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linux/fs/verity
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Eric Biggers a075bacde2 fsverity: don't drop pagecache at end of FS_IOC_ENABLE_VERITY 
The full pagecache drop at the end of FS_IOC_ENABLE_VERITY is causing
performance problems and is hindering adoption of fsverity.  It was
intended to solve a race condition where unverified pages might be left
in the pagecache.  But actually it doesn't solve it fully.

Since the incomplete solution for this race condition has too much
performance impact for it to be worth it, let's remove it for now.

Fixes: 3fda4c617e ("fs-verity: implement FS_IOC_ENABLE_VERITY ioctl")
Cc: stable@vger.kernel.org
Reviewed-by: Victor Hsieh <victorhsieh@google.com>
Link: https://lore.kernel.org/r/20230314235332.50270-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
2023-03-15 22:50:41 -07:00
..
enable.c fsverity: don't drop pagecache at end of FS_IOC_ENABLE_VERITY 2023-03-15 22:50:41 -07:00
fsverity_private.h fsverity: support verification with tree block size < PAGE_SIZE 2023-01-09 19:06:03 -08:00
hash_algs.c fsverity: replace fsverity_hash_page() with fsverity_hash_block() 2023-01-09 19:06:01 -08:00
init.c fsverity: remove debug messages and CONFIG_FS_VERITY_DEBUG 2023-01-01 15:46:48 -08:00
Kconfig fsverity: remove debug messages and CONFIG_FS_VERITY_DEBUG 2023-01-01 15:46:48 -08:00
Makefile fs-verity: add FS_IOC_READ_VERITY_METADATA ioctl 2021-02-07 14:51:11 -08:00
measure.c fsverity: simplify fsverity_get_digest() 2022-11-29 21:07:41 -08:00
open.c fsverity: support verification with tree block size < PAGE_SIZE 2023-01-09 19:06:03 -08:00
read_metadata.c fs-verity: use kmap_local_page() instead of kmap() 2022-08-19 15:19:55 -07:00
signature.c fsverity: remove debug messages and CONFIG_FS_VERITY_DEBUG 2023-01-01 15:46:48 -08:00
verify.c fsverity: Remove WQ_UNBOUND from fsverity read workqueue 2023-03-14 16:16:36 -07:00