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bcachefs: thread_with_stdio: suppress hung task warning 

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-02-08 20:41:34 -05:00
parent 5c3273ec3c
commit a5a650d647
1 changed files with 15 additions and 2 deletions
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17
fs/bcachefs/thread_with_file.c
View File

@ -9,6 +9,7 @@
#include <linux/kthread.h>
#include <linux/pagemap.h>
#include <linux/poll.h>
#include <linux/sched/sysctl.h>
void bch2_thread_with_file_exit(struct thread_with_file *thr)
{
@ -264,7 +265,15 @@ int bch2_stdio_redirect_read(struct stdio_redirect *stdio, char *ubuf, size_t le
{
struct stdio_buf *buf = &stdio->input;
wait_event(buf->wait, stdio_redirect_has_input(stdio));
/*
* we're waiting on user input (or for the file descriptor to be
* closed), don't want a hung task warning:
*/
do {
wait_event_timeout(buf->wait, stdio_redirect_has_input(stdio),
sysctl_hung_task_timeout_secs * HZ / 2);
} while (!stdio_redirect_has_input(stdio));
if (stdio->done)
return -1;
@ -287,7 +296,11 @@ int bch2_stdio_redirect_readline(struct stdio_redirect *stdio, char *ubuf, size_
size_t copied = 0;
ssize_t ret = 0;
again:
wait_event(buf->wait, stdio_redirect_has_input(stdio));
do {
wait_event_timeout(buf->wait, stdio_redirect_has_input(stdio),
sysctl_hung_task_timeout_secs * HZ / 2);
} while (!stdio_redirect_has_input(stdio));
if (stdio->done) {
ret = -1;
goto out;