Revision eacc6dfaea963ef61540abb31ad7829be5eff284 authored by Jens Axboe on 07 January 2020, 20:08:56 UTC, committed by Jens Axboe on 07 January 2020, 20:08:56 UTC
We currently punt any short read on a regular file to async context, but this fails if the short read is due to running into EOF. This is especially problematic since we only do the single prep for commands now, as we don't reset kiocb->ki_pos. This can result in a 4k read on a 1k file returning zero, as we detect the short read and then retry from async context. At the time of retry, the position is now 1k, and we end up reading nothing, and hence return 0. Instead of trying to patch around the fact that short reads can be legitimate and won't succeed in case of retry, remove the logic to punt a short read to async context. Simply return it. Signed-off-by: Jens Axboe <axboe@kernel.dk>
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| 842 | ||
| crypto | ||
| dim | ||
| fonts | ||
| kunit | ||
| livepatch | ||
| lz4 | ||
| lzo | ||
| math | ||
| mpi | ||
| raid6 | ||
| reed_solomon | ||
| vdso | ||
| xz | ||
| zlib_deflate | ||
| zlib_inflate | ||
| zstd | ||
| .gitignore | -rw-r--r-- | 98 bytes |
| Kconfig | -rw-r--r-- | 14.7 KB |
| Kconfig.debug | -rw-r--r-- | 71.2 KB |
| Kconfig.kasan | -rw-r--r-- | 5.9 KB |
| Kconfig.kgdb | -rw-r--r-- | 4.1 KB |
| Kconfig.ubsan | -rw-r--r-- | 1.7 KB |
| Makefile | -rw-r--r-- | 9.6 KB |
| argv_split.c | -rw-r--r-- | 2.1 KB |
| ashldi3.c | -rw-r--r-- | 541 bytes |
| ashrdi3.c | -rw-r--r-- | 565 bytes |
| asn1_decoder.c | -rw-r--r-- | 13.2 KB |
| assoc_array.c | -rw-r--r-- | 51.8 KB |
| atomic64.c | -rw-r--r-- | 4.5 KB |
| atomic64_test.c | -rw-r--r-- | 6.4 KB |
| audit.c | -rw-r--r-- | 1.8 KB |
| bcd.c | -rw-r--r-- | 297 bytes |
| bch.c | -rw-r--r-- | 36.1 KB |
| bitmap.c | -rw-r--r-- | 36.3 KB |
| bitrev.c | -rw-r--r-- | 1.9 KB |
| bsearch.c | -rw-r--r-- | 1.4 KB |
| btree.c | -rw-r--r-- | 19.2 KB |
| bucket_locks.c | -rw-r--r-- | 1.4 KB |
| bug.c | -rw-r--r-- | 5.8 KB |
| build_OID_registry | -rwxr-xr-x | 4.5 KB |
| bust_spinlocks.c | -rw-r--r-- | 676 bytes |
| check_signature.c | -rw-r--r-- | 635 bytes |
| checksum.c | -rw-r--r-- | 4.8 KB |
| clz_ctz.c | -rw-r--r-- | 1.2 KB |
| clz_tab.c | -rw-r--r-- | 891 bytes |
| cmdline.c | -rw-r--r-- | 5.1 KB |
| cmpdi2.c | -rw-r--r-- | 501 bytes |
| compat_audit.c | -rw-r--r-- | 832 bytes |
| cpu_rmap.c | -rw-r--r-- | 7.6 KB |
| cpumask.c | -rw-r--r-- | 6.0 KB |
| crc-ccitt.c | -rw-r--r-- | 5.6 KB |
| crc-itu-t.c | -rw-r--r-- | 2.7 KB |
| crc-t10dif.c | -rw-r--r-- | 2.9 KB |
| crc16.c | -rw-r--r-- | 2.7 KB |
