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Diffstat (limited to 'fs/hpfs/super.c')
-rw-r--r--fs/hpfs/super.c114
1 files changed, 70 insertions, 44 deletions
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 4334cda8dba..7cd00d3a7c9 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -62,22 +62,26 @@ void hpfs_error(struct super_block *s, const char *fmt, ...)
vsnprintf(err_buf, sizeof(err_buf), fmt, args);
va_end(args);
- printk("HPFS: filesystem error: %s", err_buf);
+ pr_err("filesystem error: %s", err_buf);
if (!hpfs_sb(s)->sb_was_error) {
if (hpfs_sb(s)->sb_err == 2) {
- printk("; crashing the system because you wanted it\n");
+ pr_cont("; crashing the system because you wanted it\n");
mark_dirty(s, 0);
panic("HPFS panic");
} else if (hpfs_sb(s)->sb_err == 1) {
- if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
+ if (s->s_flags & MS_RDONLY)
+ pr_cont("; already mounted read-only\n");
else {
- printk("; remounting read-only\n");
+ pr_cont("; remounting read-only\n");
mark_dirty(s, 0);
s->s_flags |= MS_RDONLY;
}
- } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
- else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
- } else printk("\n");
+ } else if (s->s_flags & MS_RDONLY)
+ pr_cont("; going on - but anything won't be destroyed because it's read-only\n");
+ else
+ pr_cont("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
+ } else
+ pr_cont("\n");
hpfs_sb(s)->sb_was_error = 1;
}
@@ -101,21 +105,27 @@ int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
return 0;
}
-static void hpfs_put_super(struct super_block *s)
+static void free_sbi(struct hpfs_sb_info *sbi)
{
- struct hpfs_sb_info *sbi = hpfs_sb(s);
+ kfree(sbi->sb_cp_table);
+ kfree(sbi->sb_bmp_dir);
+ kfree(sbi);
+}
+static void lazy_free_sbi(struct rcu_head *rcu)
+{
+ free_sbi(container_of(rcu, struct hpfs_sb_info, rcu));
+}
+
+static void hpfs_put_super(struct super_block *s)
+{
hpfs_lock(s);
unmark_dirty(s);
hpfs_unlock(s);
-
- kfree(sbi->sb_cp_table);
- kfree(sbi->sb_bmp_dir);
- s->s_fs_info = NULL;
- kfree(sbi);
+ call_rcu(&hpfs_sb(s)->rcu, lazy_free_sbi);
}
-unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
+static unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
{
struct quad_buffer_head qbh;
unsigned long *bits;
@@ -123,7 +133,7 @@ unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
bits = hpfs_map_4sectors(s, secno, &qbh, 0);
if (!bits)
- return 0;
+ return (unsigned)-1;
count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);
hpfs_brelse4(&qbh);
return count;
@@ -138,30 +148,45 @@ static unsigned count_bitmaps(struct super_block *s)
hpfs_prefetch_bitmap(s, n);
}
for (n = 0; n < n_bands; n++) {
+ unsigned c;
hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);
- count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
+ c = hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
+ if (c != (unsigned)-1)
+ count += c;
}
return count;
}
+unsigned hpfs_get_free_dnodes(struct super_block *s)
+{
+ struct hpfs_sb_info *sbi = hpfs_sb(s);
+ if (sbi->sb_n_free_dnodes == (unsigned)-1) {
+ unsigned c = hpfs_count_one_bitmap(s, sbi->sb_dmap);
+ if (c == (unsigned)-1)
+ return 0;
+ sbi->sb_n_free_dnodes = c;
+ }
+ return sbi->sb_n_free_dnodes;
+}
+
static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *s = dentry->d_sb;
struct hpfs_sb_info *sbi = hpfs_sb(s);
u64 id = huge_encode_dev(s->s_bdev->bd_dev);
+
hpfs_lock(s);
- /*if (sbi->sb_n_free == -1) {*/
+ if (sbi->sb_n_free == (unsigned)-1)
sbi->sb_n_free = count_bitmaps(s);
- sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
- /*}*/
+
buf->f_type = s->s_magic;
buf->f_bsize = 512;
buf->f_blocks = sbi->sb_fs_size;
buf->f_bfree = sbi->sb_n_free;
buf->f_bavail = sbi->sb_n_free;
buf->f_files = sbi->sb_dirband_size / 4;
- buf->f_ffree = sbi->sb_n_free_dnodes;
+ buf->f_ffree = hpfs_get_free_dnodes(s);
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 254;
@@ -271,7 +296,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask,
if (!opts)
return 1;
- /*printk("Parsing opts: '%s'\n",opts);*/
+ /*pr_info("Parsing opts: '%s'\n",opts);*/
while ((p = strsep(&opts, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
@@ -366,7 +391,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask,
