forked from luck/tmp_suning_uos_patched
1a0eae8848
This patch fixes a couple gfs2 problems with the reclaiming of unlinked dinodes. First, there were a couple of livelocks where everything would come to a halt waiting for a glock that was seemingly held by a process that no longer existed. In fact, the process did exist, it just had the wrong pid number in the holder information. Second, there was a lock ordering problem between inode locking and glock locking. Third, glock/inode contention could sometimes cause inodes to be improperly marked invalid by iget_failed. Signed-off-by: Bob Peterson <rpeterso@redhat.com>
134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
/*
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef __INODE_DOT_H__
|
|
#define __INODE_DOT_H__
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/buffer_head.h>
|
|
#include <linux/mm.h>
|
|
#include "util.h"
|
|
|
|
extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
|
|
extern int gfs2_internal_read(struct gfs2_inode *ip,
|
|
struct file_ra_state *ra_state,
|
|
char *buf, loff_t *pos, unsigned size);
|
|
extern void gfs2_set_aops(struct inode *inode);
|
|
|
|
static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
|
|
{
|
|
return !ip->i_height;
|
|
}
|
|
|
|
static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
|
|
{
|
|
return ip->i_diskflags & GFS2_DIF_JDATA;
|
|
}
|
|
|
|
static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
|
|
{
|
|
const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
|
|
return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
|
|
}
|
|
|
|
static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
|
|
{
|
|
const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
|
|
return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
|
|
}
|
|
|
|
static inline int gfs2_is_dir(const struct gfs2_inode *ip)
|
|
{
|
|
return S_ISDIR(ip->i_inode.i_mode);
|
|
}
|
|
|
|
static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
|
|
{
|
|
inode->i_blocks = blocks <<
|
|
(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
|
|
}
|
|
|
|
static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
|
|
{
|
|
return inode->i_blocks >>
|
|
(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
|
|
}
|
|
|
|
static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
|
|
{
|
|
gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
|
|
change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
|
|
inode->i_blocks += change;
|
|
}
|
|
|
|
static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
|
|
u64 no_formal_ino)
|
|
{
|
|
return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
|
|
}
|
|
|
|
static inline void gfs2_inum_out(const struct gfs2_inode *ip,
|
|
struct gfs2_dirent *dent)
|
|
{
|
|
dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
|
|
dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
|
|
}
|
|
|
|
|
|
extern void gfs2_set_iop(struct inode *inode);
|
|
extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
|
|
u64 no_addr, u64 no_formal_ino);
|
|
extern int gfs2_unlinked_inode_lookup(struct super_block *sb, u64 no_addr,
|
|
struct inode **inode);
|
|
extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
|
|
|
|
extern int gfs2_inode_refresh(struct gfs2_inode *ip);
|
|
|
|
extern int gfs2_dinode_dealloc(struct gfs2_inode *inode);
|
|
extern int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
|
|
extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
|
|
int is_root);
|
|
extern struct inode *gfs2_createi(struct gfs2_holder *ghs,
|
|
const struct qstr *name,
|
|
unsigned int mode, dev_t dev);
|
|
extern int gfs2_permission(struct inode *inode, int mask);
|
|
extern int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
|
|
extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
|
|
extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
|
|
extern void gfs2_dinode_print(const struct gfs2_inode *ip);
|
|
|
|
extern const struct inode_operations gfs2_file_iops;
|
|
extern const struct inode_operations gfs2_dir_iops;
|
|
extern const struct inode_operations gfs2_symlink_iops;
|
|
extern const struct file_operations gfs2_file_fops_nolock;
|
|
extern const struct file_operations gfs2_dir_fops_nolock;
|
|
|
|
extern void gfs2_set_inode_flags(struct inode *inode);
|
|
|
|
#ifdef CONFIG_GFS2_FS_LOCKING_DLM
|
|
extern const struct file_operations gfs2_file_fops;
|
|
extern const struct file_operations gfs2_dir_fops;
|
|
|
|
static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
|
|
{
|
|
return sdp->sd_args.ar_localflocks;
|
|
}
|
|
#else /* Single node only */
|
|
#define gfs2_file_fops gfs2_file_fops_nolock
|
|
#define gfs2_dir_fops gfs2_dir_fops_nolock
|
|
|
|
static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
|
|
{
|
|
return 1;
|
|
}
|
|
#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
|
|
|
|
#endif /* __INODE_DOT_H__ */
|
|
|