1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 5 */ 6 7 #ifndef __LOG_DOT_H__ 8 #define __LOG_DOT_H__ 9 10 #include <linux/list.h> 11 #include <linux/spinlock.h> 12 #include <linux/writeback.h> 13 #include "incore.h" 14 #include "inode.h" 15 16 /** 17 * gfs2_log_lock - acquire the right to mess with the log manager 18 * @sdp: the filesystem 19 * 20 */ 21 22 static inline void gfs2_log_lock(struct gfs2_sbd *sdp) 23 __acquires(&sdp->sd_log_lock) 24 { 25 spin_lock(&sdp->sd_log_lock); 26 } 27 28 /** 29 * gfs2_log_unlock - release the right to mess with the log manager 30 * @sdp: the filesystem 31 * 32 */ 33 34 static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) 35 __releases(&sdp->sd_log_lock) 36 { 37 spin_unlock(&sdp->sd_log_lock); 38 } 39 40 static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, 41 unsigned int value) 42 { 43 if (++value == sdp->sd_jdesc->jd_blocks) { 44 value = 0; 45 } 46 sdp->sd_log_head = sdp->sd_log_tail = value; 47 } 48 49 static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) 50 { 51 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 52 53 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp)) 54 return; 55 56 if (!test_bit(GIF_ORDERED, &ip->i_flags)) { 57 spin_lock(&sdp->sd_ordered_lock); 58 if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags)) 59 list_add(&ip->i_ordered, &sdp->sd_log_ordered); 60 spin_unlock(&sdp->sd_ordered_lock); 61 } 62 } 63 64 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); 65 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct); 66 67 extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); 68 extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); 69 extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 70 u64 seq, u32 tail, u32 lblock, u32 flags, 71 int op_flags); 72 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, 73 u32 type); 74 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); 75 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); 76 77 extern int gfs2_logd(void *data); 78 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); 79 extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl); 80 extern void gfs2_write_revokes(struct gfs2_sbd *sdp); 81 82 #endif /* __LOG_DOT_H__ */ 83