| crc32.c | -rw-r--r-- | 9.3 KB |
| crc32defs.h | -rw-r--r-- | 1.6 KB |
| crc32test.c | -rw-r--r-- | 37.5 KB |
| crc4.c | -rw-r--r-- | 1003 bytes |
| crc64.c | -rw-r--r-- | 1.7 KB |
| crc7.c | -rw-r--r-- | 2.5 KB |
| crc8.c | -rw-r--r-- | 2.4 KB |
| ctype.c | -rw-r--r-- | 1.4 KB |
| debug_info.c | -rw-r--r-- | 777 bytes |
| debug_locks.c | -rw-r--r-- | 1.2 KB |
| debugobjects.c | -rw-r--r-- | 34.2 KB |
| dec_and_lock.c | -rw-r--r-- | 1.2 KB |
| decompress.c | -rw-r--r-- | 1.7 KB |
| decompress_bunzip2.c | -rw-r--r-- | 23.5 KB |
| decompress_inflate.c | -rw-r--r-- | 4.5 KB |
| decompress_unlz4.c | -rw-r--r-- | 4.0 KB |
| decompress_unlzma.c | -rw-r--r-- | 15.8 KB |
| decompress_unlzo.c | -rw-r--r-- | 6.4 KB |
| decompress_unxz.c | -rw-r--r-- | 10.9 KB |
| devres.c | -rw-r--r-- | 12.3 KB |
| digsig.c | -rw-r--r-- | 5.5 KB |
| dump_stack.c | -rw-r--r-- | 3.2 KB |
| dynamic_debug.c | -rw-r--r-- | 26.1 KB |
| dynamic_queue_limits.c | -rw-r--r-- | 4.3 KB |
| earlycpio.c | -rw-r--r-- | 3.6 KB |
| errname.c | -rw-r--r-- | 3.6 KB |
| error-inject.c | -rw-r--r-- | 5.4 KB |
| errseq.c | -rw-r--r-- | 6.6 KB |
| extable.c | -rw-r--r-- | 3.0 KB |
| fault-inject.c | -rw-r--r-- | 5.8 KB |
| fdt.c | -rw-r--r-- | 69 bytes |
| fdt_empty_tree.c | -rw-r--r-- | 80 bytes |
| fdt_ro.c | -rw-r--r-- | 72 bytes |
| fdt_rw.c | -rw-r--r-- | 72 bytes |
| fdt_strerror.c | -rw-r--r-- | 78 bytes |
| fdt_sw.c | -rw-r--r-- | 72 bytes |
| fdt_wip.c | -rw-r--r-- | 73 bytes |
| find_bit.c | -rw-r--r-- | 5.4 KB |
| find_bit_benchmark.c | -rw-r--r-- | 3.9 KB |
| flex_proportions.c | -rw-r--r-- | 6.9 KB |
| gen_crc32table.c | -rw-r--r-- | 3.3 KB |
| gen_crc64table.c | -rw-r--r-- | 1.4 KB |
| genalloc.c | -rw-r--r-- | 26.1 KB |
| generic-radix-tree.c | -rw-r--r-- | 5.3 KB |
| glob.c | -rw-r--r-- | 3.5 KB |
| globtest.c | -rw-r--r-- | 4.2 KB |
| hexdump.c | -rw-r--r-- | 7.3 KB |
| hweight.c | -rw-r--r-- | 1.9 KB |
| idr.c | -rw-r--r-- | 17.3 KB |
| inflate.c | -rw-r--r-- | 38.7 KB |
| interval_tree.c | -rw-r--r-- | 540 bytes |
| interval_tree_test.c | -rw-r--r-- | 3.4 KB |
| iomap.c | -rw-r--r-- | 9.1 KB |
| iomap_copy.c | -rw-r--r-- | 2.2 KB |
| iommu-helper.c | -rw-r--r-- | 755 bytes |
| ioremap.c | -rw-r--r-- | 6.1 KB |
| iov_iter.c | -rw-r--r-- | 41.9 KB |
| irq_poll.c | -rw-r--r-- | 5.4 KB |
| irq_regs.c | -rw-r--r-- | 394 bytes |
| is_single_threaded.c | -rw-r--r-- | 1.2 KB |
| kasprintf.c | -rw-r--r-- | 1.4 KB |
| kfifo.c | -rw-r--r-- | 12.1 KB |
| klist.c | -rw-r--r-- | 10.4 KB |
| kobject.c | -rw-r--r-- | 27.9 KB |
| kobject_uevent.c | -rw-r--r-- | 18.8 KB |
| kstrtox.c | -rw-r--r-- | 10.5 KB |
