kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-24 19:10:26 +00:00
Code Issues Releases Packages Activity
linux/fs/cachefiles
History
Zizhi Wo ae8c963906 cachefiles: Fix missing pos updates in cachefiles_ondemand_fd_write_iter() 
[ Upstream commit 56f4856b42 ]

In the erofs on-demand loading scenario, read and write operations are
usually delivered through "off" and "len" contained in read req in user
mode. Naturally, pwrite is used to specify a specific offset to complete
write operations.

However, if the write(not pwrite) syscall is called multiple times in the
read-ahead scenario, we need to manually update ki_pos after each write
operation to update file->f_pos.

This step is currently missing from the cachefiles_ondemand_fd_write_iter
function, added to address this issue.

Fixes: c838305450 ("cachefiles: notify the user daemon when looking up cookie")
Signed-off-by: Zizhi Wo <wozizhi@huawei.com>
Link: https://lore.kernel.org/r/20241107110649.3980193-3-wozizhi@huawei.com
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-09 10:31:45 +01:00
..
cache.c cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() 2024-07-25 09:50:58 +02:00
daemon.c cachefiles: add missing lock protection when polling 2024-07-18 13:21:11 +02:00
error_inject.c fs/cachefiles: simplify one-level sysctl registration for cachefiles_sysctls 2023-04-13 11:49:35 -07:00
interface.c cachefiles: extract ondemand info field from cachefiles_object 2024-06-21 14:38:27 +02:00
internal.h cachefiles: cyclic allocation of msg_id to avoid reuse 2024-07-18 13:21:11 +02:00
io.c cachefiles: use kiocb_{start,end}_write() helpers 2023-08-21 17:27:27 +02:00
Kconfig cachefiles: notify the user daemon when looking up cookie 2022-05-18 00:11:17 +08:00
key.c cachefiles: Implement key to filename encoding 2022-01-07 13:42:16 +00:00
main.c cachefiles: Implement object lifecycle funcs 2022-01-07 13:42:08 +00:00
Makefile cachefiles: notify the user daemon when looking up cookie 2022-05-18 00:11:17 +08:00
namei.c cachefiles: fix dentry leak in cachefiles_open_file() 2024-10-10 11:57:57 +02:00
ondemand.c cachefiles: Fix missing pos updates in cachefiles_ondemand_fd_write_iter() 2024-12-09 10:31:45 +01:00
security.c cachefiles: Add security derivation 2022-01-07 13:41:14 +00:00
volume.c cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() 2024-07-25 09:50:58 +02:00
xattr.c cachefiles: Fix non-taking of sb_writers around set/removexattr 2024-10-04 16:29:00 +02:00