5509826f1e
Bugzilla 215088 Fix deadlock in gfs2_change_nlink() while installing RHEL5 into GFS2 partition. The gfs2_rename() apparently needs block allocation for the new name (into the directory) where it requires rg locks. At the same time, while updating the nlink count for the replaced file, gfs2_change_nlink() tries to return the inode meta-data back to resource group where it needs rg locks too. Our logic doesn't allow process to acquire these locks recursively by the same process (RHEL installer) that results a BUG call. This only happens within rename code path and only if the destination file exists before the rename operation. Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
60 lines
2.1 KiB
C
60 lines
2.1 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(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(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(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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void gfs2_inode_attr_in(struct gfs2_inode *ip);
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struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type);
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struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum);
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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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int gfs2_change_nlink_i(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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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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