TRUNCATE_PAGECACHE(9) Memory Management in Linux TRUNCATE_PAGECACHE(9)NAME
truncate_pagecache - unmap and remove pagecache that has been truncated
SYNOPSIS
void truncate_pagecache(struct inode * inode, loff_t old, loff_t new);
ARGUMENTS
inode
inode
old
old file offset
new
new file offset
DESCRIPTION
inode's new i_size must already be written before truncate_pagecache is called.
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 2.6. July 2010 TRUNCATE_PAGECACHE(9)
Check Out this Related Man Page
CLRI(8) BSD System Manager's Manual CLRI(8)NAME
clri -- clear an inode
SYNOPSIS
clri special_device inode_number ...
DESCRIPTION
Clri is obsoleted for normal file system repair work by fsck(8).
Clri zeros out the inodes with the specified inode number(s) on the filesystem residing on the given special_device. The fsck(8) utility is
usually run after clri to reclaim the zero'ed inode(s) and the blocks previously claimed by those inode(s). Both read and write permission
are required on the specified special_device.
The primary purpose of this routine is to remove a file which for some reason is not being properly handled by fsck(8). Once removed, it is
anticipated that fsck(8) will be able to clean up the resulting mess.
SEE ALSO fsck(8), fsdb(8), icheck(8), ncheck(8)BUGS
If the file is open, the work of clri will be lost when the inode is written back to disk from the inode cache.
4th Berkeley Distribution April 19, 1994 4th Berkeley Distribution
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