diff options
| -rw-r--r-- | fs/gfs2/glock.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index cd0aa213fb2f..13391e546616 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -267,8 +267,12 @@ static inline int may_grant(const struct gfs2_glock *gl, const struct gfs2_holde return 1; if (gh->gh_flags & GL_EXACT) return 0; - if (gh->gh_state == LM_ST_SHARED && gl->gl_state == LM_ST_EXCLUSIVE) - return 1; + if (gl->gl_state == LM_ST_EXCLUSIVE) { + if (gh->gh_state == LM_ST_SHARED && gh_head->gh_state == LM_ST_SHARED) + return 1; + if (gh->gh_state == LM_ST_DEFERRED && gh_head->gh_state == LM_ST_DEFERRED) + return 1; + } if (gl->gl_state != LM_ST_UNLOCKED && (gh->gh_flags & LM_FLAG_ANY)) return 1; return 0; |