log.c (22164fbe274c2dd96d2887fe121896d321000a61) log.c (2e9eeaa1175112ac494ba3c2ea4b71b1febeb6ab)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
5 */
6
7#include <linux/sched.h>
8#include <linux/slab.h>

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32#include "trace_gfs2.h"
33
34static void gfs2_log_shutdown(struct gfs2_sbd *sdp);
35
36/**
37 * gfs2_struct2blk - compute stuff
38 * @sdp: the filesystem
39 * @nstruct: the number of structures
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
5 */
6
7#include <linux/sched.h>
8#include <linux/slab.h>

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32#include "trace_gfs2.h"
33
34static void gfs2_log_shutdown(struct gfs2_sbd *sdp);
35
36/**
37 * gfs2_struct2blk - compute stuff
38 * @sdp: the filesystem
39 * @nstruct: the number of structures
40 * @ssize: the size of the structures
41 *
42 * Compute the number of log descriptor blocks needed to hold a certain number
43 * of structures of a certain size.
44 *
45 * Returns: the number of blocks needed (minimum is always 1)
46 */
47
40 *
41 * Compute the number of log descriptor blocks needed to hold a certain number
42 * of structures of a certain size.
43 *
44 * Returns: the number of blocks needed (minimum is always 1)
45 */
46
48unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
49 unsigned int ssize)
47unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct)
50{
51 unsigned int blks;
52 unsigned int first, second;
53
54 blks = 1;
48{
49 unsigned int blks;
50 unsigned int first, second;
51
52 blks = 1;
55 first = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / ssize;
53 first = sdp->sd_ldptrs;
56
57 if (nstruct > first) {
54
55 if (nstruct > first) {
58 second = (sdp->sd_sb.sb_bsize -
59 sizeof(struct gfs2_meta_header)) / ssize;
56 second = sdp->sd_inptrs;
60 blks += DIV_ROUND_UP(nstruct - first, second);
61 }
62
63 return blks;
64}
65
66/**
67 * gfs2_remove_from_ail - Remove an entry from the ail lists, updating counters

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468 dbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm;
469 reserved = mbuf + dbuf;
470 /* Account for header blocks */
471 reserved += DIV_ROUND_UP(mbuf, buf_limit(sdp));
472 reserved += DIV_ROUND_UP(dbuf, databuf_limit(sdp));
473 }
474
475 if (sdp->sd_log_commited_revoke > 0)
57 blks += DIV_ROUND_UP(nstruct - first, second);
58 }
59
60 return blks;
61}
62
63/**
64 * gfs2_remove_from_ail - Remove an entry from the ail lists, updating counters

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465 dbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm;
466 reserved = mbuf + dbuf;
467 /* Account for header blocks */
468 reserved += DIV_ROUND_UP(mbuf, buf_limit(sdp));
469 reserved += DIV_ROUND_UP(dbuf, databuf_limit(sdp));
470 }
471
472 if (sdp->sd_log_commited_revoke > 0)
476 reserved += gfs2_struct2blk(sdp, sdp->sd_log_commited_revoke,
477 sizeof(u64));
473 reserved += gfs2_struct2blk(sdp, sdp->sd_log_commited_revoke);
478 /* One for the overall header */
479 if (reserved)
480 reserved++;
481 return reserved;
482}
483
484static unsigned int current_tail(struct gfs2_sbd *sdp)
485{

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475 if (reserved)
476 reserved++;
477 return reserved;
478}
479
480static unsigned int current_tail(struct gfs2_sbd *sdp)
481{

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