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[GFS2] Add gfs2 superblock to glock hash function 

This is another patch preparing for sharing of the glock hash
table between different gfs2 mounts.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2006-09-07 13:12:27 -04:00
parent 62f140c173
commit b8547856f9
1 changed files with 5 additions and 3 deletions
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8
fs/gfs2/glock.c
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@ -83,12 +83,14 @@ static inline int relaxed_state_ok(unsigned int actual, unsigned requested,
* Returns: The number of the corresponding hash bucket
*/
static unsigned int gl_hash(const struct lm_lockname *name)
static unsigned int gl_hash(const struct gfs2_sbd *sdp,
const struct lm_lockname *name)
{
unsigned int h;
h = jhash(&name->ln_number, sizeof(u64), 0);
h = jhash(&name->ln_type, sizeof(unsigned int), h);
h = jhash(&sdp, sizeof(struct gfs2_sbd *), h);
h &= GFS2_GL_HASH_MASK;
return h;
@ -232,7 +234,7 @@ static struct gfs2_glock *search_bucket(struct gfs2_gl_hash_bucket *bucket,
static struct gfs2_glock *gfs2_glock_find(struct gfs2_sbd *sdp,
const struct lm_lockname *name)
{
struct gfs2_gl_hash_bucket *bucket = &sdp->sd_gl_hash[gl_hash(name)];
struct gfs2_gl_hash_bucket *bucket = &sdp->sd_gl_hash[gl_hash(sdp, name)];
struct gfs2_glock *gl;
read_lock(&bucket->hb_lock);
@ -266,7 +268,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
name.ln_number = number;
name.ln_type = glops->go_type;
bucket = &sdp->sd_gl_hash[gl_hash(&name)];
bucket = &sdp->sd_gl_hash[gl_hash(sdp, &name)];
read_lock(&bucket->hb_lock);
gl = search_bucket(bucket, sdp, &name);