import-layers/yocto-poky/meta/recipes-devtools/pseudo/files/Fix-xattr-performance.patch

From 0d9071f3090bbd7880558f3b488b236ac19b44fc Mon Sep 17 00:00:00 2001
From: seebs <seebs@seebs.net>
Date: Thu, 28 Jul 2016 14:02:12 -0500
Subject: [PATCH 1/2] Fix xattr performance

When deleting files, we *do* know the inode and attribute, most of the
time, so we pass those in whenever possible. The full purge of unmatched
xattrs should not happen when the correct dev/ino are believed to be known.

Signed-off-by: Seebs <seebs@seebs.net>

[YOCTO #9929]
Upstream-Status: Backport (0d9071f3090bbd7880558f3b488b236ac19b44fc)
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
---
 ChangeLog.txt |  3 +++
 pseudo.c      | 11 ++++++++---
 pseudo_db.c   | 15 +++++++++------
 pseudo_db.h   |  2 +-
 4 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index 131f163..d6359ca 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1,3 +1,6 @@
+2016-07-28:
+	* (seebs) Fix performance issue on deletion with xattr changes.
+
 2016-07-08:
 	* (RP) release 1.8.1
 	* (joshuagl) Fix log table creation issue
diff --git a/pseudo.c b/pseudo.c
index 52f649f..db1c400 100644
--- a/pseudo.c
+++ b/pseudo.c
@@ -600,7 +600,12 @@ pseudo_op(pseudo_msg_t *msg, const char *program, const char *tag, char **respon
 				if (by_path.deleting != 0) {
 					pseudo_debug(PDBGF_FILE, "inode mismatch for '%s' -- old one was marked for deletion, deleting.\n",
 						msg->path);
-					pdb_did_unlink_file(msg->path, by_path.deleting);
+					/* in this case, we don't trust the
+					 * existing entries, so we will do the
+					 * more expensive sweep for stray
+					 * xattrs.
+					 */
+					pdb_did_unlink_file(msg->path, NULL, by_path.deleting);
 				} else {
 					pseudo_diag("inode mismatch: '%s' ino %llu in db, %llu in request.\n",
 						msg->path,
@@ -698,7 +703,7 @@ pseudo_op(pseudo_msg_t *msg, const char *program, const char *tag, char **respon
 				if (by_ino.deleting != 0) {
 					pseudo_debug(PDBGF_FILE, "inode mismatch for '%s' -- old one was marked for deletion, deleting.\n",
 						msg->path);
-					pdb_did_unlink_file(path_by_ino, by_ino.deleting);
+					pdb_did_unlink_file(path_by_ino, &by_ino, by_ino.deleting);
 				} else {
 					pseudo_diag("path mismatch [%d link%s]: ino %llu db '%s' req '%s'.\n",
 						msg->nlink,
@@ -930,7 +935,7 @@ pseudo_op(pseudo_msg_t *msg, const char *program, const char *tag, char **respon
 		}
 		break;
 	case OP_DID_UNLINK:
-		pdb_did_unlink_file(msg->path, msg->client);
+		pdb_did_unlink_file(msg->path, msg, msg->client);
 		break;
 	case OP_CANCEL_UNLINK:
 		pdb_cancel_unlink_file(msg);
diff --git a/pseudo_db.c b/pseudo_db.c
index 289bb29..e7dd193 100644
--- a/pseudo_db.c
+++ b/pseudo_db.c
@@ -1848,7 +1848,7 @@ pdb_did_unlink_files(int deleting) {
 
 /* confirm deletion of a specific file by a given client */
 int
-pdb_did_unlink_file(char *path, int deleting) {
+pdb_did_unlink_file(char *path, pseudo_msg_t *msg, int deleting) {
 	static sqlite3_stmt *delete_exact;
 	int rc, exact;
 	char *sql_delete_exact = "DELETE FROM files WHERE path = ? AND deleting = ?;";
@@ -1878,11 +1878,14 @@ pdb_did_unlink_file(char *path, int deleting) {
 	exact = sqlite3_changes(file_db);
 	pseudo_debug(PDBGF_DB, "(exact %d)\n", exact);
 	sqlite3_reset(delete_exact);
-	sqlite3_clear_bindings(delete_exact);
-	/* we have to clean everything because we don't know for sure the
-	 * device/inode...
-	 */
-	pdb_clear_unused_xattrs();
+	if (msg) {
+		pdb_clear_xattrs(msg);
+	} else {
+		/* we have to clean everything because we don't know for sure the
+		 * device/inode...
+		 */
+		pdb_clear_unused_xattrs();
+	}
 	return rc != SQLITE_DONE;
 }
 
diff --git a/pseudo_db.h b/pseudo_db.h
index a54f3c1..1b2599c 100644
--- a/pseudo_db.h
+++ b/pseudo_db.h
@@ -39,7 +39,7 @@ typedef struct {
 
 extern int pdb_maybe_backup(void);
 extern int pdb_cancel_unlink_file(pseudo_msg_t *msg);
-extern int pdb_did_unlink_file(char *path, int deleting);
+extern int pdb_did_unlink_file(char *path, pseudo_msg_t *msg, int deleting);
 extern int pdb_did_unlink_files(int deleting);
 extern int pdb_link_file(pseudo_msg_t *msg);
 extern int pdb_may_unlink_file(pseudo_msg_t *msg, int deleting);
-- 
2.7.4