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copy: leave lifelock when EOF position decreases

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This commit is contained in:
Thomas Schoebel-Theuer 2017-04-04 07:59:02 +02:00
parent 85ca001f9f
commit d1988b3d7c
3 changed files with 16 additions and 0 deletions
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14
kernel/mars_copy.c
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@ -57,6 +57,8 @@
int mars_copy_overlap = 1;
EXPORT_SYMBOL_GPL(mars_copy_overlap);
int mars_copy_timeout = 180;
int mars_copy_read_prio = MARS_PRIO_NORMAL;
EXPORT_SYMBOL_GPL(mars_copy_read_prio);
@ -730,6 +732,7 @@ bool _is_done(struct copy_brick *brick)
static int _copy_thread(void *data)
{
struct copy_brick *brick = data;
struct timespec last_progress = CURRENT_TIME;
MARS_DBG("--------------- copy_thread %p starting\n", brick);
brick->copy_error = 0;
@ -746,8 +749,19 @@ static int _copy_thread(void *data)
loff_t old_start = brick->copy_start;
loff_t old_end = brick->copy_end;
int progress = 0;
if (old_end > 0) {
progress = _run_copy(brick);
/* abort when no progress is made for a longer time */
if (progress > 0) {
last_progress = CURRENT_TIME;
} else {
struct timespec next_progress = CURRENT_TIME;
next_progress.tv_sec -= mars_copy_timeout;
if (timespec_compare(&next_progress, &last_progress) > 0)
brick->is_aborting = true;
}
}
wait_event_interruptible_timeout(brick->event,

1
kernel/mars_copy.h
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@ -33,6 +33,7 @@
#define INPUT_B_COPY 3
extern int mars_copy_overlap;
extern int mars_copy_timeout;
extern int mars_copy_read_prio;
extern int mars_copy_write_prio;
extern int mars_copy_read_max_fly;

1
kernel/sy_old/mars_proc.c
View File

@ -320,6 +320,7 @@ struct ctl_table mars_table[] = {
#endif
INT_ENTRY("io_flying_count", mars_global_io_flying, 0400),
INT_ENTRY("copy_overlap", mars_copy_overlap, 0600),
INT_ENTRY("copy_timeout", mars_copy_timeout, 0600),
INT_ENTRY("copy_read_prio", mars_copy_read_prio, 0600),
INT_ENTRY("copy_write_prio", mars_copy_write_prio, 0600),
INT_ENTRY("copy_read_max_fly", mars_copy_read_max_fly, 0600),