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-rw-r--r--fs/exfat/balloc.c8
-rw-r--r--fs/exfat/exfat_fs.h7
-rw-r--r--fs/exfat/fatent.c47
-rw-r--r--fs/exfat/file.c5
-rw-r--r--fs/exfat/inode.c10
-rw-r--r--fs/exfat/misc.c10
-rw-r--r--fs/exfat/namei.c31
-rw-r--r--fs/exfat/super.c19
8 files changed, 60 insertions, 77 deletions
diff --git a/fs/exfat/balloc.c b/fs/exfat/balloc.c
index 03f142307174..9f42f25fab92 100644
--- a/fs/exfat/balloc.c
+++ b/fs/exfat/balloc.c
@@ -148,7 +148,9 @@ int exfat_set_bitmap(struct inode *inode, unsigned int clu, bool sync)
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
- WARN_ON(clu < EXFAT_FIRST_CLUSTER);
+ if (!is_valid_cluster(sbi, clu))
+ return -EINVAL;
+
ent_idx = CLUSTER_TO_BITMAP_ENT(clu);
i = BITMAP_OFFSET_SECTOR_INDEX(sb, ent_idx);
b = BITMAP_OFFSET_BIT_IN_SECTOR(sb, ent_idx);
@@ -166,7 +168,9 @@ void exfat_clear_bitmap(struct inode *inode, unsigned int clu, bool sync)
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_mount_options *opts = &sbi->options;
- WARN_ON(clu < EXFAT_FIRST_CLUSTER);
+ if (!is_valid_cluster(sbi, clu))
+ return;
+
ent_idx = CLUSTER_TO_BITMAP_ENT(clu);
i = BITMAP_OFFSET_SECTOR_INDEX(sb, ent_idx);
b = BITMAP_OFFSET_BIT_IN_SECTOR(sb, ent_idx);
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index c6800b880920..4a7a2308eb72 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -203,6 +203,7 @@ struct exfat_mount_options {
/* on error: continue, panic, remount-ro */
enum exfat_error_mode errors;
unsigned utf8:1, /* Use of UTF-8 character set */
+ sys_tz:1, /* Use local timezone */
discard:1, /* Issue discard requests on deletions */
keep_last_dots:1; /* Keep trailing periods in paths */
int time_offset; /* Offset of timestamps from UTC (in minutes) */
@@ -381,6 +382,12 @@ static inline int exfat_sector_to_cluster(struct exfat_sb_info *sbi,
EXFAT_RESERVED_CLUSTERS;
}
+static inline bool is_valid_cluster(struct exfat_sb_info *sbi,
+ unsigned int clus)
+{
+ return clus >= EXFAT_FIRST_CLUSTER && clus < sbi->num_clusters;
+}
+
/* super.c */
int exfat_set_volume_dirty(struct super_block *sb);
int exfat_clear_volume_dirty(struct super_block *sb);
diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c
index a3464e56a7e1..9de6a6b844c9 100644
--- a/fs/exfat/fatent.c
+++ b/fs/exfat/fatent.c
@@ -6,6 +6,7 @@
#include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/buffer_head.h>
+#include <linux/blkdev.h>
#include "exfat_raw.h"
#include "exfat_fs.h"
@@ -81,12 +82,6 @@ int exfat_ent_set(struct super_block *sb, unsigned int loc,
return 0;
}
-static inline bool is_valid_cluster(struct exfat_sb_info *sbi,
- unsigned int clus)
-{
- return clus >= EXFAT_FIRST_CLUSTER && clus < sbi->num_clusters;
-}
-
int exfat_ent_get(struct super_block *sb, unsigned int loc,
unsigned int *content)
{
@@ -274,10 +269,9 @@ int exfat_zeroed_cluster(struct inode *dir, unsigned int clu)
{
struct super_block *sb = dir->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
- struct buffer_head *bhs[MAX_BUF_PER_PAGE];
- int nr_bhs = MAX_BUF_PER_PAGE;
+ struct buffer_head *bh;
sector_t blknr, last_blknr;
- int err, i, n;
+ int i;
blknr = exfat_cluster_to_sector(sbi, clu);
last_blknr = blknr + sbi->sect_per_clus;
@@ -291,30 +285,23 @@ int exfat_zeroed_cluster(struct inode *dir, unsigned int clu)
}
/* Zeroing the unused blocks on this cluster */
- while (blknr < last_blknr) {
- for (n = 0; n < nr_bhs && blknr < last_blknr; n++, blknr++) {
- bhs[n] = sb_getblk(sb, blknr);
- if (!bhs[n]) {
- err = -ENOMEM;
- goto release_bhs;
- }
- memset(bhs[n]->b_data, 0, sb->s_blocksize);
- }
-
- err = exfat_update_bhs(bhs, n, IS_DIRSYNC(dir));
- if (err)
- goto release_bhs;
+ for (i = blknr; i < last_blknr; i++) {
+ bh = sb_getblk(sb, i);
+ if (!bh)
+ return -ENOMEM;
- for (i = 0; i < n; i++)
- brelse(bhs[i]);
+ memset(bh->b_data, 0, sb->s_blocksize);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ brelse(bh);
}
- return 0;
-release_bhs:
- exfat_err(sb, "failed zeroed sect %llu\n", (unsigned long long)blknr);
- for (i = 0; i < n; i++)
