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Commit e1cb6be9 authored by Bob Peterson's avatar Bob Peterson
Browse files

GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes 



Before this patch, if you used gfs2_jadd to add new journals of a
size smaller than the existing journals, replaying those new journals
would withdraw. That's because function gfs2_replay_incr_blk was
using the number of journal blocks (jd_block) from the superblock's
journal pointer. In other words, "My journal's max size" rather than
"the journal we're replaying's size." This patch changes the function
to use the size of the pertinent journal rather than always using the
journal we happen to be using.

Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
parent 44f52122

fs/gfs2/lops.c

+5 −6
Original line number Diff line number Diff line
@@ -535,9 +535,9 @@ static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 
	if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)

		return 0;



	gfs2_replay_incr_blk(sdp, &start);

	gfs2_replay_incr_blk(jd, &start);



	for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {

	for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) {

		blkno = be64_to_cpu(*ptr++);



		jd->jd_found_blocks++;
@@ -693,7 +693,7 @@ static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 


	offset = sizeof(struct gfs2_log_descriptor);



	for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {

	for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) {

		error = gfs2_replay_read_block(jd, start, &bh);

		if (error)

			return error;
@@ -762,7 +762,6 @@ static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 
				    __be64 *ptr, int pass)

{

	struct gfs2_inode *ip = GFS2_I(jd->jd_inode);

	struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);

	struct gfs2_glock *gl = ip->i_gl;

	unsigned int blks = be32_to_cpu(ld->ld_data1);

	struct buffer_head *bh_log, *bh_ip;
@@ -773,8 +772,8 @@ static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 
	if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)

		return 0;



	gfs2_replay_incr_blk(sdp, &start);

	for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {

	gfs2_replay_incr_blk(jd, &start);

	for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) {

		blkno = be64_to_cpu(*ptr++);

		esc = be64_to_cpu(*ptr++);

fs/gfs2/recovery.c

+3 −3
Original line number Diff line number Diff line
@@ -338,7 +338,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start, 
			struct gfs2_log_header_host lh;

			error = get_log_header(jd, start, &lh);

			if (!error) {

				gfs2_replay_incr_blk(sdp, &start);

				gfs2_replay_incr_blk(jd, &start);

				brelse(bh);

				continue;

			}
@@ -360,7 +360,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start, 
		}



		while (length--)

			gfs2_replay_incr_blk(sdp, &start);

			gfs2_replay_incr_blk(jd, &start);



		brelse(bh);

	}
@@ -390,7 +390,7 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header_host *hea 
	struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };



	lblock = head->lh_blkno;

	gfs2_replay_incr_blk(sdp, &lblock);

	gfs2_replay_incr_blk(jd, &lblock);

	bh_map.b_size = 1 << ip->i_inode.i_blkbits;

	error = gfs2_block_map(&ip->i_inode, lblock, &bh_map, 0);

	if (error)

fs/gfs2/recovery.h

+2 −2
Original line number Diff line number Diff line
@@ -14,9 +14,9 @@ 


extern struct workqueue_struct *gfs_recovery_wq;



static inline void gfs2_replay_incr_blk(struct gfs2_sbd *sdp, unsigned int *blk)

static inline void gfs2_replay_incr_blk(struct gfs2_jdesc *jd, unsigned int *blk)

{

	if (++*blk == sdp->sd_jdesc->jd_blocks)

	if (++*blk == jd->jd_blocks)

	        *blk = 0;

}