linux-ext4 - [PATCH v5 12/23] fanotify: Expose helper to estimate file handle encoding length

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Message-Id: <20210804160612.3575505-13-krisman@collabora.com>
Date:   Wed,  4 Aug 2021 12:06:01 -0400
From:   Gabriel Krisman Bertazi <krisman@...labora.com>
To:     jack@...e.com, amir73il@...il.com
Cc:     djwong@...nel.org, tytso@....edu, david@...morbit.com,
        dhowells@...hat.com, khazhy@...gle.com,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-api@...r.kernel.org,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        kernel@...labora.com
Subject: [PATCH v5 12/23] fanotify: Expose helper to estimate file handle encoding length

Superblock marks needs this when pre-allocating error events.

Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>
---
 fs/notify/fanotify/fanotify.c | 18 ------------------
 fs/notify/fanotify/fanotify.h | 18 ++++++++++++++++++
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index 538d114f439f..a015822e29d8 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -334,24 +334,6 @@ static u32 fanotify_group_event_mask(struct fsnotify_group *group,
 	return test_mask & user_mask;
 }
 
-/*
- * Check size needed to encode fanotify_fh.
- *
- * Return size of encoded fh without fanotify_fh header.
- * Return 0 on failure to encode.
- */
-static int fanotify_encode_fh_len(struct inode *inode)
-{
-	int dwords = 0;
-
-	if (!inode)
-		return 0;
-
-	exportfs_encode_inode_fh(inode, NULL, &dwords, NULL);
-
-	return dwords << 2;
-}
-
 /*
  * Encode fanotify_fh.
  *
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h
index d4a562c2619f..8061040f0348 100644
--- a/fs/notify/fanotify/fanotify.h
+++ b/fs/notify/fanotify/fanotify.h
@@ -348,3 +348,21 @@ static inline unsigned int fanotify_event_hash_bucket(
 {
 	return event->hash & FANOTIFY_HTABLE_MASK;
 }
+
+/*
+ * Check size needed to encode fanotify_fh.
+ *
+ * Return size of encoded fh without fanotify_fh header.
+ * Return 0 on failure to encode.
+ */
+static inline int fanotify_encode_fh_len(struct inode *inode)
+{
+	int dwords = 0;
+
+	if (!inode)
+		return 0;
+
+	exportfs_encode_inode_fh(inode, NULL, &dwords, NULL);
+
+	return dwords << 2;
+}
-- 
2.32.0