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GFS2: Log code fixes

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This patch removes a log lock from around atomic operation where
it is not needed, removes an unused variable, and also changes
a void pointer used incorrectly to a struct page pointer.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2012-04-19 10:38:50 +01:00
parent 4306629e1c
commit 144a4c2ff7
2 changed files with 1 additions and 5 deletions
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4
fs/gfs2/log.c
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@ -643,10 +643,8 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
if (sdp->sd_log_head != sdp->sd_log_flush_head) {
log_write_header(sdp, 0);
} else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){
gfs2_log_lock(sdp);
atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */
trace_gfs2_log_blocks(sdp, -1);
gfs2_log_unlock(sdp);
log_write_header(sdp, 0);
}
lops_after_commit(sdp, ai);
@ -797,11 +795,9 @@ int gfs2_logd(void *data)
struct gfs2_sbd *sdp = data;
unsigned long t = 1;
DEFINE_WAIT(wait);
unsigned preflush;
while (!kthread_should_stop()) {
preflush = atomic_read(&sdp->sd_log_pinned);
if (gfs2_jrnl_flush_reqd(sdp) || t == 0) {
gfs2_ail1_empty(sdp);
gfs2_log_flush(sdp, NULL);

2
fs/gfs2/lops.c
View file

@ -375,7 +375,7 @@ void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page)
static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type,
u32 ld_length, u32 ld_data1)
{
void *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
struct gfs2_log_descriptor *ld = page_address(page);
clear_page(ld);
ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);