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TRUNCATE_SETSIZE(9) | Memory Management in Linux | TRUNCATE_SETSIZE(9) |
NAME¶
truncate_setsize - update inode and pagecache for a new file sizeSYNOPSIS¶
void truncate_setsize(struct inode * inode, loff_t newsize);
ARGUMENTS¶
inodeinode
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¶
April 2019 | Kernel Hackers Manual 4.9. |