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SUSE:ALP:Source:Standard:0.1
mdadm
0037-mdadm-Replace-obsolete-usleep-with-nanosle...
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File 0037-mdadm-Replace-obsolete-usleep-with-nanosleep.patch of Package mdadm
From 239b3cc0b5da87e966746533b1873c439db54b16 Mon Sep 17 00:00:00 2001 From: Mateusz Grzonka <mateusz.grzonka@intel.com> Date: Fri, 12 Aug 2022 16:36:02 +0200 Subject: [PATCH 45/61] mdadm: Replace obsolete usleep with nanosleep Patch-mainline: mdadm-4.2+ References: jsc#PED-1009 According to POSIX.1-2001, usleep is considered obsolete. Replace it with a wrapper that uses nanosleep, as recommended in man. Add handy macros for conversions between msec, usec and nsec. Signed-off-by: Mateusz Grzonka <mateusz.grzonka@intel.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com> Signed-off-by: Coly Li <colyli@suse.de> --- Assemble.c | 2 +- Grow.c | 4 ++-- Manage.c | 10 +++++----- managemon.c | 8 ++++---- mdadm.h | 4 ++++ mdmon.c | 4 ++-- super-intel.c | 6 +++--- util.c | 42 +++++++++++++++++++++++++++++++++--------- 8 files changed, 54 insertions(+), 26 deletions(-) diff --git a/Assemble.c b/Assemble.c index 6df6bfb..be2160b 100644 --- a/Assemble.c +++ b/Assemble.c @@ -1947,7 +1947,7 @@ out: break; close(mdfd); } - usleep(usecs); + sleep_for(0, USEC_TO_NSEC(usecs), true); usecs <<= 1; } } diff --git a/Grow.c b/Grow.c index 97f22c7..5780635 100644 --- a/Grow.c +++ b/Grow.c @@ -954,7 +954,7 @@ int start_reshape(struct mdinfo *sra, int already_running, err = sysfs_set_str(sra, NULL, "sync_action", "reshape"); if (err) - sleep(1); + sleep_for(1, 0, true); } while (err && errno == EBUSY && cnt-- > 0); } return err; @@ -5058,7 +5058,7 @@ int Grow_continue_command(char *devname, int fd, } st->ss->getinfo_super(st, content, NULL); if (!content->reshape_active) - sleep(3); + sleep_for(3, 0, true); else break; } while (cnt-- > 0); diff --git a/Manage.c b/Manage.c index e5e6abe..a142f8b 100644 --- a/Manage.c +++ b/Manage.c @@ -244,7 +244,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry) "array_state", "inactive")) < 0 && errno == EBUSY) { - usleep(200000); + sleep_for(0, MSEC_TO_NSEC(200), true); count--; } if (err) { @@ -328,7 +328,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry) sysfs_get_ll(mdi, NULL, "sync_max", &old_sync_max) == 0) { /* must be in the critical section - wait a bit */ delay -= 1; - usleep(100000); + sleep_for(0, MSEC_TO_NSEC(100), true); } if (sysfs_set_str(mdi, NULL, "sync_action", "frozen") != 0) @@ -405,7 +405,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry) * quite started yet. Wait a bit and * check 'sync_action' to see. */ - usleep(10000); + sleep_for(0, MSEC_TO_NSEC(10), true); sysfs_get_str(mdi, NULL, "sync_action", buf, sizeof(buf)); if (strncmp(buf, "reshape", 7) != 0) break; @@ -447,7 +447,7 @@ done: count = 25; err = 0; while (count && fd >= 0 && (err = ioctl(fd, STOP_ARRAY, NULL)) < 0 && errno == EBUSY) { - usleep(200000); + sleep_for(0, MSEC_TO_NSEC(200), true); count --; } if (fd >= 0 && err) { @@ -1105,7 +1105,7 @@ int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv, ret = sysfs_unique_holder(devnm, rdev); if (ret < 2) break; - usleep(100 * 1000); /* 100ms */ + sleep_for(0, MSEC_TO_NSEC(100), true); } while (--count > 0); if (ret == 0) { diff --git a/managemon.c b/managemon.c index 0e9bdf0..a7bfa8f 100644 --- a/managemon.c +++ b/managemon.c @@ -207,7 +207,7 @@ static void replace_array(struct supertype *container, remove_old(); while (pending_discard) { while (discard_this == NULL) - sleep(1); + sleep_for(1, 0, true); remove_old(); } pending_discard = old; @@ -568,7 +568,7 @@ static void manage_member(struct mdstat_ent *mdstat, updates = NULL; while (update_queue_pending || update_queue) { check_update_queue(container); - usleep(15*1000); + sleep_for(0, MSEC_TO_NSEC(15), true); } replace_array(container, a, newa); if (sysfs_set_str(&a->info, NULL, @@ -822,7 +822,7 @@ static void handle_message(struct supertype *container, struct metadata_update * if (msg->len <= 0) while (update_queue_pending || update_queue) { check_update_queue(container); - usleep(15*1000); + sleep_for(0, MSEC_TO_NSEC(15), true); } if (msg->len == 0) { /* ping_monitor */ @@ -836,7 +836,7 @@ static void handle_message(struct supertype *container, struct metadata_update * wakeup_monitor(); while (monitor_loop_cnt - cnt < 0) - usleep(10 * 1000); + sleep_for(0, MSEC_TO_NSEC(10), true); } else if (msg->len == -1) { /* ping_manager */ struct mdstat_ent *mdstat = mdstat_read(1, 0); diff --git a/mdadm.h b/mdadm.h index 163f4a4..add9c0b 100644 --- a/mdadm.h +++ b/mdadm.h @@ -1720,6 +1720,10 @@ extern int cluster_get_dlmlock(void); extern int cluster_release_dlmlock(void); extern void set_dlm_hooks(void); +#define MSEC_TO_NSEC(msec) ((msec) * 1000000) +#define USEC_TO_NSEC(usec) ((usec) * 1000) +extern void sleep_for(unsigned int sec, long nsec, bool wake_after_interrupt); + #define _ROUND_UP(val, base) (((val) + (base) - 1) & ~(base - 1)) #define ROUND_UP(val, base) _ROUND_UP(val, (typeof(val))(base)) #define ROUND_UP_PTR(ptr, base) ((typeof(ptr)) \ diff --git a/mdmon.c b/mdmon.c index c057da6..e9d035e 100644 --- a/mdmon.c +++ b/mdmon.c @@ -99,7 +99,7 @@ static int clone_monitor(struct supertype *container) if (rc) return rc; while (mon_tid == -1) - usleep(10); + sleep_for(0, USEC_TO_NSEC(10), true); pthread_attr_destroy(&attr); mgr_tid = syscall(SYS_gettid); @@ -209,7 +209,7 @@ static void try_kill_monitor(pid_t pid, char *devname, int sock) rv = kill(pid, SIGUSR1); if (rv < 0) break; - usleep(200000); + sleep_for(0, MSEC_TO_NSEC(200), true); } } diff --git a/super-intel.c b/super-intel.c index 4ddfcf9..4d82af3 100644 --- a/super-intel.c +++ b/super-intel.c @@ -5275,7 +5275,7 @@ static int get_super_block(struct intel_super **super_list, char *devnm, char *d /* retry the load if we might have raced against mdmon */ if (err == 3 && devnm && mdmon_running(devnm)) for (retry = 0; retry < 3; retry++) { - usleep(3000); + sleep_for(0, MSEC_TO_NSEC(3), true); err = load_and_parse_mpb(dfd, s, NULL, keep_fd); if (err != 3) break; @@ -5377,7 +5377,7 @@ static int load_super_imsm(struct