static inline void hpfs_help(void)
{
- printk("\n\
+ pr_info("\n\
HPFS filesystem options:\n\
help do not mount and display this text\n\
uid=xxx set uid of files that don't have uid specified in eas\n\
@@ -400,6 +425,8 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
struct hpfs_sb_info *sbi = hpfs_sb(s);
char *new_opts = kstrdup(data, GFP_KERNEL);
+ sync_filesystem(s);
+
*flags |= MS_NOATIME;
hpfs_lock(s);
@@ -411,7 +438,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,
&eas, &chk, &errs, &chkdsk, &timeshift))) {
- printk("HPFS: bad mount options.\n");
+ pr_err("bad mount options.\n");
goto out_err;
}
if (o == 2) {
@@ -419,7 +446,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
goto out_err;
}
if (timeshift != sbi->sb_timeshift) {
- printk("HPFS: timeshift can't be changed using remount.\n");
+ pr_err("timeshift can't be changed using remount.\n");
goto out_err;
}
@@ -485,9 +512,6 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
}
s->s_fs_info = sbi;
- sbi->sb_bmp_dir = NULL;
- sbi->sb_cp_table = NULL;
-
mutex_init(&sbi->hpfs_mutex);
hpfs_lock(s);
@@ -503,7 +527,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase,
&eas, &chk, &errs, &chkdsk, &timeshift))) {
- printk("HPFS: bad mount options.\n");
+ pr_err("bad mount options.\n");
goto bail0;
}
if (o==2) {
@@ -522,16 +546,17 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC
||*/ le32_to_cpu(superblock->magic) != SB_MAGIC
|| le32_to_cpu(spareblock->magic) != SP_MAGIC) {
- if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
+ if (!silent)
+ pr_err("Bad magic ... probably not HPFS\n");
goto bail4;
}
/* Check version */
if (!(s->s_flags & MS_RDONLY) &&
superblock->funcversion != 2 && superblock->funcversion != 3) {
- printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
+ pr_err("Bad version %d,%d. Mount readonly to go around\n",
(int)superblock->version, (int)superblock->funcversion);
- printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n");
+ pr_err("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n");
goto bail4;
}
@@ -577,7 +602,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
/* Check for general fs errors*/
if (spareblock->dirty && !spareblock->old_wrote) {
if (errs == 2) {
- printk("HPFS: Improperly stopped, not mounted\n");
+ pr_err("Improperly stopped, not mounted\n");
goto bail4;
}
hpfs_error(s, "improperly stopped");
@@ -591,22 +616,25 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
if (spareblock->hotfixes_used || spareblock->n_spares_used) {
if (errs >= 2) {
- printk("HPFS: Hotfixes not supported here, try chkdsk\n");
+ pr_err("Hotfixes not supported here, try chkdsk\n");
mark_dirty(s, 0);
goto bail4;
}
hpfs_error(s, "hotfixes not supported here, try chkdsk");
- if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
- else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
+ if (errs == 0)
+ pr_err("Proceeding, but your filesystem will be probably corrupted by this driver...\n");
+ else
+ pr_err("This driver may read bad files or crash when operating on disk with hotfixes.\n");
}
if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {
if (errs >= 2) {
- printk("HPFS: Spare dnodes used, try chkdsk\n");
+ pr_err("Spare dnodes used, try chkdsk\n");
mark_dirty(s, 0);
goto bail4;
}
hpfs_error(s, "warning: spare dnodes used, try chkdsk");
- if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
+ if (errs == 0)
+ pr_err("Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
}
if (chk) {
unsigned a;
@@ -625,12 +653,13 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
goto bail4;
}
sbi->sb_dirband_size = a;
- } else printk("HPFS: You really don't want any checks? You are crazy...\n");
+ } else
+ pr_err("You really don't want any checks? You are crazy...\n");
/* Load code page table */
if (le32_to_cpu(spareblock->n_code_pages))
if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))
- printk("HPFS: Warning: code page support is disabled\n");
+ pr_err("code page support is disabled\n");
brelse(bh2);
brelse(bh1);
@@ -679,10 +708,7 @@ bail2: brelse(bh0);
bail1:
bail0:
hpfs_unlock(s);
- kfree(sbi->sb_bmp_dir);
- kfree(sbi->sb_cp_table);
- s->s_fs_info = NULL;
- kfree(sbi);
+ free_sbi(sbi);
return -EINVAL;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 11:14:16 +0000