• Jaegeuk Kim's avatar
    f2fs: fix not to allocate unnecessary blocks during fallocate · 98397ff3
    Jaegeuk Kim authored
    
    
    This patch fixes the fallocate bug like below. (See xfstests/255)
    
    In fallocate(fd, 0, 20480),
    expand_inode_data processes
    	for (index = pg_start; index <= pg_end; index++) {
    		f2fs_reserve_block();
    		...
    	}
    
    So, even though fallocate requests 20480, 5 blocks, f2fs allocates 6 blocks
    including pg_end.
    So, this patch adds one condition to avoid block allocation.
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
    98397ff3
file.c 19 KB