| truncate_pagecache_range(9) - phpMan
TRUNCATE_PAGECACHE_R(9) Memory Management in Linux TRUNCATE_PAGECACHE_R(9)
NAME
truncate_pagecache_range - unmap and remove pagecache that is hole-punched
SYNOPSIS
void truncate_pagecache_range(struct inode * inode, loff_t lstart, loff_t lend);
ARGUMENTS
inode
inode
lstart
offset of beginning of hole
lend
offset of last byte of hole
DESCRIPTION
This function should typically be called before the filesystem releases resources
associated with the freed range (eg. deallocates blocks). This way, pagecache will always
stay logically coherent with on-disk format, and the filesystem would not have to deal
with situations such as writepage being called for a page that has already had its
underlying blocks deallocated.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 TRUNCATE_PAGECACHE_R(9)
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