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Go Back   Linux Archive > Redhat > Cluster Development

 
 
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Old 11-25-2009, 01:31 PM
Steven Whitehouse
 
Default writeback: remove unused nonblocking and congestion checks (gfs2)

From: Wu Fengguang <fengguang.wu@intel.com>

No one is calling wb_writeback and write_cache_pages with
wbc.nonblocking=1 any more. And lumpy pageout will want to do
nonblocking writeback without the congestion wait.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
fs/gfs2/aops.c | 12 ------------
1 files changed, 0 insertions(+), 12 deletions(-)

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index dce062a..7b8da94 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -269,7 +269,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
unsigned offset = i_size & (PAGE_CACHE_SIZE-1);
unsigned nrblocks = nr_pages * (PAGE_CACHE_SIZE/inode->i_sb->s_blocksize);
- struct backing_dev_info *bdi = mapping->backing_dev_info;
int i;
int ret;

@@ -313,11 +312,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,

if (ret || (--(wbc->nr_to_write) <= 0))
ret = 1;
- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- ret = 1;
- }
-
}
gfs2_trans_end(sdp);
return ret;
@@ -338,7 +332,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
static int gfs2_write_cache_jdata(struct address_space *mapping,
struct writeback_control *wbc)
{
- struct backing_dev_info *bdi = mapping->backing_dev_info;
int ret = 0;
int done = 0;
struct pagevec pvec;
@@ -348,11 +341,6 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
int scanned = 0;
int range_whole = 0;

- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- return 0;
- }
-
pagevec_init(&pvec, 0);
if (wbc->range_cyclic) {
index = mapping->writeback_index; /* Start from prev offset */
--
1.6.2.5
 

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