- bforget(bhs[i]);
- return err;
+ if (IS_DIRSYNC(dir))
+ return sync_blockdev_range(sb->s_bdev,
+ EXFAT_BLK_TO_B(blknr, sb),
+ EXFAT_BLK_TO_B(last_blknr, sb) - 1);
+
+ return 0;
}
int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc,
diff --git a/fs/exfat/file.c b/fs/exfat/file.c
index 2f5130059236..20d4e47f57ab 100644
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -351,21 +351,20 @@ out:
static int exfat_ioctl_fitrim(struct inode *inode, unsigned long arg)
{
- struct request_queue *q = bdev_get_queue(inode->i_sb->s_bdev);
struct fstrim_range range;
int ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- if (!blk_queue_discard(q))
+ if (!bdev_max_discard_sectors(inode->i_sb->s_bdev))
return -EOPNOTSUPP;
if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range)))
return -EFAULT;
range.minlen = max_t(unsigned int, range.minlen,
- q->limits.discard_granularity);
+ bdev_discard_granularity(inode->i_sb->s_bdev));
ret = exfat_trim_fs(inode, &range);
if (ret < 0)
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index fc0ea1684880..0133d385d8e8 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -357,9 +357,9 @@ unlock_ret:
return err;
}
-static int exfat_readpage(struct file *file, struct page *page)
+static int exfat_read_folio(struct file *file, struct folio *folio)
{
- return mpage_readpage(page, exfat_get_block);
+ return mpage_read_folio(folio, exfat_get_block);
}
static void exfat_readahead(struct readahead_control *rac)
@@ -389,13 +389,13 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
}
static int exfat_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned int len, unsigned int flags,
+ loff_t pos, unsigned int len,
struct page **pagep, void **fsdata)
{
int ret;
*pagep = NULL;
- ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata,
exfat_get_block,
&EXFAT_I(mapping->host)->i_size_ondisk);
@@ -492,7 +492,7 @@ int exfat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations exfat_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
- .readpage = exfat_readpage,
+ .read_folio = exfat_read_folio,
.readahead = exfat_readahead,
.writepage = exfat_writepage,
.writepages = exfat_writepages,
diff --git a/fs/exfat/misc.c b/fs/exfat/misc.c
index d5bd8e6d9741..9380e0188b55 100644
--- a/fs/exfat/misc.c
+++ b/fs/exfat/misc.c
@@ -74,6 +74,13 @@ static void exfat_adjust_tz(struct timespec64 *ts, u8 tz_off)
ts->tv_sec += TIMEZONE_SEC(0x80 - tz_off);
}
+static inline int exfat_tz_offset(struct exfat_sb_info *sbi)
+{
+ if (sbi->options.sys_tz)
+ return -sys_tz.tz_minuteswest;
+ return sbi->options.time_offset;
+}
+
/* Convert a EXFAT time/date pair to a UNIX date (seconds since 1 1 70). */
void exfat_get_entry_time(struct exfat_sb_info *sbi, struct timespec64 *ts,
u8 tz, __le16 time, __le16 date, u8 time_cs)
@@ -96,8 +103,7 @@ void exfat_get_entry_time(struct exfat_sb_info *sbi, struct timespec64 *ts,
/* Adjust timezone to UTC0. */
exfat_adjust_tz(ts, tz & ~EXFAT_TZ_VALID);
else
- /* Convert from local time to UTC using time_offset. */
- ts->tv_sec -= sbi->options.time_offset * SECS_PER_MIN;
+ ts->tv_sec -= exfat_tz_offset(sbi) * SECS_PER_MIN;
}
/* Convert linear UNIX date to a EXFAT time/date pair. */
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index a02a04a993bf..c6eaf7e9ea74 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -1080,6 +1080,7 @@ static int exfat_rename_file(struct inode *inode, struct exfat_chain *p_dir,
exfat_remove_entries(inode, p_dir, oldentry, 0,
num_old_entries);
+ ei->dir = *p_dir;
ei->entry = newentry;
} else {
if (exfat_get_entry_type(epold) == TYPE_FILE) {
@@ -1167,28 +1168,6 @@ static int exfat_move_file(struct inode *inode, struct exfat_chain *p_olddir,
return 0;
}
-static void exfat_update_parent_info(struct exfat_inode_info *ei,
- struct inode *parent_inode)
-{
- struct exfat_sb_info *sbi = EXFAT_SB(parent_inode->i_sb);
- struct exfat_inode_info *parent_ei = EXFAT_I(parent_inode);
- loff_t parent_isize = i_size_read(parent_inode);
-
- /*
- * the problem that struct exfat_inode_info caches wrong parent info.
