Commit e13a73f0 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Nathan Scott
Browse files

[XFS] Write log dummy record when freezing filesystem 



SGI-PV: 945483
SGI-Modid: xfs-linux-melb:xfs-kern:202638a

Signed-off-by: default avatarChristoph Hellwig <hch@sgi.com>
Signed-off-by: default avatarNathan Scott <nathans@sgi.com>
parent 1df84c93

fs/xfs/xfs_fsops.c

+26 −0
Original line number Diff line number Diff line
@@ -540,6 +540,32 @@ xfs_reserve_blocks( 
	return(0);

}



void

xfs_fs_log_dummy(xfs_mount_t *mp)

{

	xfs_trans_t *tp;

	xfs_inode_t *ip;





	tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);

	atomic_inc(&mp->m_active_trans);

	if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) {

		xfs_trans_cancel(tp, 0);

		return;

	}



	ip = mp->m_rootip;

	xfs_ilock(ip, XFS_ILOCK_EXCL);



	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);

	xfs_trans_ihold(tp, ip);

	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);

	xfs_trans_set_sync(tp);

	xfs_trans_commit(tp, 0, NULL);



	xfs_iunlock(ip, XFS_ILOCK_EXCL);

}



int

xfs_fs_goingdown(

	xfs_mount_t	*mp,

fs/xfs/xfs_fsops.h

+1 −0
Original line number Diff line number Diff line
@@ -25,5 +25,6 @@ extern int xfs_fs_counts(xfs_mount_t *mp, xfs_fsop_counts_t *cnt); 
extern int xfs_reserve_blocks(xfs_mount_t *mp, __uint64_t *inval,

				xfs_fsop_resblks_t *outval);

extern int xfs_fs_goingdown(xfs_mount_t *mp, __uint32_t inflags);

extern void xfs_fs_log_dummy(xfs_mount_t *mp);



#endif	/* __XFS_FSOPS_H__ */

fs/xfs/xfs_vfsops.c

+2 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ 
#include "xfs_acl.h"

#include "xfs_attr.h"

#include "xfs_clnt.h"

#include "xfs_fsops.h"



STATIC int xfs_sync(bhv_desc_t *, int, cred_t *);
@@ -1967,6 +1968,7 @@ xfs_freeze( 
	/* Push the superblock and write an unmount record */

	xfs_log_unmount_write(mp);

	xfs_unmountfs_writesb(mp);

	xfs_fs_log_dummy(mp);

}