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Subject[PATCH 04/58] staging: lustre: llite: cache directory striping information
Date
From: wang di <di.wang@intel.com>

Cache directory striping information that the clients receive
from the metadata servers.

Signed-off-by: wang di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/7043
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3531
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
.../staging/lustre/lustre/llite/llite_internal.h | 3 +++
drivers/staging/lustre/lustre/llite/llite_lib.c | 15 +++++++++++++--
2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 27d3f77..baa208f 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -173,6 +173,8 @@ struct ll_inode_info {
* -- I am the owner of dir statahead.
*/
pid_t d_opendir_pid;
+ /* directory stripe information */
+ struct lmv_stripe_md *d_lmv_md;
} d;

#define lli_readdir_mutex u.d.d_readdir_mutex
@@ -180,6 +182,7 @@ struct ll_inode_info {
#define lli_sai u.d.d_sai
#define lli_sa_lock u.d.d_sa_lock
#define lli_opendir_pid u.d.d_opendir_pid
+#define lli_lmv_md u.d.d_lmv_md

/* for non-directory */
struct {
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 75d568f..eb715be 100644
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -2090,11 +2090,22 @@ struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,

ll_i2gids(op_data->op_suppgids, i1, i2);
op_data->op_fid1 = *ll_inode2fid(i1);
+ if (S_ISDIR(i1->i_mode))
+ op_data->op_mea1 = ll_i2info(i1)->lli_lmv_md;

- if (i2)
+ if (i2) {
op_data->op_fid2 = *ll_inode2fid(i2);
- else
+ if (S_ISDIR(i2->i_mode))
+ op_data->op_mea2 = ll_i2info(i2)->lli_lmv_md;
+ } else {
fid_zero(&op_data->op_fid2);
+ }
+
+ if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
+ op_data->op_cli_flags |= CLI_HASH64;
+
+ if (ll_need_32bit_api(ll_i2sbi(i1)))
+ op_data->op_cli_flags |= CLI_API32;

op_data->op_name = name;
op_data->op_namelen = namelen;
--
1.7.1
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