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| author |  Bob Peterson <rpeterso@redhat.com>
| 2015-03-16 11:52:05 -0500 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com>
| 2015-09-03 13:33:09 -0500 |
| commit | 15562c439d0a1850b71aa1c0d92d1f4fb9503c8d (patch) | |
| tree | 172b76ac4411cc2f1e740dc054cf15954f5e6084 /fs/gfs2/incore.h | |
| parent | gfs2: Simplify the seq file code for "sbstats" (diff) | |
| download | linux-15562c439d0a1850b71aa1c0d92d1f4fb9503c8d.tar.gz linux-15562c439d0a1850b71aa1c0d92d1f4fb9503c8d.tar.bz2 linux-15562c439d0a1850b71aa1c0d92d1f4fb9503c8d.zip | |
GFS2: Move glock superblock pointer to field gl_name
What uniquely identifies a glock in the glock hash table is not
gl_name, but gl_name and its superblock pointer. This patch makes
the gl_name field correspond to a unique glock identifier. That will
allow us to simplify hashing with a future patch, since the hash
algorithm can then take the gl_name and hash its components in one
operation.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/incore.h')
| -rw-r--r-- | fs/gfs2/incore.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index a1ec7c20e498..35a55f3d6d3b 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -203,13 +203,15 @@ enum { }; struct lm_lockname { + struct gfs2_sbd *ln_sbd; u64 ln_number; unsigned int ln_type; }; #define lm_name_equal(name1, name2) \ - (((name1)->ln_number == (name2)->ln_number) && \ - ((name1)->ln_type == (name2)->ln_type)) + (((name1)->ln_number == (name2)->ln_number) && \ + ((name1)->ln_type == (name2)->ln_type) && \ + ((name1)->ln_sbd == (name2)->ln_sbd)) struct gfs2_glock_operations { @@ -327,7 +329,6 @@ enum { struct gfs2_glock { struct hlist_bl_node gl_list; - struct gfs2_sbd *gl_sbd; unsigned long gl_flags; /* GLF_... */ struct lm_lockname gl_name; @@ -835,7 +836,7 @@ static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) { - const struct gfs2_sbd *sdp = gl->gl_sbd; + const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; preempt_disable(); this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; preempt_enable(); |