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-rw-r--r--fs/gfs2/log.c57
1 files changed, 11 insertions, 46 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index d886a17..f5eacb3 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -357,18 +357,6 @@ retry:
return 0;
}
-u64 gfs2_log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
-{
- struct gfs2_journal_extent *je;
-
- list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) {
- if (lbn >= je->lblock && lbn < je->lblock + je->blocks)
- return je->dblock + lbn - je->lblock;
- }
-
- return -1;
-}
-
/**
* log_distance - Compute distance between two journal blocks
* @sdp: The GFS2 superblock
@@ -464,17 +452,6 @@ static unsigned int current_tail(struct gfs2_sbd *sdp)
return tail;
}
-void gfs2_log_incr_head(struct gfs2_sbd *sdp)
-{
- BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) &&
- (sdp->sd_log_flush_head != sdp->sd_log_head));
-
- if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) {
- sdp->sd_log_flush_head = 0;
- sdp->sd_log_flush_wrapped = 1;
- }
-}
-
static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail)
{
unsigned int dist = log_distance(sdp, new_tail, sdp->sd_log_tail);
@@ -580,23 +557,17 @@ static void gfs2_ordered_wait(struct gfs2_sbd *sdp)
static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
{
- u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head);
- struct buffer_head *bh;
struct gfs2_log_header *lh;
unsigned int tail;
u32 hash;
-
- bh = sb_getblk(sdp->sd_vfs, blkno);
- lock_buffer(bh);
- memset(bh->b_data, 0, bh->b_size);
- set_buffer_uptodate(bh);
- clear_buffer_dirty(bh);
+ int rw = WRITE_FLUSH_FUA | REQ_META;
+ struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
+ lh = page_address(page);
+ clear_page(lh);
gfs2_ail1_empty(sdp);
tail = current_tail(sdp);
- lh = (struct gfs2_log_header *)bh->b_data;
- memset(lh, 0, sizeof(struct gfs2_log_header));
lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH);
lh->lh_header.__pad0 = cpu_to_be64(0);
@@ -606,29 +577,22 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags)
lh->lh_flags = cpu_to_be32(flags);
lh->lh_tail = cpu_to_be32(tail);
lh->lh_blkno = cpu_to_be32(sdp->sd_log_flush_head);
- hash = gfs2_disk_hash(bh->b_data, sizeof(struct gfs2_log_header));
+ hash = gfs2_disk_hash(page_address(page), sizeof(struct gfs2_log_header));
lh->lh_hash = cpu_to_be32(hash);
- bh->b_end_io = end_buffer_write_sync;
- get_bh(bh);
if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) {
gfs2_ordered_wait(sdp);
log_flush_wait(sdp);
- submit_bh(WRITE_SYNC | REQ_META | REQ_PRIO, bh);
- } else {
- submit_bh(WRITE_FLUSH_FUA | REQ_META, bh);
+ rw = WRITE_SYNC | REQ_META | REQ_PRIO;
}
- wait_on_buffer(bh);
- if (!buffer_uptodate(bh))
- gfs2_io_error_bh(sdp, bh);
- brelse(bh);
+ sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
+ gfs2_log_write_page(sdp, page);
+ gfs2_log_flush_bio(sdp, rw);
+ log_flush_wait(sdp);
if (sdp->sd_log_tail != tail)
log_pull_tail(sdp, tail);
-
- sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
- gfs2_log_incr_head(sdp);
}
/**
@@ -674,6 +638,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
gfs2_ordered_write(sdp);
lops_before_commit(sdp);
+ gfs2_log_flush_bio(sdp, WRITE);
if (sdp->sd_log_head != sdp->sd_log_flush_head) {
log_write_header(sdp, 0);
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