search for: blkdev_get_block

...52:13 localhost kernel: [block_read_full_page+404/672] block_read_full_page+0x194/0x2a0 Nov 1 13:52:13 localhost kernel: [add_to_page_cache+112/208] add_to_page_cache+0x70/0xd0 Nov 1 13:52:13 localhost kernel: [read_pages+241/320] read_pages +0xf1/0x140 Nov 1 13:52:13 localhost kernel: [blkdev_get_block+0/96] blkdev_get_block+0x0/0x60 Nov 1 13:52:13 localhost kernel: [__alloc_pages+739/1056] __alloc_pages+0x2e3/0x420 Nov 1 13:52:13 localhost kernel: [__do_page_cache_readahead +247/400] __do_page_cache_readahead+0xf7/0x190 Nov 1 13:52:13 localhost kernel: [blockable_page_cache_readahead...

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

.../0x99 Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff811202f4>] ? block_read_full_page+0x48/0x1ed Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff810f6f79>] ? mem_cgroup_cache_charge+0x23/0xee Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff81122c41>] ? blkdev_get_blocks+0x83/0x83 Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff810b4845>] ? spin_unlock_irq+0xa/0xb Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff810b58d0>] ? add_to_page_cache_locked+0x9c/0xe0 Jul 16 20:41:01 placka kernel: [28018.413801] [<ffffffff810beb6b>] ? _...