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[XFS] remove dependency of the dmapi module on behaviors

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Mount options are now parsed by the main XFS module and rejected if dmapi
support is not available, and there is a new dm operation to send the
mount event.

SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29502a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
Christoph Hellwig
2007-08-29 11:59:36 +10:00
committed by Tim Shimmin
parent f541d270db
commit 293688ec42
6 changed files with 82 additions and 40 deletions
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31
fs/xfs/xfs_vfsops.c
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@@ -326,6 +326,8 @@ xfs_start_flags(
if (ap->flags2 & XFSMNT2_FILESTREAMS)
mp->m_flags |= XFS_MOUNT_FILESTREAMS;
if (ap->flags & XFSMNT_DMAPI)
vfs->vfs_flag |= VFS_DMI;
return 0;
}
@@ -430,11 +432,13 @@ xfs_mount(
ddev = vfsp->vfs_super->s_bdev;
logdev = rtdev = NULL;
error = xfs_dmops_get(mp, args);
if (error)
return error;
/*
* Setup xfs_mount function vectors from available behaviors
*/
p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM);
mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub;
p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM);
mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub;
p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO);
@@ -537,6 +541,8 @@ xfs_mount(
if (error)
goto error2;
XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname);
return 0;
error2:
@@ -550,6 +556,7 @@ error1:
xfs_binval(mp->m_rtdev_targp);
error0:
xfs_unmountfs_close(mp, credp);
xfs_dmops_put(mp);
return error;
}
@@ -640,6 +647,7 @@ out:
* and free the super block buffer & mount structures.
*/
xfs_unmountfs(mp, credp);
xfs_dmops_put(mp);
kmem_free(mp, sizeof(xfs_mount_t));
}
@@ -1688,6 +1696,9 @@ xfs_vget(
#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
#define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
#define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
#define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */
STATIC unsigned long
suffix_strtoul(char *s, char **endp, unsigned int base)
@@ -1878,6 +1889,12 @@ xfs_parseargs(
args->flags &= ~XFSMNT_ATTR2;
} else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
args->flags2 |= XFSMNT2_FILESTREAMS;
} else if (!strcmp(this_char, MNTOPT_DMAPI)) {
args->flags |= XFSMNT_DMAPI;
} else if (!strcmp(this_char, MNTOPT_XDSM)) {
args->flags |= XFSMNT_DMAPI;
} else if (!strcmp(this_char, MNTOPT_DMI)) {
args->flags |= XFSMNT_DMAPI;
} else if (!strcmp(this_char, "ihashsize")) {
cmn_err(CE_WARN,
"XFS: ihashsize no longer used, option is deprecated.");
@@ -1909,6 +1926,12 @@ xfs_parseargs(
return EINVAL;
}
if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') {
printk("XFS: %s option needs the mount point option as well\n",
MNTOPT_DMAPI);
return EINVAL;
}
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
cmn_err(CE_WARN,
"XFS: sunit and swidth must be specified together");
@@ -2002,6 +2025,9 @@ xfs_showargs(
if (vfsp->vfs_flag & VFS_GRPID)
seq_printf(m, "," MNTOPT_GRPID);
if (vfsp->vfs_flag & VFS_DMI)
seq_puts(m, "," MNTOPT_DMAPI);
return 0;
}
@@ -2032,7 +2058,6 @@ bhv_vfsops_t xfs_vfsops = {
.vfs_statvfs = xfs_statvfs,
.vfs_sync = xfs_sync,
.vfs_vget = xfs_vget,
.vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
.vfs_quotactl = (vfs_quotactl_t)fs_nosys,
.vfs_init_vnode = xfs_initialize_vnode,
.vfs_force_shutdown = xfs_do_force_shutdown,