diff options
Diffstat (limited to 'mm/truncate.c')
| -rw-r--r-- | mm/truncate.c | 9 |
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. */ |