));
if (mp->m_rtdev_targp &&
mp->m_ddev_targp->pbr_dev != mp->m_rtdev_targp->pbr_dev)
seq_printf(m, "," MNTOPT_RTDEV "=%s",
bdevname(mp->m_rtdev_targp->pbr_bdev, b));
if (mp->m_dalign > 0)
seq_printf(m, "," MNTOPT_SUNIT "=%d",
(int)XFS_FSB_TO_BB(mp, mp->m_dalign));
if (mp->m_swidth > 0)
seq_printf(m, "," MNTOPT_SWIDTH "=%d",
(int)XFS_FSB_TO_BB(mp, mp->m_swidth));
return 0;
}
STATIC __inline__ void
xfs_set_inodeops(
struct inode *inode)
......@@ -616,7 +385,6 @@ linvfs_remount(
char *options)
{
vfs_t *vfsp = LINVFS_GET_VFS(sb);
xfs_mount_t *mp = XFS_VFSTOM(vfsp);
struct xfs_mount_args *args = args_allocate(sb);
int error;
......@@ -624,24 +392,7 @@ linvfs_remount(
if (error)
goto out;
if (args->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
else
mp->m_flags &= ~XFS_MOUNT_NOATIME;
set_posix_acl_flag(sb);
linvfs_write_super(sb);
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
goto out;
if (*flags & MS_RDONLY) {
sb->s_flags |= MS_RDONLY;
XFS_log_write_unmount_ro(&mp->m_bhv);
vfsp->vfs_flag |= VFS_RDONLY;
} else {
vfsp->vfs_flag &= ~VFS_RDONLY;
}
VFS_MNTUPDATE(vfsp, flags, args, error);
out:
kmem_free(args, sizeof(*args));
......
fs/xfs/linux/xfs_super.h
View file @ 6d70dcef
......@@ -92,8 +92,6 @@ struct xfs_mount;
struct pb_target;
struct block_device;
extern int xfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
extern int xfs_showargs(bhv_desc_t *, struct seq_file *);
extern void xfs_initialize_vnode(bhv_desc_t *, vnode_t *, bhv_desc_t *, int);
extern int xfs_blkdev_get(struct xfs_mount *, const char *,
......
fs/xfs/linux/xfs_vfs.c
View file @ 6d70dcef
......@@ -88,6 +88,21 @@ vfs_unmount(
return ((*bhvtovfsops(next)->vfs_unmount)(next, fl, cr));
}
int
vfs_mntupdate(
struct bhv_desc *bdp,
int *fl,
struct xfs_mount_args *args)
{
struct bhv_desc *next = bdp;
ASSERT(next);
while (! (bhvtovfsops(next))->vfs_mntupdate)
next = BHV_NEXT(next);
return ((*bhvtovfsops(next)->vfs_mntupdate)(next, fl, args));
}
int
vfs_root(
struct bhv_desc *bdp,
......
fs/xfs/linux/xfs_vfs.h
View file @ 6d70dcef
......@@ -93,6 +93,8 @@ typedef int (*vfs_parseargs_t)(bhv_desc_t *, char *,
struct xfs_mount_args *, int);
typedef int (*vfs_showargs_t)(bhv_desc_t *, struct seq_file *);
typedef int (*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
typedef int (*vfs_mntupdate_t)(bhv_desc_t *, int *,
struct xfs_mount_args *);
typedef int (*vfs_root_t)(bhv_desc_t *, struct vnode **);
typedef int (*vfs_statvfs_t)(bhv_desc_t *, struct statfs *, struct vnode *);
typedef int (*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
......@@ -109,6 +111,7 @@ typedef struct vfsops {
vfs_parseargs_t vfs_parseargs; /* parse mount options */
vfs_showargs_t vfs_showargs; /* unparse mount options */
vfs_unmount_t vfs_unmount; /* unmount file system */
vfs_mntupdate_t vfs_mntupdate; /* update file system options */
vfs_root_t vfs_root; /* get root vnode */
vfs_statvfs_t vfs_statvfs; /* file system statistics */
vfs_sync_t vfs_sync; /* flush files */
......@@ -126,7 +129,8 @@ typedef struct vfsops {
#define VFS_MOUNT(v, ma,cr, rv) ((rv) = vfs_mount(VHEAD(v), ma,cr))
#define VFS_PARSEARGS(v, o,ma,f, rv) ((rv) = vfs_parseargs(VHEAD(v), o,ma,f))
#define VFS_SHOWARGS(v, m, rv) ((rv) = vfs_showargs(VHEAD(v), m))
#define VFS_UNMOUNT(v, f,cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
#define VFS_UNMOUNT(v, f, cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
#define VFS_MNTUPDATE(v, fl, args, rv) ((rv) = vfs_mntupdate(VHEAD(v), fl, args))
#define VFS_ROOT(v, vpp, rv) ((rv) = vfs_root(VHEAD(v), vpp))
#define VFS_STATVFS(v, sp,vp, rv) ((rv) = vfs_statvfs(VHEAD(v), sp,vp))
#define VFS_SYNC(v, flag,cr, rv) ((rv) = vfs_sync(VHEAD(v), flag,cr))
......@@ -143,6 +147,7 @@ typedef struct vfsops {
#define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = vfs_parseargs(b, o,ma,f))
#define PVFS_SHOWARGS(b, m, rv) ((rv) = vfs_showargs(b, m))
#define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = vfs_unmount(b, f,cr))
#define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = vfs_mntupdate(b, fl, args))
#define PVFS_ROOT(b, vpp, rv) ((rv) = vfs_root(b, vpp))
#define PVFS_STATVFS(b, sp,vp, rv) ((rv) = vfs_statvfs(b, sp,vp))
#define PVFS_SYNC(b, flag,cr, rv) ((rv) = vfs_sync(b, flag,cr))
......@@ -156,6 +161,7 @@ extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
extern int vfs_root(bhv_desc_t *, struct vnode **);
extern int vfs_statvfs(bhv_desc_t *, struct statfs *, struct vnode *);
extern int vfs_sync(bhv_desc_t *, int, struct cred *);
......
