luck/tmp_suning_uos_patched
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[XFS] kill the vfs_fsid and vfs_altfsid members in struct bhv_vfs

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vfs_altfsid was just a pointer to mp->m_fixedfsid so we can trivially
replace it with the latter. vfs_fsid also was identical to m_fixedfsid
through rather obfuscated ways so we can kill it as well and simply its
only user.

SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29506a

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 2007-08-30 17:20:53 +10:00 committed by Tim Shimmin
parent 745f691912
commit 0ce4cfd4f7
5 changed files with 12 additions and 41 deletions
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4
fs/xfs/linux-2.6/xfs_ioctl.c
View File

@ -138,7 +138,7 @@ xfs_find_handle(
vp = vn_from_inode(inode);
/* now we can grab the fsid */
memcpy(&handle.ha_fsid, XFS_MTOVFS(XFS_I(inode)->i_mount)->vfs_altfsid,
memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid,
sizeof(xfs_fsid_t));
hsize = sizeof(xfs_fsid_t);
@ -966,7 +966,7 @@ xfs_ioctl(
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
error = xfs_errortag_clearall(mp);
error = xfs_errortag_clearall(mp, 1);
return -error;
default:

2
fs/xfs/linux-2.6/xfs_vfs.h
View File

@ -44,8 +44,6 @@ typedef struct bhv_vfs_sync_work {
typedef struct bhv_vfs {
struct xfs_mount *vfs_mount;
u_int vfs_flag; /* flags */
xfs_fsid_t vfs_fsid; /* file system ID */
xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */
struct super_block *vfs_super; /* generic superblock pointer */
struct task_struct *vfs_sync_task; /* generalised sync thread */
bhv_vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */

20
fs/xfs/xfs_error.c
View File

@ -133,10 +133,14 @@ xfs_errortag_add(int error_tag, xfs_mount_t *mp)
}
int
xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud)
xfs_errortag_clearall(xfs_mount_t *mp, int loud)
{
int i;
int64_t fsid;
int cleared = 0;
int i;
memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
@ -155,20 +159,10 @@ xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud)
if (loud || cleared)
cmn_err(CE_WARN,
"Cleared all XFS error tags for filesystem \"%s\"",
fsname);
mp->m_fsname);
return 0;
}
int
xfs_errortag_clearall(xfs_mount_t *mp)
{
int64_t fsid;
memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
return xfs_errortag_clearall_umount(fsid, mp->m_fsname, 1);
}
#endif /* DEBUG || INDUCE_IO_ERROR */
static void

5
fs/xfs/xfs_error.h
View File

@ -144,12 +144,11 @@ extern void xfs_error_test_init(void);
#endif /* __ANSI_CPP__ */
extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
extern int xfs_errortag_clearall(xfs_mount_t *mp);
extern int xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud);
extern int xfs_errortag_clearall(xfs_mount_t *mp, int loud);
#else
#define XFS_TEST_ERROR(expr, mp, tag, rf) (expr)
#define xfs_errortag_add(tag, mp) (ENOSYS)
#define xfs_errortag_clearall(mp) (ENOSYS)
#define xfs_errortag_clearall(mp, loud) (ENOSYS)
#endif /* (DEBUG || INDUCE_IO_ERROR) */
/*

22
fs/xfs/xfs_mount.c
View File

@ -875,14 +875,11 @@ xfs_mountfs(
*/
if ((mfsi_flags & XFS_MFSI_SECOND) == 0 &&
(mp->m_flags & XFS_MOUNT_NOUUID) == 0) {
__uint64_t ret64;
if (xfs_uuid_mount(mp)) {
error = XFS_ERROR(EINVAL);
goto error1;
}
uuid_mounted=1;
ret64 = uuid_hash64(&sbp->sb_uuid);
memcpy(&vfsp->vfs_fsid, &ret64, sizeof(ret64));
}
/*
@ -1007,16 +1004,6 @@ xfs_mountfs(
*/
uuid_getnodeuniq(&sbp->sb_uuid, mp->m_fixedfsid);
/*
* The vfs structure needs to have a file system independent
* way of checking for the invariant file system ID. Since it
* can't look at mount structures it has a pointer to the data
* in the mount structure.
*
* File systems that don't support user level file handles (i.e.
* all of them except for XFS) will leave vfs_altfsid as NULL.
*/
vfsp->vfs_altfsid = (xfs_fsid_t *)mp->m_fixedfsid;
mp->m_dmevmask = 0; /* not persistent; set after each mount */
xfs_dir_mount(mp);
@ -1206,9 +1193,6 @@ int
xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
{
struct bhv_vfs *vfsp = XFS_MTOVFS(mp);
#if defined(DEBUG) || defined(INDUCE_IO_ERROR)
int64_t fsid;
#endif
__uint64_t resblks;
/*
@ -1272,11 +1256,7 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
xfs_uuid_unmount(mp);
#if defined(DEBUG) || defined(INDUCE_IO_ERROR)
/*
* clear all error tags on this filesystem
*/
memcpy(&fsid, &vfsp->vfs_fsid, sizeof(int64_t));
xfs_errortag_clearall_umount(fsid, mp->m_fsname, 0);
xfs_errortag_clearall(mp, 0);
#endif
XFS_IODONE(vfsp);
xfs_mount_free(mp);