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[GFS2] Move logging code into log.c (mostly)
This moves the logging code from meta_io.c into log.c and glops.c. As a result the routines can now be static and all the logging code is together in log.c, leaving meta_io.c with just metadata i/o code in it. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse
parent
f92a0b6ff4
commit
ddacfaf76d
@ -26,7 +26,58 @@
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#include "recovery.h"
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#include "rgrp.h"
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#include "util.h"
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#include "trans.h"
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/**
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* ail_empty_gl - remove all buffers for a given lock from the AIL
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* @gl: the glock
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*
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* None of the buffers should be dirty, locked, or pinned.
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*/
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static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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unsigned int blocks;
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struct list_head *head = &gl->gl_ail_list;
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struct gfs2_bufdata *bd;
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struct buffer_head *bh;
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u64 blkno;
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int error;
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blocks = atomic_read(&gl->gl_ail_count);
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if (!blocks)
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return;
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error = gfs2_trans_begin(sdp, 0, blocks);
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if (gfs2_assert_withdraw(sdp, !error))
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return;
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gfs2_log_lock(sdp);
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while (!list_empty(head)) {
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bd = list_entry(head->next, struct gfs2_bufdata,
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bd_ail_gl_list);
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bh = bd->bd_bh;
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blkno = bh->b_blocknr;
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gfs2_assert_withdraw(sdp, !buffer_busy(bh));
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bd->bd_ail = NULL;
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list_del(&bd->bd_ail_st_list);
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list_del(&bd->bd_ail_gl_list);
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atomic_dec(&gl->gl_ail_count);
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brelse(bh);
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gfs2_log_unlock(sdp);
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gfs2_trans_add_revoke(sdp, blkno);
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gfs2_log_lock(sdp);
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}
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gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
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gfs2_log_unlock(sdp);
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gfs2_trans_end(sdp);
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gfs2_log_flush(sdp, NULL);
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}
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/**
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* gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
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109
fs/gfs2/log.c
109
fs/gfs2/log.c
@ -58,6 +58,90 @@ unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
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return blks;
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}
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/**
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* gfs2_ail1_start_one - Start I/O on a part of the AIL
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* @sdp: the filesystem
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* @tr: the part of the AIL
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*
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*/
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static void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct gfs2_bufdata *bd, *s;
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struct buffer_head *bh;
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int retry;
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BUG_ON(!spin_is_locked(&sdp->sd_log_lock));
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do {
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retry = 0;
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list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list,
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bd_ail_st_list) {
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bh = bd->bd_bh;
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gfs2_assert(sdp, bd->bd_ail == ai);
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if (!buffer_busy(bh)) {
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if (!buffer_uptodate(bh)) {
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gfs2_log_unlock(sdp);
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gfs2_io_error_bh(sdp, bh);
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gfs2_log_lock(sdp);
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}
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list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
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continue;
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}
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if (!buffer_dirty(bh))
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continue;
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list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list);
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gfs2_log_unlock(sdp);
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wait_on_buffer(bh);
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ll_rw_block(WRITE, 1, &bh);
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gfs2_log_lock(sdp);
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retry = 1;
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break;
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}
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} while (retry);
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}
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/**
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* gfs2_ail1_empty_one - Check whether or not a trans in the AIL has been synced
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* @sdp: the filesystem
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* @ai: the AIL entry
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*
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*/
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static int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags)
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{
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struct gfs2_bufdata *bd, *s;
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struct buffer_head *bh;
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list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list,
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bd_ail_st_list) {
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bh = bd->bd_bh;
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gfs2_assert(sdp, bd->bd_ail == ai);
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if (buffer_busy(bh)) {
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if (flags & DIO_ALL)
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continue;
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else
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break;
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}
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if (!buffer_uptodate(bh))
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gfs2_io_error_bh(sdp, bh);
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list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
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}
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return list_empty(&ai->ai_ail1_list);
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}
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void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags)
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{
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struct list_head *head = &sdp->sd_ail1_list;
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@ -121,6 +205,31 @@ int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags)
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return ret;
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}
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/**
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* gfs2_ail2_empty_one - Check whether or not a trans in the AIL has been synced
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* @sdp: the filesystem
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* @ai: the AIL entry
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*
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*/
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static void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct list_head *head = &ai->ai_ail2_list;
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struct gfs2_bufdata *bd;
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while (!list_empty(head)) {
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bd = list_entry(head->prev, struct gfs2_bufdata,
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bd_ail_st_list);
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gfs2_assert(sdp, bd->bd_ail == ai);
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bd->bd_ail = NULL;
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list_del(&bd->bd_ail_st_list);
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list_del(&bd->bd_ail_gl_list);
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atomic_dec(&bd->bd_gl->gl_ail_count);
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brelse(bd->bd_bh);
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}
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}
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static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail)
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{
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struct gfs2_ail *ai, *safe;
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@ -34,11 +34,6 @@
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#include "util.h"
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#include "ops_address.h"
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#define buffer_busy(bh) \
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((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
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#define buffer_in_io(bh) \
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((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock)))
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static int aspace_get_block(struct inode *inode, sector_t lblock,
