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authorSteven Whitehouse <swhiteho@redhat.com>2007-10-15 16:29:05 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2008-01-25 08:07:16 +0000
commitf91a0d3e24e4b0198be5fae20d45a35c40d1efce (patch)
treecda8095f9befd25cbfaf5f63a4c8ca26870d45ca /fs/gfs2/glops.c
parent3cc3f710ce0effe397b830826a1a081fa81f11c7 (diff)
downloadop-kernel-dev-f91a0d3e24e4b0198be5fae20d45a35c40d1efce.zip
op-kernel-dev-f91a0d3e24e4b0198be5fae20d45a35c40d1efce.tar.gz
[GFS2] Remove useless i_cache from inodes
The i_cache was designed to keep references to the indirect blocks used during block mapping so that they didn't have to be looked up continually. The idea failed because there are too many places where the i_cache needs to be freed, and this has in the past been the cause of many bugs. In addition there was no performance benefit being gained since the disk blocks in question were cached anyway. So this patch removes it in order to simplify the code to prepare for other changes which would otherwise have had to add further support for this feature. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glops.c')
-rw-r--r--fs/gfs2/glops.c21
1 files changed, 1 insertions, 20 deletions
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 110f03d..ba12423 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -56,7 +56,7 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
bd = list_entry(head->next, struct gfs2_bufdata,
bd_ail_gl_list);
bh = bd->bd_bh;
- gfs2_remove_from_ail(NULL, bd);
+ gfs2_remove_from_ail(bd);
bd->bd_bh = NULL;
bh->b_private = NULL;
bd->bd_blkno = bh->b_blocknr;
@@ -287,23 +287,6 @@ static int inode_go_lock(struct gfs2_holder *gh)
}
/**
- * inode_go_unlock - operation done before an inode lock is unlocked by a
- * process
- * @gl: the glock
- * @flags:
- *
- */
-
-static void inode_go_unlock(struct gfs2_holder *gh)
-{
- struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_inode *ip = gl->gl_object;
-
- if (ip)
- gfs2_meta_cache_flush(ip);
-}
-
-/**
* rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock
* @gl: the glock
*
@@ -377,7 +360,6 @@ static void trans_go_xmote_bh(struct gfs2_glock *gl)
if (gl->gl_state != LM_ST_UNLOCKED &&
test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
- gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode));
j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
@@ -437,7 +419,6 @@ const struct gfs2_glock_operations gfs2_inode_glops = {
.go_inval = inode_go_inval,
.go_demote_ok = inode_go_demote_ok,
.go_lock = inode_go_lock,
- .go_unlock = inode_go_unlock,
.go_type = LM_TYPE_INODE,
.go_min_hold_time = HZ / 10,
};
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