| kstrtox.h | -rw-r--r-- | 293 bytes |
| libcrc32c.c | -rw-r--r-- | 2.0 KB |
| list-test.c | -rw-r--r-- | 17.4 KB |
| list_debug.c | -rw-r--r-- | 1.8 KB |
| list_sort.c | -rw-r--r-- | 8.4 KB |
| llist.c | -rw-r--r-- | 2.5 KB |
| locking-selftest-hardirq.h | -rw-r--r-- | 246 bytes |
| locking-selftest-mutex.h | -rw-r--r-- | 159 bytes |
| locking-selftest-rlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock.h | -rw-r--r-- | 197 bytes |
| locking-selftest-rsem.h | -rw-r--r-- | 202 bytes |
| locking-selftest-rtmutex.h | -rw-r--r-- | 162 bytes |
| locking-selftest-softirq.h | -rw-r--r-- | 246 bytes |
| locking-selftest-spin-hardirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin-softirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin.h | -rw-r--r-- | 157 bytes |
| locking-selftest-wlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock.h | -rw-r--r-- | 197 bytes |
| locking-selftest-wsem.h | -rw-r--r-- | 202 bytes |
| locking-selftest.c | -rw-r--r-- | 43.7 KB |
| lockref.c | -rw-r--r-- | 4.5 KB |
| logic_pio.c | -rw-r--r-- | 8.4 KB |
| lru_cache.c | -rw-r--r-- | 18.8 KB |
| lshrdi3.c | -rw-r--r-- | 559 bytes |
| memcat_p.c | -rw-r--r-- | 753 bytes |
| memory-notifier-error-inject.c | -rw-r--r-- | 1.1 KB |
| memregion.c | -rw-r--r-- | 400 bytes |
| memweight.c | -rw-r--r-- | 1.0 KB |
| muldi3.c | -rw-r--r-- | 1.7 KB |
| net_utils.c | -rw-r--r-- | 640 bytes |
| netdev-notifier-error-inject.c | -rw-r--r-- | 1.5 KB |
| nlattr.c | -rw-r--r-- | 22.6 KB |
| nmi_backtrace.c | -rw-r--r-- | 3.0 KB |
| nodemask.c | -rw-r--r-- | 653 bytes |
| notifier-error-inject.c | -rw-r--r-- | 2.5 KB |
| notifier-error-inject.h | -rw-r--r-- | 653 bytes |
| objagg.c | -rw-r--r-- | 28.3 KB |
| of-reconfig-notifier-error-inject.c | -rw-r--r-- | 1.3 KB |
| oid_registry.c | -rw-r--r-- | 3.7 KB |
| once.c | -rw-r--r-- | 1.4 KB |
| packing.c | -rw-r--r-- | 6.5 KB |
| parman.c | -rw-r--r-- | 10.6 KB |
| parser.c | -rw-r--r-- | 8.1 KB |
| pci_iomap.c | -rw-r--r-- | 4.2 KB |
| percpu-refcount.c | -rw-r--r-- | 13.5 KB |
| percpu_counter.c | -rw-r--r-- | 5.8 KB |
| percpu_test.c | -rw-r--r-- | 3.2 KB |
| plist.c | -rw-r--r-- | 5.9 KB |
| pm-notifier-error-inject.c | -rw-r--r-- | 1.2 KB |
| radix-tree.c | -rw-r--r-- | 43.3 KB |
| random32.c | -rw-r--r-- | 12.8 KB |
| ratelimit.c | -rw-r--r-- | 1.6 KB |
| rbtree.c | -rw-r--r-- | 17.1 KB |
| rbtree_test.c | -rw-r--r-- | 9.4 KB |
| refcount.c | -rw-r--r-- | 4.8 KB |
| rhashtable.c | -rw-r--r-- | 29.4 KB |
| sbitmap.c | -rw-r--r-- | 16.3 KB |
| scatterlist.c | -rw-r--r-- | 25.2 KB |
| seq_buf.c | -rw-r--r-- | 9.9 KB |
