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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-15 12:34:21 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-15 12:34:21 -0800
commit08242bc2210938761230f79c5288dbcf72e94808 (patch)
treef0e880673fb5139c692bd4004e9f165c249613ed /fs/gfs2/glock.c
parentbe354f40812314dee2b1e3aa272528c056bb827d (diff)
parent1e2d9d44f3ceb7dac7cb14d2476d0a8128c8e169 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw
Pull GFS2 updates from Steven Whitehouse: "The main feature this time is the new Orlov allocator and the patches leading up to it which allow us to allocate new inodes from their own allocation context, rather than borrowing that of their parent directory. It is this change which then allows us to choose a different location for subdirectories when required. This works exactly as per the ext3 implementation from the users point of view. In addition to that, we've got a speed up in gfs2_rbm_from_block() from Bob Peterson, three locking related improvements from Dave Teigland plus a selection of smaller bug fixes and clean ups." * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: GFS2: Set gl_object during inode create GFS2: add error check while allocating new inodes GFS2: don't reference inode's glock during block allocation trace GFS2: remove redundant lvb pointer GFS2: only use lvb on glocks that need it GFS2: skip dlm_unlock calls in unmount GFS2: Fix one RG corner case GFS2: Eliminate redundant buffer_head manipulation in gfs2_unlink_inode GFS2: Use dirty_inode in gfs2_dir_add GFS2: Fix truncation of journaled data files GFS2: Add Orlov allocator GFS2: Use proper allocation context for new inodes GFS2: Add test for resource group congestion status GFS2: Rename glops go_xmote_th to go_sync GFS2: Speed up gfs2_rbm_from_block GFS2: Review bug traps in glops.c
Diffstat (limited to 'fs/gfs2/glock.c')
-rw-r--r--fs/gfs2/glock.c40
1 files changed, 26 insertions, 14 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 0f22d09f358d..992c5c0cb504 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -55,8 +55,6 @@ struct gfs2_glock_iter {
typedef void (*glock_examiner) (struct gfs2_glock * gl);
-static int __dump_glock(struct seq_file *seq, const struct gfs2_glock *gl);
-#define GLOCK_BUG_ON(gl,x) do { if (unlikely(x)) { __dump_glock(NULL, gl); BUG(); } } while(0)
static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int target);
static struct dentry *gfs2_root;
@@ -107,10 +105,12 @@ static void gfs2_glock_dealloc(struct rcu_head *rcu)
{
struct gfs2_glock *gl = container_of(rcu, struct gfs2_glock, gl_rcu);
- if (gl->gl_ops->go_flags & GLOF_ASPACE)
+ if (gl->gl_ops->go_flags & GLOF_ASPACE) {
kmem_cache_free(gfs2_glock_aspace_cachep, gl);
- else
+ } else {
+ kfree(gl->gl_lksb.sb_lvbptr);
kmem_cache_free(gfs2_glock_cachep, gl);
+ }
}
void gfs2_glock_free(struct gfs2_glock *gl)
@@ -537,8 +537,8 @@ __acquires(&gl->gl_spin)
(lck_flags & (LM_FLAG_TRY|LM_FLAG_TRY_1CB)))
clear_bit(GLF_BLOCKING, &gl->gl_flags);
spin_unlock(&gl->gl_spin);
- if (glops->go_xmote_th)
- glops->go_xmote_th(gl);
+ if (glops->go_sync)
+ glops->go_sync(gl);
if (test_bit(GLF_INVALIDATE_IN_PROGRESS, &gl->gl_flags))
glops->go_inval(gl, target == LM_ST_DEFERRED ? 0 : DIO_METADATA);
clear_bit(GLF_INVALIDATE_IN_PROGRESS, &gl->gl_flags);
@@ -547,7 +547,10 @@ __acquires(&gl->gl_spin)
if (sdp->sd_lockstruct.ls_ops->lm_lock) {
/* lock_dlm */
ret = sdp->sd_lockstruct.ls_ops->lm_lock(gl, target, lck_flags);
- GLOCK_BUG_ON(gl, ret);
+ if (ret) {
+ printk(KERN_ERR "GFS2: lm_lock ret %d\n", ret);
+ GLOCK_BUG_ON(gl, 1);
+ }
} else { /* lock_nolock */
finish_xmote(gl, target);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
@@ -736,6 +739,16 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
if (!gl)
return -ENOMEM;
+ memset(&gl->gl_lksb, 0, sizeof(struct dlm_lksb));
+
+ if (glops->go_flags & GLOF_LVB) {
+ gl->gl_lksb.sb_lvbptr = kzalloc(GFS2_MIN_LVB_SIZE, GFP_KERNEL);
+ if (!gl->gl_lksb.sb_lvbptr) {
+ kmem_cache_free(cachep, gl);
+ return -ENOMEM;
+ }
+ }
+
atomic_inc(&sdp->sd_glock_disposal);
gl->gl_sbd = sdp;
gl->gl_flags = 0;
@@ -753,9 +766,6 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
preempt_enable();
gl->gl_stats.stats[GFS2_LKS_DCOUNT] = 0;
gl->gl_stats.stats[GFS2_LKS_QCOUNT] = 0;
- memset(&gl->gl_lksb, 0, sizeof(struct dlm_lksb));
- memset(gl->gl_lvb, 0, 32 * sizeof(char));
- gl->gl_lksb.sb_lvbptr = gl->gl_lvb;
gl->gl_tchange = jiffies;
gl->gl_object = NULL;
gl->gl_hold_time = GL_GLOCK_DFT_HOLD;
@@ -777,6 +787,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
tmp = search_bucket(hash, sdp, &name);
if (tmp) {
spin_unlock_bucket(hash);
+ kfree(gl->gl_lksb.sb_lvbptr);
kmem_cache_free(cachep, gl);
atomic_dec(&sdp->sd_glock_disposal);
gl = tmp;
@@ -1013,7 +1024,7 @@ trap_recursive:
printk(KERN_ERR "pid: %d\n", pid_nr(gh->gh_owner_pid));
printk(KERN_ERR "lock type: %d req lock state : %d\n",
gh->gh_gl->gl_name.ln_type, gh->gh_state);
- __dump_glock(NULL, gl);
+ gfs2_dump_glock(NULL, gl);
BUG();
}
@@ -1508,7 +1519,7 @@ static int dump_glock(struct seq_file *seq, struct gfs2_glock *gl)
{
int ret;
spin_lock(&gl->gl_spin);
- ret = __dump_glock(seq, gl);
+ ret = gfs2_dump_glock(seq, gl);
spin_unlock(&gl->gl_spin);
return ret;
}
@@ -1528,6 +1539,7 @@ static void dump_glock_func(struct gfs2_glock *gl)
void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
{
+ set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags);
glock_hash_walk(clear_glock, sdp);
flush_workqueue(glock_workqueue);
wait_event(sdp->sd_glock_wait, atomic_read(&sdp->sd_glock_disposal) == 0);
@@ -1655,7 +1667,7 @@ static const char *gflags2str(char *buf, const struct gfs2_glock *gl)
}
/**
- * __dump_glock - print information about a glock
+ * gfs2_dump_glock - print information about a glock
* @seq: The seq_file struct
* @gl: the glock
*
@@ -1672,7 +1684,7 @@ static const char *gflags2str(char *buf, const struct gfs2_glock *gl)
* Returns: 0 on success, -ENOBUFS when we run out of space
*/
-static int __dump_glock(struct seq_file *seq, const struct gfs2_glock *gl)
+int gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl)
{
const struct gfs2_glock_operations *glops = gl->gl_ops;
unsigned long long dtime;