fs/xfs/xfs_vfsops.c
View file @ 6d70dcef
......@@ -49,7 +49,6 @@ xfs_init(void)
extern kmem_zone_t *xfs_efd_zone;
extern kmem_zone_t *xfs_efi_zone;
extern kmem_zone_t *xfs_dabuf_zone;
extern mutex_t xfs_uuidtabmon;
#ifdef DEBUG_NOT
extern ktrace_t *xfs_alloc_trace_buf;
extern ktrace_t *xfs_bmap_trace_buf;
......@@ -563,6 +562,46 @@ xfs_unmount(
return XFS_ERROR(error);
}
STATIC int
xfs_mntupdate(
bhv_desc_t *bdp,
int *flags,
struct xfs_mount_args *args)
{
struct vfs *vfsp = bhvtovfs(bdp);
xfs_mount_t *mp = XFS_BHVTOM(bdp);
int pincount, error;
if (args->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
else
mp->m_flags &= ~XFS_MOUNT_NOATIME;
if (!(vfsp->vfs_flag & VFS_RDONLY)) {
VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
}
if (*flags & MS_RDONLY) {
pagebuf_delwri_flush(mp->m_ddev_targp, 0, NULL);
xfs_finish_reclaim_all(mp);
do {
VFS_SYNC(vfsp, SYNC_ATTR|SYNC_WAIT, NULL, error);
pagebuf_delwri_flush(mp->m_ddev_targp, PBDF_WAIT,
&pincount);
} while (pincount);
/* Ok now write out an unmount record */
xfs_log_unmount_write(mp);
xfs_unmountfs_writesb(mp);
vfsp->vfs_flag |= VFS_RDONLY;
} else {
vfsp->vfs_flag &= ~VFS_RDONLY;
}
return 0;
}
/*
* xfs_unmount_flush implements a set of flush operation on special
* inodes, which are needed as a separate set of operations so that
......@@ -1495,12 +1534,246 @@ xfs_vget(
}
#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
#define MNTOPT_LOGDEV "logdev" /* log device */
#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
#define MNTOPT_NOLOGFLUSH "nologflush" /* don't hard flush on log writes */
#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
int
xfs_parseargs(
struct bhv_desc *bhv,
char *options,
struct xfs_mount_args *args,
int update)
{
struct vfs *vfsp = bhvtovfs(bhv);
char *this_char, *value, *eov;
int dsunit, dswidth, vol_dsunit, vol_dswidth;
int iosize;
if (!options)
return 0;
iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
while ((this_char = strsep(&options, ",")) != NULL) {
if (!*this_char)
continue;
if ((value = strchr(this_char, '=')) != NULL)
*value++ = 0;
if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGBUFS);
return -EINVAL;
}
args->logbufs = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
int last, in_kilobytes = 0;
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGBSIZE);
return -EINVAL;
}
last = strlen(value) - 1;
if (value[last] == 'K' || value[last] == 'k') {
in_kilobytes = 1;
value[last] = '\0';
}
args->logbufsize = simple_strtoul(value, &eov, 10);
if (in_kilobytes)
args->logbufsize <<= 10;
} else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_LOGDEV);
return -EINVAL;
}
strncpy(args->logname, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_MTPT)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_MTPT);
return -EINVAL;
}
strncpy(args->mtpt, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_RTDEV)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_RTDEV);
return -EINVAL;
}
strncpy(args->rtname, value, MAXNAMELEN);
} else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_BIOSIZE);
return -EINVAL;
}
iosize = simple_strtoul(value, &eov, 10);
args->flags |= XFSMNT_IOSIZE;
args->iosizelog = (uint8_t) iosize;
} else if (!strcmp(this_char, MNTOPT_WSYNC)) {
args->flags |= XFSMNT_WSYNC;
} else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
args->flags |= XFSMNT_OSYNCISOSYNC;
} else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
args->flags |= XFSMNT_NORECOVERY;
} else if (!strcmp(this_char, MNTOPT_INO64)) {
args->flags |= XFSMNT_INO64;
#ifndef XFS_BIG_FILESYSTEMS
printk("XFS: %s option not allowed on this system\n",
MNTOPT_INO64);
