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path: root/fs/ext4/super.c
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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c75
1 files changed, 50 insertions, 25 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b7f7922061be..5863fd22e90b 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -312,6 +312,24 @@ void ext4_itable_unused_set(struct super_block *sb,
bg->bg_itable_unused_hi = cpu_to_le16(count >> 16);
}
+static void __ext4_update_tstamp(__le32 *lo, __u8 *hi)
+{
+ time64_t now = ktime_get_real_seconds();
+
+ now = clamp_val(now, 0, (1ull << 40) - 1);
+
+ *lo = cpu_to_le32(lower_32_bits(now));
+ *hi = upper_32_bits(now);
+}
+
+static time64_t __ext4_get_tstamp(__le32 *lo, __u8 *hi)
+{
+ return ((time64_t)(*hi) << 32) + le32_to_cpu(*lo);
+}
+#define ext4_update_tstamp(es, tstamp) \
+ __ext4_update_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi)
+#define ext4_get_tstamp(es, tstamp) \
+ __ext4_get_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi)
static void __save_error_info(struct super_block *sb, const char *func,
unsigned int line)
@@ -322,11 +340,12 @@ static void __save_error_info(struct super_block *sb, const char *func,
if (bdev_read_only(sb->s_bdev))
return;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
- es->s_last_error_time = cpu_to_le32(get_seconds());
+ ext4_update_tstamp(es, s_last_error_time);
strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
es->s_last_error_line = cpu_to_le32(line);
if (!es->s_first_error_time) {
es->s_first_error_time = es->s_last_error_time;
+ es->s_first_error_time_hi = es->s_last_error_time_hi;
strncpy(es->s_first_error_func, func,
sizeof(es->s_first_error_func));
es->s_first_error_line = cpu_to_le32(line);
@@ -776,26 +795,26 @@ void ext4_mark_group_bitmap_corrupted(struct super_block *sb,
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_group_info *grp = ext4_get_group_info(sb, group);
struct ext4_group_desc *gdp = ext4_get_group_desc(sb, group, NULL);
+ int ret;
- if ((flags & EXT4_GROUP_INFO_BBITMAP_CORRUPT) &&
- !EXT4_MB_GRP_BBITMAP_CORRUPT(grp)) {
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT,
- &grp->bb_state);
+ if (flags & EXT4_GROUP_INFO_BBITMAP_CORRUPT) {
+ ret = ext4_test_and_set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT,
+ &grp->bb_state);
+ if (!ret)
+ percpu_counter_sub(&sbi->s_freeclusters_counter,
+ grp->bb_free);
}
- if ((flags & EXT4_GROUP_INFO_IBITMAP_CORRUPT) &&
- !EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
- if (gdp) {
+ if (flags & EXT4_GROUP_INFO_IBITMAP_CORRUPT) {
+ ret = ext4_test_and_set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT,
+ &grp->bb_state);
+ if (!ret && gdp) {
int count;
count = ext4_free_inodes_count(sb, gdp);
percpu_counter_sub(&sbi->s_freeinodes_counter,
count);
}
- set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT,
- &grp->bb_state);
}
}
@@ -2174,8 +2193,8 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
"warning: maximal mount count reached, "
"running e2fsck is recommended");
else if (le32_to_cpu(es->s_checkinterval) &&
- (le32_to_cpu(es->s_lastcheck) +
- le32_to_cpu(es->s_checkinterval) <= get_seconds()))
+ (ext4_get_tstamp(es, s_lastcheck) +
+ le32_to_cpu(es->s_checkinterval) <= ktime_get_real_seconds()))
ext4_msg(sb, KERN_WARNING,
"warning: checktime reached, "
"running e2fsck is recommended");
@@ -2184,7 +2203,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
if (!(__s16) le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
- es->s_mtime = cpu_to_le32(get_seconds());
+ ext4_update_tstamp(es, s_mtime);
ext4_update_dynamic_rev(sb);
if (sbi->s_journal)
ext4_set_feature_journal_needs_recovery(sb);
@@ -2875,8 +2894,9 @@ static void print_daily_error_info(struct timer_list *t)
ext4_msg(sb, KERN_NOTICE, "error count since last fsck: %u",
le32_to_cpu(es->s_error_count));
if (es->s_first_error_time) {
- printk(KERN_NOTICE "EXT4-fs (%s): initial error at time %u: %.*s:%d",
- sb->s_id, le32_to_cpu(es->s_first_error_time),
+ printk(KERN_NOTICE "EXT4-fs (%s): initial error at time %llu: %.*s:%d",
+ sb->s_id,
+ ext4_get_tstamp(es, s_first_error_time),
(int) sizeof(es->s_first_error_func),
es->s_first_error_func,
le32_to_cpu(es->s_first_error_line));
@@ -2889,8 +2909,9 @@ static void print_daily_error_info(struct timer_list *t)
printk(KERN_CONT "\n");
}
if (es->s_last_error_time) {
- printk(KERN_NOTICE "EXT4-fs (%s): last error at time %u: %.*s:%d",
- sb->s_id, le32_to_cpu(es->s_last_error_time),
+ printk(KERN_NOTICE "EXT4-fs (%s): last error at time %llu: %.*s:%d",
+ sb->s_id,
+ ext4_get_tstamp(es, s_last_error_time),
(int) sizeof(es->s_last_error_func),
es->s_last_error_func,
le32_to_cpu(es->s_last_error_line));
@@ -3508,7 +3529,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_sb_block = sb_block;
if (sb->s_bdev->bd_part)
sbi->s_sectors_written_start =
- part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+ part_stat_read(sb->s_bdev->bd_part, sectors[STAT_WRITE]);
/* Cleanup superblock name */
strreplace(sb->s_id, '/', '!');
@@ -4813,11 +4834,12 @@ static int ext4_commit_super(struct super_block *sb, int sync)
* to complain and force a full file system check.
*/
if (!(sb->s_flags & SB_RDONLY))
- es->s_wtime = cpu_to_le32(get_seconds());
+ ext4_update_tstamp(es, s_wtime);
if (sb->s_bdev->bd_part)
es->s_kbytes_written =
cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
- ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ ((part_stat_read(sb->s_bdev->bd_part,
+ sectors[STAT_WRITE]) -
EXT4_SB(sb)->s_sectors_written_start) >> 1));
else
es->s_kbytes_written =
@@ -5080,6 +5102,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
#endif
char *orig_data = kstrdup(data, GFP_KERNEL);
+ if (data && !orig_data)
+ return -ENOMEM;
+
/* Store the original options */
old_sb_flags = sb->s_flags;
old_opts.s_mount_opt = sbi->s_mount_opt;
@@ -5665,13 +5690,13 @@ static int ext4_enable_quotas(struct super_block *sb)
DQUOT_USAGE_ENABLED |
(quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
if (err) {
- for (type--; type >= 0; type--)
- dquot_quota_off(sb, type);
-
ext4_warning(sb,
"Failed to enable quota tracking "
"(type=%d, err=%d). Please run "
"e2fsck to fix.", type, err);
+ for (type--; type >= 0; type--)
+ dquot_quota_off(sb, type);
+
return err;
}
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 07:43:34 +0300