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struct buffer_head *bh_result, int create)
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{
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@ -91,165 +86,6 @@ void gfs2_aspace_put(struct inode *aspace)
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iput(aspace);
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}
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/**
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* gfs2_ail1_start_one - Start I/O on a part of the AIL
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* @sdp: the filesystem
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* @tr: the part of the AIL
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*
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*/
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void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct gfs2_bufdata *bd, *s;
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struct buffer_head *bh;
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int retry;
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BUG_ON(!spin_is_locked(&sdp->sd_log_lock));
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do {
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retry = 0;
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list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list,
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bd_ail_st_list) {
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bh = bd->bd_bh;
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gfs2_assert(sdp, bd->bd_ail == ai);
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if (!buffer_busy(bh)) {
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if (!buffer_uptodate(bh)) {
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gfs2_log_unlock(sdp);
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gfs2_io_error_bh(sdp, bh);
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gfs2_log_lock(sdp);
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}
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list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
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continue;
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}
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if (!buffer_dirty(bh))
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continue;
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list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list);
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gfs2_log_unlock(sdp);
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wait_on_buffer(bh);
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ll_rw_block(WRITE, 1, &bh);
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gfs2_log_lock(sdp);
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retry = 1;
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break;
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}
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} while (retry);
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}
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/**
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* gfs2_ail1_empty_one - Check whether or not a trans in the AIL has been synced
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* @sdp: the filesystem
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* @ai: the AIL entry
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*
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*/
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int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags)
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{
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struct gfs2_bufdata *bd, *s;
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struct buffer_head *bh;
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list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list,
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bd_ail_st_list) {
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bh = bd->bd_bh;
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gfs2_assert(sdp, bd->bd_ail == ai);
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if (buffer_busy(bh)) {
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if (flags & DIO_ALL)
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continue;
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else
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break;
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}
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if (!buffer_uptodate(bh))
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gfs2_io_error_bh(sdp, bh);
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list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list);
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}
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return list_empty(&ai->ai_ail1_list);
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}
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/**
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* gfs2_ail2_empty_one - Check whether or not a trans in the AIL has been synced
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* @sdp: the filesystem
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* @ai: the AIL entry
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*
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*/
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void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
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{
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struct list_head *head = &ai->ai_ail2_list;
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struct gfs2_bufdata *bd;
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while (!list_empty(head)) {
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bd = list_entry(head->prev, struct gfs2_bufdata,
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bd_ail_st_list);
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gfs2_assert(sdp, bd->bd_ail == ai);
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bd->bd_ail = NULL;
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list_del(&bd->bd_ail_st_list);
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list_del(&bd->bd_ail_gl_list);
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atomic_dec(&bd->bd_gl->gl_ail_count);
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brelse(bd->bd_bh);
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}
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}
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/**
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* ail_empty_gl - remove all buffers for a given lock from the AIL
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* @gl: the glock
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*
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* None of the buffers should be dirty, locked, or pinned.
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*/
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void gfs2_ail_empty_gl(struct gfs2_glock *gl)
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{
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struct gfs2_sbd *sdp = gl->gl_sbd;
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unsigned int blocks;
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struct list_head *head = &gl->gl_ail_list;
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struct gfs2_bufdata *bd;
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struct buffer_head *bh;
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u64 blkno;
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int error;
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blocks = atomic_read(&gl->gl_ail_count);
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if (!blocks)
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return;
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error = gfs2_trans_begin(sdp, 0, blocks);
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if (gfs2_assert_withdraw(sdp, !error))
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return;
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gfs2_log_lock(sdp);
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while (!list_empty(head)) {
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bd = list_entry(head->next, struct gfs2_bufdata,
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bd_ail_gl_list);
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bh = bd->bd_bh;
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blkno = bh->b_blocknr;
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gfs2_assert_withdraw(sdp, !buffer_busy(bh));
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bd->bd_ail = NULL;
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list_del(&bd->bd_ail_st_list);
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list_del(&bd->bd_ail_gl_list);
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atomic_dec(&gl->gl_ail_count);
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brelse(bh);
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gfs2_log_unlock(sdp);
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gfs2_trans_add_revoke(sdp, blkno);
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gfs2_log_lock(sdp);
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}
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gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
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gfs2_log_unlock(sdp);
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gfs2_trans_end(sdp);
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gfs2_log_flush(sdp, NULL);
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}
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/**
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* gfs2_meta_inval - Invalidate all buffers associated with a glock
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* @gl: the glock
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@ -40,11 +40,6 @@ static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
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struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp);
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void gfs2_aspace_put(struct inode *aspace);
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void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai);
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int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags);
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void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai);
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void gfs2_ail_empty_gl(struct gfs2_glock *gl);
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void gfs2_meta_inval(struct gfs2_glock *gl);
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void gfs2_meta_sync(struct gfs2_glock *gl);
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@ -74,5 +69,10 @@ static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
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struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);
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void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
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#define buffer_busy(bh) \
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((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
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#define buffer_in_io(bh) \
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((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock)))
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#endif /* __DIO_DOT_H__ */
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