| sg_pool.c | -rw-r--r-- | 4.2 KB |
| sg_split.c | -rw-r--r-- | 5.0 KB |
| sha1.c | -rw-r--r-- | 6.1 KB |
| show_mem.c | -rw-r--r-- | 1.1 KB |
| siphash.c | -rw-r--r-- | 12.0 KB |
| smp_processor_id.c | -rw-r--r-- | 1.4 KB |
| sort.c | -rw-r--r-- | 8.4 KB |
| stackdepot.c | -rw-r--r-- | 8.6 KB |
| stmp_device.c | -rw-r--r-- | 1.9 KB |
| string.c | -rw-r--r-- | 23.5 KB |
| string_helpers.c | -rw-r--r-- | 13.9 KB |
| strncpy_from_user.c | -rw-r--r-- | 3.2 KB |
| strnlen_user.c | -rw-r--r-- | 3.3 KB |
| syscall.c | -rw-r--r-- | 2.5 KB |
| test-kstrtox.c | -rw-r--r-- | 17.3 KB |
| test-string_helpers.c | -rw-r--r-- | 10.3 KB |
| test_bitfield.c | -rw-r--r-- | 4.3 KB |
| test_bitmap.c | -rw-r--r-- | 13.7 KB |
| test_blackhole_dev.c | -rw-r--r-- | 2.5 KB |
| test_bpf.c | -rw-r--r-- | 161.1 KB |
| test_debug_virtual.c | -rw-r--r-- | 981 bytes |
| test_firmware.c | -rw-r--r-- | 22.9 KB |
| test_hash.c | -rw-r--r-- | 6.3 KB |
| test_hexdump.c | -rw-r--r-- | 6.3 KB |
| test_ida.c | -rw-r--r-- | 4.3 KB |
| test_kasan.c | -rw-r--r-- | 16.8 KB |
| test_kmod.c | -rw-r--r-- | 30.0 KB |
| test_list_sort.c | -rw-r--r-- | 3.3 KB |
| test_memcat_p.c | -rw-r--r-- | 2.2 KB |
| test_meminit.c | -rw-r--r-- | 9.7 KB |
| test_module.c | -rw-r--r-- | 794 bytes |
| test_objagg.c | -rw-r--r-- | 24.6 KB |
| test_overflow.c | -rw-r--r-- | 22.3 KB |
| test_parman.c | -rw-r--r-- | 11.2 KB |
| test_printf.c | -rw-r--r-- | 16.0 KB |
| test_rhashtable.c | -rw-r--r-- | 20.0 KB |
| test_siphash.c | -rw-r--r-- | 7.5 KB |
| test_sort.c | -rw-r--r-- | 870 bytes |
| test_stackinit.c | -rw-r--r-- | 10.9 KB |
| test_static_key_base.c | -rw-r--r-- | 1.6 KB |
| test_static_keys.c | -rw-r--r-- | 5.6 KB |
| test_string.c | -rw-r--r-- | 3.8 KB |
| test_strscpy.c | -rw-r--r-- | 4.0 KB |
| test_sysctl.c | -rw-r--r-- | 3.7 KB |
| test_ubsan.c | -rw-r--r-- | 2.4 KB |
| test_user_copy.c | -rw-r--r-- | 9.1 KB |
| test_uuid.c | -rw-r--r-- | 3.4 KB |
| test_vmalloc.c | -rw-r--r-- | 10.6 KB |
| test_xarray.c | -rw-r--r-- | 42.0 KB |
| textsearch.c | -rw-r--r-- | 9.3 KB |
| timerqueue.c | -rw-r--r-- | 2.5 KB |
| ts_bm.c | -rw-r--r-- | 5.1 KB |
| ts_fsm.c | -rw-r--r-- | 10.4 KB |
| ts_kmp.c | -rw-r--r-- | 4.1 KB |
| ubsan.c | -rw-r--r-- | 10.0 KB |
| ubsan.h | -rw-r--r-- | 1.6 KB |
| ucmpdi2.c | -rw-r--r-- | 568 bytes |
| ucs2_string.c | -rw-r--r-- | 2.5 KB |
| usercopy.c | -rw-r--r-- | 2.0 KB |
| uuid.c | -rw-r--r-- | 2.6 KB |
| vsprintf.c | -rw-r--r-- | 80.9 KB |
| win_minmax.c | -rw-r--r-- | 3.4 KB |
| xarray.c | -rw-r--r-- | 52.8 KB |
| xxhash.c | -rw-r--r-- | 12.7 KB |
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