supertype *st, int fd, char *devname) if (mdstat && mdmon_running(mdstat->devnm) && getpid() != mdmon_pid(mdstat->devnm)) { for (retry = 0; retry < 3; retry++) { - usleep(3000); + sleep_for(0, MSEC_TO_NSEC(3), true); rv = load_and_parse_mpb(fd, super, devname, 0); if (rv != 3) break; @@ -12084,7 +12084,7 @@ int wait_for_reshape_imsm(struct mdinfo *sra, int ndata) close(fd); return 1; } - usleep(30000); + sleep_for(0, MSEC_TO_NSEC(30), true); } else break; } while (retry--); diff --git a/util.c b/util.c index 38f0420..ca48d97 100644 --- a/util.c +++ b/util.c @@ -166,7 +166,7 @@ retry: pr_err("error %d when get PW mode on lock %s\n", errno, str); /* let's try several times if EAGAIN happened */ if (dlm_lock_res->lksb.sb_status == EAGAIN && retry_count < 10) { - sleep(10); + sleep_for(10, 0, true); retry_count++; goto retry; } @@ -1085,7 +1085,7 @@ int open_dev_excl(char *devnm) int i; int flags = O_RDWR; dev_t devid = devnm2devid(devnm); - long delay = 1000; + unsigned int delay = 1; // miliseconds sprintf(buf, "%d:%d", major(devid), minor(devid)); for (i = 0; i < 25; i++) { @@ -1098,8 +1098,8 @@ int open_dev_excl(char *devnm) } if (errno != EBUSY) return fd; - usleep(delay); - if (delay < 200000) + sleep_for(0, MSEC_TO_NSEC(delay), true); + if (delay < 200) delay *= 2; } return -1; @@ -1123,7 +1123,7 @@ void wait_for(char *dev, int fd) { int i; struct stat stb_want; - long delay = 1000; + unsigned int delay = 1; // miliseconds if (fstat(fd, &stb_want) != 0 || (stb_want.st_mode & S_IFMT) != S_IFBLK) @@ -1135,8 +1135,8 @@ void wait_for(char *dev, int fd) (stb.st_mode & S_IFMT) == S_IFBLK && (stb.st_rdev == stb_want.st_rdev)) return; - usleep(delay); - if (delay < 200000) + sleep_for(0, MSEC_TO_NSEC(delay), true); + if (delay < 200) delay *= 2; } if (i == 25) @@ -1821,7 +1821,7 @@ int hot_remove_disk(int mdfd, unsigned long dev, int force) while ((ret = ioctl(mdfd, HOT_REMOVE_DISK, dev)) == -1 && errno == EBUSY && cnt-- > 0) - usleep(10000); + sleep_for(0, MSEC_TO_NSEC(10), true); return ret; } @@ -1834,7 +1834,7 @@ int sys_hot_remove_disk(int statefd, int force) while ((ret = write(statefd, "remove", 6)) == -1 && errno == EBUSY && cnt-- > 0) - usleep(10000); + sleep_for(0, MSEC_TO_NSEC(10), true); return ret == 6 ? 0 : -1; } @@ -2375,3 +2375,27 @@ out: close(fd_zero); return ret; } + +/** + * sleep_for() - Sleeps for specified time. + * @sec: Seconds to sleep for. + * @nsec: Nanoseconds to sleep for, has to be less than one second. + * @wake_after_interrupt: If set, wake up if interrupted. + * + * Function immediately returns if error different than EINTR occurs. + */ +void sleep_for(unsigned int sec, long nsec, bool wake_after_interrupt) +{ + struct timespec delay = {.tv_sec = sec, .tv_nsec = nsec}; + + assert(nsec < MSEC_TO_NSEC(1000)); + + do { + errno = 0; + nanosleep(&delay, &delay); + if (errno != 0 && errno != EINTR) { + pr_err("Error sleeping for %us %ldns: %s\n", sec, nsec, strerror(errno)); + return; + } + } while (!wake_after_interrupt && errno == EINTR); +} -- 2.35.3
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