return -EINVAL;
#endif
} else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
args->flags |= XFSMNT_NOALIGN;
} else if (!strcmp(this_char, MNTOPT_SUNIT)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_SUNIT);
return -EINVAL;
}
dsunit = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
if (!value || !*value) {
printk("XFS: %s option requires an argument\n",
MNTOPT_SWIDTH);
return -EINVAL;
}
dswidth = simple_strtoul(value, &eov, 10);
} else if (!strcmp(this_char, MNTOPT_NOUUID)) {
args->flags |= XFSMNT_NOUUID;
} else if (!strcmp(this_char, MNTOPT_NOLOGFLUSH)) {
args->flags |= XFSMNT_NOLOGFLUSH;
} else if (!strcmp(this_char, "osyncisdsync")) {
/* no-op, this is now the default */
printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
} else if (!strcmp(this_char, "irixsgid")) {
printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
} else {
printk("XFS: unknown mount option [%s].\n", this_char);
return -EINVAL;
}
}
if (args->flags & XFSMNT_NORECOVERY) {
if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
printk("XFS: no-recovery mounts must be read-only.\n");
return -EINVAL;
}
}
if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
printk(
"XFS: sunit and swidth options incompatible with the noalign option\n");
return -EINVAL;
}
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
printk("XFS: sunit and swidth must be specified together\n");
return -EINVAL;
}
if (dsunit && (dswidth % dsunit != 0)) {
printk(
"XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
dswidth, dsunit);
return -EINVAL;
}
if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
if (dsunit) {
args->sunit = dsunit;
args->flags |= XFSMNT_RETERR;
} else {
args->sunit = vol_dsunit;
}
dswidth ? (args->swidth = dswidth) :
(args->swidth = vol_dswidth);
} else {
args->sunit = args->swidth = 0;
}
return 0;
}
int
xfs_showargs(
struct bhv_desc *bhv,
struct seq_file *m)
{
static struct proc_xfs_info {
int flag;
char *str;
} xfs_info[] = {
/* the few simple ones we can get from the mount struct */
{ XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
{ XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
{ XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
{ XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
{ 0, NULL }
};
struct proc_xfs_info *xfs_infop;
struct xfs_mount *mp = XFS_BHVTOM(bhv);
char b[BDEVNAME_SIZE];
for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
if (mp->m_flags & xfs_infop->flag)
seq_puts(m, xfs_infop->str);
}
if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
seq_printf(m, "," MNTOPT_BIOSIZE "=%d", mp->m_writeio_log);
if (mp->m_logbufs > 0)
seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
if (mp->m_logbsize > 0)
seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
if (mp->m_ddev_targp->pbr_dev != mp->m_logdev_targp->pbr_dev)
seq_printf(m, "," MNTOPT_LOGDEV "=%s",
bdevname(mp->m_logdev_targp->pbr_bdev, b));
if (mp->m_rtdev_targp &&
mp->m_ddev_targp->pbr_dev != mp->m_rtdev_targp->pbr_dev)
seq_printf(m, "," MNTOPT_RTDEV "=%s",
bdevname(mp->m_rtdev_targp->pbr_bdev, b));
if (mp->m_dalign > 0)
seq_printf(m, "," MNTOPT_SUNIT "=%d",
(int)XFS_FSB_TO_BB(mp, mp->m_dalign));
if (mp->m_swidth > 0)
seq_printf(m, "," MNTOPT_SWIDTH "=%d",
(int)XFS_FSB_TO_BB(mp, mp->m_swidth));
return 0;
}
vfsops_t xfs_vfsops = {
BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
.vfs_parseargs = xfs_parseargs,
.vfs_showargs = xfs_showargs,
.vfs_mount = xfs_mount,
.vfs_unmount = xfs_unmount,
.vfs_mntupdate = xfs_mntupdate,
.vfs_root = xfs_root,
.vfs_statvfs = xfs_statvfs,
.vfs_sync = xfs_sync,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7