summaryrefslogtreecommitdiffstats
path: root/fs/btrfs/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c145
1 files changed, 116 insertions, 29 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8eb6191d86d..3aab10ce63e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -56,6 +56,8 @@
#include "rcu-string.h"
#include "dev-replace.h"
#include "free-space-cache.h"
+#include "backref.h"
+#include "tests/btrfs-tests.h"
#define CREATE_TRACE_POINTS
#include <trace/events/btrfs.h>
@@ -320,14 +322,15 @@ enum {
Opt_enospc_debug, Opt_subvolrootid, Opt_defrag, Opt_inode_cache,
Opt_no_space_cache, Opt_recovery, Opt_skip_balance,
Opt_check_integrity, Opt_check_integrity_including_extent_data,
- Opt_check_integrity_print_mask, Opt_fatal_errors,
+ Opt_check_integrity_print_mask, Opt_fatal_errors, Opt_rescan_uuid_tree,
+ Opt_commit_interval,
Opt_err,
};
static match_table_t tokens = {
{Opt_degraded, "degraded"},
{Opt_subvol, "subvol=%s"},
- {Opt_subvolid, "subvolid=%d"},
+ {Opt_subvolid, "subvolid=%s"},
{Opt_device, "device=%s"},
{Opt_nodatasum, "nodatasum"},
{Opt_nodatacow, "nodatacow"},
@@ -360,7 +363,9 @@ static match_table_t tokens = {
{Opt_check_integrity, "check_int"},
{Opt_check_integrity_including_extent_data, "check_int_data"},
{Opt_check_integrity_print_mask, "check_int_print_mask=%d"},
+ {Opt_rescan_uuid_tree, "rescan_uuid_tree"},
{Opt_fatal_errors, "fatal_errors=%s"},
+ {Opt_commit_interval, "commit=%d"},
{Opt_err, NULL},
};
@@ -496,10 +501,15 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, NOBARRIER);
break;
case Opt_thread_pool:
- intarg = 0;
- match_int(&args[0], &intarg);
- if (intarg)
+ ret = match_int(&args[0], &intarg);
+ if (ret) {
+ goto out;
+ } else if (intarg > 0) {
info->thread_pool_size = intarg;
+ } else {
+ ret = -EINVAL;
+ goto out;
+ }
break;
case Opt_max_inline:
num = match_strdup(&args[0]);
@@ -513,7 +523,10 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
root->sectorsize);
}
printk(KERN_INFO "btrfs: max_inline at %llu\n",
- (unsigned long long)info->max_inline);
+ info->max_inline);
+ } else {
+ ret = -ENOMEM;
+ goto out;
}
break;
case Opt_alloc_start:
@@ -525,7 +538,10 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
kfree(num);
printk(KERN_INFO
"btrfs: allocations start at %llu\n",
- (unsigned long long)info->alloc_start);
+ info->alloc_start);
+ } else {
+ ret = -ENOMEM;
+ goto out;
}
break;
case Opt_noacl:
@@ -540,12 +556,16 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, FLUSHONCOMMIT);
break;
case Opt_ratio:
- intarg = 0;
- match_int(&args[0], &intarg);
- if (intarg) {
+ ret = match_int(&args[0], &intarg);
+ if (ret) {
+ goto out;
+ } else if (intarg >= 0) {
info->metadata_ratio = intarg;
printk(KERN_INFO "btrfs: metadata ratio %d\n",
info->metadata_ratio);
+ } else {
+ ret = -EINVAL;
+ goto out;
}
break;
case Opt_discard:
@@ -554,6 +574,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
case Opt_space_cache:
btrfs_set_opt(info->mount_opt, SPACE_CACHE);
break;
+ case Opt_rescan_uuid_tree:
+ btrfs_set_opt(info->mount_opt, RESCAN_UUID_TREE);
+ break;
case Opt_no_space_cache:
printk(KERN_INFO "btrfs: disabling disk space caching\n");
btrfs_clear_opt(info->mount_opt, SPACE_CACHE);
@@ -596,13 +619,17 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY);
break;
case Opt_check_integrity_print_mask:
- intarg = 0;
- match_int(&args[0], &intarg);
- if (intarg) {
+ ret = match_int(&args[0], &intarg);
+ if (ret) {
+ goto out;
+ } else if (intarg >= 0) {
info->check_integrity_print_mask = intarg;
printk(KERN_INFO "btrfs:"
" check_integrity_print_mask 0x%x\n",
info->check_integrity_print_mask);
+ } else {
+ ret = -EINVAL;
+ goto out;
}
break;
#else
@@ -626,6 +653,29 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
goto out;
}
break;
+ case Opt_commit_interval:
+ intarg = 0;
+ ret = match_int(&args[0], &intarg);
+ if (ret < 0) {
+ printk(KERN_ERR
+ "btrfs: invalid commit interval\n");
+ ret = -EINVAL;
+ goto out;
+ }
+ if (intarg > 0) {
+ if (intarg > 300) {
+ printk(KERN_WARNING
+ "btrfs: excessive commit interval %d\n",
+ intarg);
+ }
+ info->commit_interval = intarg;
+ } else {
+ printk(KERN_INFO
+ "btrfs: using default commit interval %ds\n",
