LU-14361 statahead: add support for mdtest shared dir workload

[fs/lustre-release.git] / lustre / llite / llite_internal.h

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index 2841870..cd5fe30 100644 (file)
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -129,6 +129,8 @@ enum ll_sa_pattern {
        LSA_PATTERN_FNAME               = 0x0004,
        /* statahead advise via statahead hint from users */
        LSA_PATTERN_ADVISE              = 0x0008,
+       /* have called opendir() on the parent dir */
+       LSA_PATTERN_OPENDIR             = 0x0010,
        /* not first dirent, or is "." for listing */
        LSA_PATTERN_LS_NOT_FIRST_DE     = 0x0100,
        /* the file names of stat() calls has regularized predictable format */
@@ -202,10 +204,10 @@ struct ll_inode_info {
                        struct ll_statahead_context    *lli_sax;
                        /* protect statahead stuff. */
                        spinlock_t                      lli_sa_lock;
-                       /* "opendir_pid" is the token when lookup/revalid
+                       /* "stat_pid" is the token when lookup/revalid
                         * -- I am the owner of dir statahead.
                         */
-                       pid_t                           lli_opendir_pid;
+                       pid_t                           lli_stat_pid;
                        /* directory depth to ROOT */
                        unsigned short                  lli_dir_depth;
                        /* directory depth to ancestor whose default LMV is
@@ -1758,6 +1760,8 @@ void ll_ra_stats_inc(struct inode *inode, enum ra_stat which);
 
 /* statahead controller, per process struct, for dir only */
 struct ll_statahead_info {
+       pid_t                   sai_pid;
+       struct list_head        sai_item;
        struct dentry           *sai_dentry;
        atomic_t                sai_refcount;   /* On access, hold refcount */
        unsigned int            sai_max;        /* max ahead of lookup */
@@ -1818,6 +1822,7 @@ struct ll_statahead_context {
        /* Local dcache */
        struct list_head         sax_cache[LL_SA_CACHE_SIZE];
        spinlock_t               sax_cache_lock[LL_SA_CACHE_SIZE];
+       struct list_head         sax_sai_list;
 };
 
 int ll_revalidate_statahead(struct inode *dir, struct dentry **dentry,
@@ -1910,7 +1915,7 @@ dentry_may_statahead(struct inode *dir, struct dentry *dentry)
                return true;
 
        /* not the same process, don't statahead */
-       if (lli->lli_opendir_pid != current->pid)
+       if (lli->lli_stat_pid != current->pid)
                return false;
 
        return true;