- *
- * because of flag-mismatch of ei->dir,
- * there is abnormal traversing cluster chain.
- */
- if (unlikely(parent_ei->flags != ei->dir.flags ||
- parent_isize != EXFAT_CLU_TO_B(ei->dir.size, sbi) ||
- parent_ei->start_clu != ei->dir.dir)) {
- exfat_chain_set(&ei->dir, parent_ei->start_clu,
- EXFAT_B_TO_CLU_ROUND_UP(parent_isize, sbi),
- parent_ei->flags);
- }
-}
-
/* rename or move a old file into a new file */
static int __exfat_rename(struct inode *old_parent_inode,
struct exfat_inode_info *ei, struct inode *new_parent_inode,
@@ -1219,9 +1198,9 @@ static int __exfat_rename(struct inode *old_parent_inode,
return -ENOENT;
}
- exfat_update_parent_info(ei, old_parent_inode);
-
- exfat_chain_dup(&olddir, &ei->dir);
+ exfat_chain_set(&olddir, EXFAT_I(old_parent_inode)->start_clu,
+ EXFAT_B_TO_CLU_ROUND_UP(i_size_read(old_parent_inode), sbi),
+ EXFAT_I(old_parent_inode)->flags);
dentry = ei->entry;
ep = exfat_get_dentry(sb, &olddir, dentry, &old_bh);
@@ -1241,8 +1220,6 @@ static int __exfat_rename(struct inode *old_parent_inode,
goto out;
}
- exfat_update_parent_info(new_ei, new_parent_inode);
-
p_dir = &(new_ei->dir);
new_entry = new_ei->entry;
ep = exfat_get_dentry(sb, p_dir, new_entry, &new_bh);
diff --git a/fs/exfat/super.c b/fs/exfat/super.c
index 8ca21e7917d1..6a4dfe9f31ee 100644
--- a/fs/exfat/super.c
+++ b/fs/exfat/super.c
@@ -170,7 +170,9 @@ static int exfat_show_options(struct seq_file *m, struct dentry *root)
seq_puts(m, ",discard");
if (opts->keep_last_dots)
seq_puts(m, ",keep_last_dots");
- if (opts->time_offset)
+ if (opts->sys_tz)
+ seq_puts(m, ",sys_tz");
+ else if (opts->time_offset)
seq_printf(m, ",time_offset=%d", opts->time_offset);
return 0;
}
@@ -214,6 +216,7 @@ enum {
Opt_errors,
Opt_discard,
Opt_keep_last_dots,
+ Opt_sys_tz,
Opt_time_offset,
/* Deprecated options */
@@ -241,6 +244,7 @@ static const struct fs_parameter_spec exfat_parameters[] = {
fsparam_enum("errors", Opt_errors, exfat_param_enums),
fsparam_flag("discard", Opt_discard),
fsparam_flag("keep_last_dots", Opt_keep_last_dots),
+ fsparam_flag("sys_tz", Opt_sys_tz),
fsparam_s32("time_offset", Opt_time_offset),
__fsparam(NULL, "utf8", Opt_utf8, fs_param_deprecated,
NULL),
@@ -298,6 +302,9 @@ static int exfat_parse_param(struct fs_context *fc, struct fs_parameter *param)
case Opt_keep_last_dots:
opts->keep_last_dots = 1;
break;
+ case Opt_sys_tz:
+ opts->sys_tz = 1;
+ break;
case Opt_time_offset:
/*
* Make the limit 24 just in case someone invents something
@@ -627,13 +634,9 @@ static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)
if (opts->allow_utime == (unsigned short)-1)
opts->allow_utime = ~opts->fs_dmask & 0022;
- if (opts->discard) {
- struct request_queue *q = bdev_get_queue(sb->s_bdev);
-
- if (!blk_queue_discard(q)) {
- exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");
- opts->discard = 0;
- }
+ if (opts->discard && !bdev_max_discard_sectors(sb->s_bdev)) {
+ exfat_warn(sb, "mounting with \"discard\" option, but the device does not support discard");
+ opts->discard = 0;
}
sb->s_flags |= SB_NODIRATIME;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.