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GFS2: Make writeback more responsive to system conditions

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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>
This commit is contained in:
Steven Whitehouse
2011-04-18 14:18:09 +01:00
parent f42ab08529
commit 4667a0ec32
8 changed files with 102 additions and 94 deletions
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2
fs/gfs2/export.c
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@@ -139,7 +139,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
struct gfs2_sbd *sdp = sb->s_fs_info;
struct inode *inode;
inode = gfs2_ilookup(sb, inum->no_addr);
inode = gfs2_ilookup(sb, inum->no_addr, 0);
if (inode) {
if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
iput(inode);