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authorSteven Whitehouse <swhiteho@redhat.com>2009-01-12 10:43:39 +0000
committerSteven Whitehouse <steve@dolmen.chygwyn.com>2009-03-24 11:21:14 +0000
commitf057f6cdf64175db1151b1f5d110e29904f119a1 (patch)
tree582dbf358e351f64977620c29ebf772d693b1948 /fs/gfs2/quota.c
parent22077f57dec8fcbeb1112b35313961c0902ff038 (diff)
downloadlinux-f057f6cdf64175db1151b1f5d110e29904f119a1.tar.bz2
GFS2: Merge lock_dlm module into GFS2
This is the big patch that I've been working on for some time now. There are many reasons for wanting to make this change such as: o Reducing overhead by eliminating duplicated fields between structures o Simplifcation of the code (reduces the code size by a fair bit) o The locking interface is now the DLM interface itself as proposed some time ago. o Fewer lookups of glocks when processing replies from the DLM o Fewer memory allocations/deallocations for each glock o Scope to do further optimisations in the future (but this patch is more than big enough for now!) Please note that (a) this patch relates to the lock_dlm module and not the DLM itself, that is still a separate module; and (b) that we retain the ability to build GFS2 as a standalone single node filesystem with out requiring the DLM. This patch needs a lot of testing, hence my keeping it I restarted my -git tree after the last merge window. That way, this has the maximum exposure before its merged. This is (modulo a few minor bug fixes) the same patch that I've been posting on and off the the last three months and its passed a number of different tests so far. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/quota.c')
-rw-r--r--fs/gfs2/quota.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index e8ef0f80fb11..8d53f66b5bcc 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -45,7 +45,6 @@
#include <linux/fs.h>
#include <linux/bio.h>
#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
@@ -108,7 +107,7 @@ int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask)
gfs2_assert_warn(sdp, !qd->qd_slot_count);
gfs2_assert_warn(sdp, !qd->qd_bh_count);
- gfs2_lvb_unhold(qd->qd_gl);
+ gfs2_glock_put(qd->qd_gl);
atomic_dec(&sdp->sd_quota_count);
/* Delete it from the common reclaim list */
@@ -157,11 +156,6 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
if (error)
goto fail;
- error = gfs2_lvb_hold(qd->qd_gl);
- gfs2_glock_put(qd->qd_gl);
- if (error)
- goto fail;
-
*qdp = qd;
return 0;
@@ -211,7 +205,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
if (qd || !create) {
if (new_qd) {
- gfs2_lvb_unhold(new_qd->qd_gl);
+ gfs2_glock_put(new_qd->qd_gl);
kmem_cache_free(gfs2_quotad_cachep, new_qd);
}
*qdp = qd;
@@ -1280,7 +1274,7 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp)
gfs2_assert_warn(sdp, qd->qd_slot_count == 1);
gfs2_assert_warn(sdp, !qd->qd_bh_count);
- gfs2_lvb_unhold(qd->qd_gl);
+ gfs2_glock_put(qd->qd_gl);
kmem_cache_free(gfs2_quotad_cachep, qd);
spin_lock(&qd_lru_lock);