NAME
sync_page_range_nolock - write & wait on all pages in the passed range without locking
SYNOPSIS
int sync_page_range_nolock(struct inode * inode, struct address_space * mapping, loff_t pos, loff_t count);
ARGUMENTS
inode
target inode
mapping
target address_space
pos
beginning offset in pages to write
count
number of bytes to write
NOTE
Holding i_mutex across sync_page_range_nolock is not a good idea as it forces O_SYNC writers to different parts of the same file to be serialised right until io completion.