forked from luck/tmp_suning_uos_patched
12c3f05c7b
inode32/inode64 allocator behavior with respect to mount, remount and growfs is a little tricky. The inode32 mount option should only enable the inode32 allocator heuristics if the filesystem is large enough for 64-bit inodes to exist. Today, it has this behavior on the initial mount, but a remount with inode32 unconditionally changes the allocation heuristics, even for a small fs. Also, an inode32 mounted small filesystem should transition to the inode32 allocator if the filesystem is subsequently grown to a sufficient size. Today that does not happen. This patch consolidates xfs_set_inode32 and xfs_set_inode64 into a single new function, and moves the "is the maximum inode number big enough to matter" test into that function, so it doesn't rely on the caller to get it right - which remount did not do, previously. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SUPER_H__
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#define __XFS_SUPER_H__
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#include <linux/exportfs.h>
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#ifdef CONFIG_XFS_QUOTA
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extern int xfs_qm_init(void);
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extern void xfs_qm_exit(void);
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#else
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# define xfs_qm_init() (0)
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# define xfs_qm_exit() do { } while (0)
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#endif
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#ifdef CONFIG_XFS_POSIX_ACL
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# define XFS_ACL_STRING "ACLs, "
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# define set_posix_acl_flag(sb) ((sb)->s_flags |= MS_POSIXACL)
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#else
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# define XFS_ACL_STRING
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# define set_posix_acl_flag(sb) do { } while (0)
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#endif
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#define XFS_SECURITY_STRING "security attributes, "
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#ifdef CONFIG_XFS_RT
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# define XFS_REALTIME_STRING "realtime, "
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#else
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# define XFS_REALTIME_STRING
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#endif
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#ifdef DEBUG
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# define XFS_DBG_STRING "debug"
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#else
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# define XFS_DBG_STRING "no debug"
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#endif
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#define XFS_VERSION_STRING "SGI XFS"
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#define XFS_BUILD_OPTIONS XFS_ACL_STRING \
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XFS_SECURITY_STRING \
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XFS_REALTIME_STRING \
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XFS_DBG_STRING /* DBG must be last */
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struct xfs_inode;
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struct xfs_mount;
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struct xfs_buftarg;
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struct block_device;
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extern __uint64_t xfs_max_file_offset(unsigned int);
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extern void xfs_flush_inodes(struct xfs_mount *mp);
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extern void xfs_blkdev_issue_flush(struct xfs_buftarg *);
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extern xfs_agnumber_t xfs_set_inode_alloc(struct xfs_mount *,
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xfs_agnumber_t agcount);
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extern const struct export_operations xfs_export_operations;
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extern const struct xattr_handler *xfs_xattr_handlers[];
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extern const struct quotactl_ops xfs_quotactl_operations;
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extern void xfs_reinit_percpu_counters(struct xfs_mount *mp);
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#define XFS_M(sb) ((struct xfs_mount *)((sb)->s_fs_info))
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#endif /* __XFS_SUPER_H__ */
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