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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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43
fs/xfs/xfs_dmops.c
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@ -19,18 +19,51 @@
#include "xfs_fs.h"
#include "xfs_types.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_inum.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_clnt.h"
xfs_dmops_t xfs_dmcore_stub = {
static struct xfs_dmops xfs_dmcore_stub = {
.xfs_send_data = (xfs_send_data_t)fs_nosys,
.xfs_send_mmap = (xfs_send_mmap_t)fs_noerr,
.xfs_send_destroy = (xfs_send_destroy_t)fs_nosys,
.xfs_send_namesp = (xfs_send_namesp_t)fs_nosys,
.xfs_send_unmount = (xfs_send_unmount_t)fs_noval,
.xfs_send_mount = (xfs_send_mount_t)fs_nosys,
.xfs_send_unmount = (xfs_send_unmount_t)fs_noerr,
};
int
xfs_dmops_get(struct xfs_mount *mp, struct xfs_mount_args *args)
{
if (args->flags & XFSMNT_DMAPI) {
struct xfs_dmops *ops;
ops = symbol_get(xfs_dmcore_xfs);
if (!ops) {
request_module("xfs_dmapi");
ops = symbol_get(xfs_dmcore_xfs);
}
if (!ops) {
cmn_err(CE_WARN, "XFS: no dmapi support available.");
return EINVAL;
}
mp->m_dm_ops = ops;
} else {
mp->m_dm_ops = &xfs_dmcore_stub;
}
return 0;
}
void
xfs_dmops_put(struct xfs_mount *mp)
{
if (mp->m_dm_ops != &xfs_dmcore_stub)
symbol_put(xfs_dmcore_xfs);
}