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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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363275216c
Despite my earlier careful search, there was a recursive lock left in the deallocation code. This removes it. It also should speed up deallocation be reducing the number of locking operations which take place by using two "try lock" operations on the two locks involved in inode deallocation which allows us to grab the locks out of order (compared with NFS which grabs the inode lock first and the iopen lock later). It is ok for us to fail while doing this since if it does fail it means that someone else is still using the inode and thus it wouldn't be possible to deallocate anyway. This fixes the bug reported to me by Rob Kenna. Cc: Rob Kenna <rkenna@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2005 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 v.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_di.di_mode);
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}
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void gfs2_inode_attr_in(struct gfs2_inode *ip);
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void gfs2_inode_attr_out(struct gfs2_inode *ip);
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struct inode *gfs2_ip2v_lookup(struct gfs2_inode *ip);
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struct inode *gfs2_ip2v(struct gfs2_inode *ip);
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struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum *inum);
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void gfs2_inode_min_init(struct gfs2_inode *ip, unsigned int type);
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int gfs2_inode_refresh(struct gfs2_inode *ip);
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int gfs2_inode_get(struct gfs2_glock *i_gl,
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const struct gfs2_inum *inum, int create,
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struct gfs2_inode **ipp);
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void gfs2_inode_hold(struct gfs2_inode *ip);
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void gfs2_inode_put(struct gfs2_inode *ip);
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void gfs2_inode_destroy(struct gfs2_inode *ip, int unlock);
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int gfs2_inode_dealloc(struct gfs2_sbd *sdp, struct gfs2_unlinked *ul);
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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, struct qstr *name, int is_root,
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struct nameidata *nd);
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struct inode *gfs2_createi(struct gfs2_holder *ghs, struct qstr *name,
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unsigned int mode);
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int gfs2_unlinki(struct gfs2_inode *dip, struct qstr *name,
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struct gfs2_inode *ip, struct gfs2_unlinked *ul);
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int gfs2_rmdiri(struct gfs2_inode *dip, struct qstr *name,
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struct gfs2_inode *ip, struct gfs2_unlinked *ul);
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int gfs2_unlink_ok(struct gfs2_inode *dip, 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_glock_nq_m_atime(unsigned int num_gh, struct gfs2_holder *ghs);
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void gfs2_try_toss_vnode(struct gfs2_inode *ip);
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int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
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int gfs2_repermission(struct inode *inode, int mask, struct nameidata *nd);
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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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