+ BTRFS_DEFAULT_COMMIT_INTERVAL);
+ info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL;
+ }
+ break;
case Opt_err:
printk(KERN_INFO "btrfs: unrecognized mount option "
"'%s'\n", p);
@@ -654,8 +704,8 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
{
substring_t args[MAX_OPT_ARGS];
char *device_name, *opts, *orig, *p;
+ char *num = NULL;
int error = 0;
- int intarg;
if (!options)
return 0;
@@ -679,17 +729,23 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
case Opt_subvol:
kfree(*subvol_name);
*subvol_name = match_strdup(&args[0]);
+ if (!*subvol_name) {
+ error = -ENOMEM;
+ goto out;
+ }
break;
case Opt_subvolid:
- intarg = 0;
- error = match_int(&args[0], &intarg);
- if (!error) {
+ num = match_strdup(&args[0]);
+ if (num) {
+ *subvol_objectid = memparse(num, NULL);
+ kfree(num);
/* we want the original fs_tree */
- if (!intarg)
+ if (!*subvol_objectid)
*subvol_objectid =
BTRFS_FS_TREE_OBJECTID;
- else
- *subvol_objectid = intarg;
+ } else {
+ error = -EINVAL;
+ goto out;
}
break;
case Opt_subvolrootid:
@@ -892,11 +948,9 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
if (btrfs_test_opt(root, NOBARRIER))
seq_puts(seq, ",nobarrier");
if (info->max_inline != 8192 * 1024)
- seq_printf(seq, ",max_inline=%llu",
- (unsigned long long)info->max_inline);
+ seq_printf(seq, ",max_inline=%llu", info->max_inline);
if (info->alloc_start != 0)
- seq_printf(seq, ",alloc_start=%llu",
- (unsigned long long)info->alloc_start);
+ seq_printf(seq, ",alloc_start=%llu", info->alloc_start);
if (info->thread_pool_size != min_t(unsigned long,
num_online_cpus() + 2, 8))
seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
@@ -928,6 +982,8 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
seq_puts(seq, ",space_cache");
else
seq_puts(seq, ",nospace_cache");
+ if (btrfs_test_opt(root, RESCAN_UUID_TREE))
+ seq_puts(seq, ",rescan_uuid_tree");
if (btrfs_test_opt(root, CLEAR_CACHE))
seq_puts(seq, ",clear_cache");
if (btrfs_test_opt(root, USER_SUBVOL_RM_ALLOWED))
@@ -940,8 +996,24 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
seq_puts(seq, ",inode_cache");
if (btrfs_test_opt(root, SKIP_BALANCE))
seq_puts(seq, ",skip_balance");
+ if (btrfs_test_opt(root, RECOVERY))
+ seq_puts(seq, ",recovery");
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+ if (btrfs_test_opt(root, CHECK_INTEGRITY_INCLUDING_EXTENT_DATA))
+ seq_puts(seq, ",check_int_data");
+ else if (btrfs_test_opt(root, CHECK_INTEGRITY))
+ seq_puts(seq, ",check_int");
+ if (info->check_integrity_print_mask)
+ seq_printf(seq, ",check_int_print_mask=%d",
+ info->check_integrity_print_mask);
+#endif
+ if (info->metadata_ratio)
+ seq_printf(seq, ",metadata_ratio=%d",
+ info->metadata_ratio);
if (btrfs_test_opt(root, PANIC_ON_FATAL_ERROR))
seq_puts(seq, ",fatal_errors=panic");
+ if (info->commit_interval != BTRFS_DEFAULT_COMMIT_INTERVAL)
+ seq_printf(seq, ",commit=%d", info->commit_interval);
return 0;
}
@@ -1696,6 +1768,11 @@ static void btrfs_print_info(void)
"\n");
}
+static int btrfs_run_sanity_tests(void)
+{
+ return btrfs_test_free_space_cache();
+}
+
static int __init init_btrfs_fs(void)
{
int err;
@@ -1734,23 +1811,32 @@ static int __init init_btrfs_fs(void)
if (err)
goto free_auto_defrag;
- err = btrfs_interface_init();
+ err = btrfs_prelim_ref_init();
if (err)
- goto free_delayed_ref;
+ goto free_prelim_ref;
- err = register_filesystem(&btrfs_fs_type);
+ err = btrfs_interface_init();
if (err)
- goto unregister_ioctl;
+ goto free_delayed_ref;
btrfs_init_lockdep();
btrfs_print_info();
- btrfs_test_free_space_cache();
+
+ err = btrfs_run_sanity_tests();
+ if (err)
+ goto unregister_ioctl;
+
+ err = register_filesystem(&btrfs_fs_type);
+ if (err)
+ goto unregister_ioctl;
return 0;
unregister_ioctl:
btrfs_interface_exit();
+free_prelim_ref:
+ btrfs_prelim_ref_exit();
free_delayed_ref:
btrfs_delayed_ref_exit();
free_auto_defrag:
@@ -1777,6 +1863,7 @@ static void __exit exit_btrfs_fs(void)
btrfs_delayed_ref_exit();
btrfs_auto_defrag_exit();
btrfs_delayed_inode_exit();
+ btrfs_prelim_ref_exit();
ordered_data_exit();
extent_map_exit();
extent_io_exit();
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 00:01:31 +0000