dbb7cae2a3
This patch cleans up the inode number handling code. The main difference is that instead of looking up the inodes using a struct gfs2_inum_host we now use just the no_addr member of this structure. The tests relating to no_formal_ino can then be done by the calling code. This has advantages in that we want to do different things in different code paths if the no_formal_ino doesn't match. In the NFS patch we want to return -ESTALE, but in the ->lookup() path, its a bug in the fs if the no_formal_ino doesn't match and thus we can withdraw in this case. In order to later fix bz #201012, we need to be able to look up an inode without knowing no_formal_ino, as the only information that is known to us is the on-disk location of the inode in question. This patch will also help us to fix bz #236099 at a later date by cleaning up a lot of the code in that area. There are no user visible changes as a result of this patch and there are no changes to the on-disk format either. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#ifndef __INODE_DOT_H__
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#define __INODE_DOT_H__
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static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
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{
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return !ip->i_di.di_height;
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}
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static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
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{
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return ip->i_di.di_flags & GFS2_DIF_JDATA;
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}
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static inline int gfs2_is_dir(const struct gfs2_inode *ip)
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{
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return S_ISDIR(ip->i_inode.i_mode);
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}
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static inline void gfs2_set_inode_blocks(struct inode *inode)
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{
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struct gfs2_inode *ip = GFS2_I(inode);
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inode->i_blocks = ip->i_di.di_blocks <<
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(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
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}
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static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
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u64 no_formal_ino)
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{
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return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
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}
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void gfs2_inode_attr_in(struct gfs2_inode *ip);
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struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned type);
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struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
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int gfs2_inode_refresh(struct gfs2_inode *ip);
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int gfs2_dinode_dealloc(struct gfs2_inode *inode);
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int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
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struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
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int is_root, struct nameidata *nd);
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struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
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unsigned int mode, dev_t dev);
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int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
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struct gfs2_inode *ip);
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int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
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const struct gfs2_inode *ip);
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int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to);
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int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
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int gfs2_glock_nq_atime(struct gfs2_holder *gh);
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int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
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struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
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#endif /* __INODE_DOT_H__ */
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