sync_page_range — write and wait on all pages in the passed range
int sync_page_range ( | struct inode * inode, |
struct address_space * mapping, | |
loff_t pos, | |
loff_t count) ; |
inode
target inode
mapping
target address_space
pos
beginning offset in pages to write
count
number of bytes to write
Write and wait upon all the pages in the passed range. This is a “data integrity” operation. It waits upon in-flight writeout before starting and waiting upon new writeout. If there was an IO error, return it.
We need to re-take i_mutex during the generic_osync_inode list walk because it is otherwise livelockable.