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-rw-r--r--mm/truncate.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 234ddd879caa..44ad5e515140 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -412,7 +412,8 @@ EXPORT_SYMBOL(truncate_inode_pages_range);
* @mapping: mapping to truncate
* @lstart: offset from which to truncate
*
- * Called under (and serialised by) inode->i_mutex.
+ * Called under (and serialised by) inode->i_rwsem and
+ * mapping->invalidate_lock.
*
* Note: When this function returns, there can be a page in the process of
* deletion (inside __delete_from_page_cache()) in the specified range. Thus
@@ -429,7 +430,7 @@ EXPORT_SYMBOL(truncate_inode_pages);
* truncate_inode_pages_final - truncate *all* pages before inode dies
* @mapping: mapping to truncate
*
- * Called under (and serialized by) inode->i_mutex.
+ * Called under (and serialized by) inode->i_rwsem.
*
* Filesystems have to use this in the .evict_inode path to inform the
* VM that this is the final truncate and the inode is going away.
@@ -748,7 +749,7 @@ EXPORT_SYMBOL(truncate_pagecache);
* setattr function when ATTR_SIZE is passed in.
*
* Must be called with a lock serializing truncates and writes (generally
- * i_mutex but e.g. xfs uses a different lock) and before all filesystem
+ * i_rwsem but e.g. xfs uses a different lock) and before all filesystem
* specific block truncation has been performed.
*/
void truncate_setsize(struct inode *inode, loff_t newsize)
@@ -777,7 +778,7 @@ EXPORT_SYMBOL(truncate_setsize);
*
* The function must be called after i_size is updated so that page fault
* coming after we unlock the page will already see the new i_size.
- * The function must be called while we still hold i_mutex - this not only
+ * The function must be called while we still hold i_rwsem - this not only
* makes sure i_size is stable but also that userspace cannot observe new
* i_size value before we are prepared to store mmap writes at new inode size.
*/