table of contents
other versions
| TRUNCATE_SETSIZE(9) | Memory Management in Linux | TRUNCATE_SETSIZE(9) |
NAME¶
truncate_setsize - update inode and pagecache for a new file size
SYNOPSIS¶
void truncate_setsize(struct inode * inode, loff_t newsize);
ARGUMENTS¶
struct inode * inode
inode
loff_t newsize
new file size
DESCRIPTION¶
truncate_setsize updates i_size and performs pagecache truncation (if necessary) to newsize. It will be typically be called from the filesystem's 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 specific block truncation has been performed.
COPYRIGHT¶
| July 2017 | Kernel Hackers Manual 4.11 |