fs/xfs/xfs_file.c

151 	 * inode size in case of an extending write.
159 	 * Any inode that has dirty modifications in the log is pinned.  The
230 	/* get a shared lock if no remapping in progress */
335 	struct file		*in,
341 	struct inode		*inode = file_inode(in);
354 	ret = filemap_splice_read(in, ppos, pipe, len, flags);
399 	 * For changing security info in file_remove_privs() we need i_rwsem
420 	 * We need to serialise against EOF updates that occur in IO completions
452 			 * We now have an IO submission barrier in place, but
517 	 * Unwritten conversion updates the in-core isize after extent
528 	 * We need to update the in-core inode size here so that we don't end up
529 	 * with the on-disk inode size being outside the in-core inode size. We
535 	 * here can result in EOF moving backwards and Bad Things Happen when
587 	 * the iolock back to shared if we had to take the exclusive lock in
607  * them to be done in parallel with reads and other direct I/O writes.  However,
611  * the unaligned I/O so that we don't get racing block zeroing in the dio layer.
635 	 * don't even bother trying the fast path in this case.
665 	 * in-flight.  Otherwise we risk data corruption due to unwritten extent
839 		 * write *only* in the case that we're doing a reflink
899 	 * the on disk and in memory inode sizes, and the operations that follow
900 	 * require the in-memory size to be fully up-to-date.
911 	 * the required flush for collapse in xfs_prepare_shift().
941 		 * in which case it is effectively a truncate operation
1073 	 * Operations creating pages in page cache need protection from hole
1277  * Locking for serialisation of IO during page faults. This results in a lock