ed4878e8a4
The previous patch I wrote for reclaiming unlinked dinodes had some shortcomings and did not prevent all hangs. This version is much cleaner and more logical, and has passed very difficult testing. Sorry for the churn. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
133 lines
4.2 KiB
C
133 lines
4.2 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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#include <linux/fs.h>
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#include <linux/buffer_head.h>
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#include <linux/mm.h>
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#include "util.h"
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extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
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extern int gfs2_internal_read(struct gfs2_inode *ip,
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struct file_ra_state *ra_state,
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char *buf, loff_t *pos, unsigned size);
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extern void gfs2_set_aops(struct inode *inode);
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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_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_diskflags & GFS2_DIF_JDATA;
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}
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static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
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{
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const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
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}
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static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
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{
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const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
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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, u64 blocks)
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{
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inode->i_blocks = 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 u64 gfs2_get_inode_blocks(const struct inode *inode)
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{
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return inode->i_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 void gfs2_add_inode_blocks(struct inode *inode, s64 change)
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{
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gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
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change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
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inode->i_blocks += change;
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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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static inline void gfs2_inum_out(const struct gfs2_inode *ip,
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struct gfs2_dirent *dent)
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{
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dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
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dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
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}
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extern void gfs2_set_iop(struct inode *inode);
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extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
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u64 no_addr, u64 no_formal_ino);
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extern void gfs2_process_unlinked_inode(struct super_block *sb, u64 no_addr);
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extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
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extern int gfs2_inode_refresh(struct gfs2_inode *ip);
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extern int gfs2_dinode_dealloc(struct gfs2_inode *inode);
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extern int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
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extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
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int is_root);
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extern struct inode *gfs2_createi(struct gfs2_holder *ghs,
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const struct qstr *name,
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unsigned int mode, dev_t dev);
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extern int gfs2_permission(struct inode *inode, int mask);
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extern int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
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extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
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extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
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extern void gfs2_dinode_print(const struct gfs2_inode *ip);
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extern const struct inode_operations gfs2_file_iops;
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extern const struct inode_operations gfs2_dir_iops;
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extern const struct inode_operations gfs2_symlink_iops;
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extern const struct file_operations gfs2_file_fops_nolock;
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extern const struct file_operations gfs2_dir_fops_nolock;
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extern void gfs2_set_inode_flags(struct inode *inode);
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#ifdef CONFIG_GFS2_FS_LOCKING_DLM
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extern const struct file_operations gfs2_file_fops;
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extern const struct file_operations gfs2_dir_fops;
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static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
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{
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return sdp->sd_args.ar_localflocks;
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}
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#else /* Single node only */
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#define gfs2_file_fops gfs2_file_fops_nolock
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#define gfs2_dir_fops gfs2_dir_fops_nolock
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static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
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{
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return 1;
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}
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#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
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#endif /* __INODE_DOT_H__ */
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