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authorSteven Whitehouse <swhiteho@redhat.com>2011-04-18 14:18:09 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2011-04-20 09:01:37 +0100
commit4667a0ec32867865fd4deccf834594b3ea831baf (patch)
treebff74fb13700e4087972fce94e45fd69dae7939b /fs/gfs2/super.c
parentf42ab0852946c1fb5103682c5897eb3da908e4b0 (diff)
downloadop-kernel-dev-4667a0ec32867865fd4deccf834594b3ea831baf.zip
op-kernel-dev-4667a0ec32867865fd4deccf834594b3ea831baf.tar.gz
GFS2: Make writeback more responsive to system conditions
This patch adds writeback_control to writing back the AIL list. This means that we can then take advantage of the information we get in ->write_inode() in order to set off some pre-emptive writeback. In addition, the AIL code is cleaned up a bit to make it a bit simpler to understand. There is still more which can usefully be done in this area, but this is a good start at least. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/super.c')
-rw-r--r--fs/gfs2/super.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 215c37b..58fe3a4 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -23,6 +23,7 @@
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/writeback.h>
+#include <linux/backing-dev.h>
#include "gfs2.h"
#include "incore.h"
@@ -714,6 +715,7 @@ static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl);
+ struct backing_dev_info *bdi = metamapping->backing_dev_info;
struct gfs2_holder gh;
struct buffer_head *bh;
struct timespec atime;
@@ -747,6 +749,8 @@ do_flush:
if (wbc->sync_mode == WB_SYNC_ALL)
gfs2_log_flush(GFS2_SB(inode), ip->i_gl);
filemap_fdatawrite(metamapping);
+ if (bdi->dirty_exceeded)
+ gfs2_ail1_flush(sdp, wbc);
if (!ret && (wbc->sync_mode == WB_SYNC_ALL))
ret = filemap_fdatawait(metamapping);
if (ret)
@@ -1366,7 +1370,8 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
if (error)
goto out_rindex_relse;
- error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1);
+ error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA,
+ sdp->sd_jdesc->jd_blocks);
if (error)
goto out_rg_gunlock;
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