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-rw-r--r--fs/exfat/inode.c71
1 files changed, 25 insertions, 46 deletions
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index 1c7aa1ea4724..5590a1e83126 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -17,7 +17,7 @@
#include "exfat_raw.h"
#include "exfat_fs.h"
-static int __exfat_write_inode(struct inode *inode, int sync)
+int __exfat_write_inode(struct inode *inode, int sync)
{
unsigned long long on_disk_size;
struct exfat_dentry *ep, *ep2;
@@ -31,7 +31,7 @@ static int __exfat_write_inode(struct inode *inode, int sync)
return 0;
/*
- * If the indode is already unlinked, there is no need for updating it.
+ * If the inode is already unlinked, there is no need for updating it.
*/
if (ei->dir.dir == DIR_DELETED)
return 0;
@@ -75,6 +75,13 @@ static int __exfat_write_inode(struct inode *inode, int sync)
ep2->dentry.stream.valid_size = cpu_to_le64(on_disk_size);
ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
+ if (on_disk_size) {
+ ep2->dentry.stream.flags = ei->flags;
+ ep2->dentry.stream.start_clu = cpu_to_le32(ei->start_clu);
+ } else {
+ ep2->dentry.stream.flags = ALLOC_FAT_CHAIN;
+ ep2->dentry.stream.start_clu = EXFAT_FREE_CLUSTER;
+ }
exfat_update_dir_chksum_with_entry_set(es);
return exfat_free_dentry_set(es, sync);
@@ -105,7 +112,7 @@ void exfat_sync_inode(struct inode *inode)
static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
unsigned int *clu, int create)
{
- int ret, modified = false;
+ int ret;
unsigned int last_clu;
struct exfat_chain new_clu;
struct super_block *sb = inode->i_sb;
@@ -114,10 +121,9 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
unsigned int local_clu_offset = clu_offset;
unsigned int num_to_be_allocated = 0, num_clusters = 0;
- if (EXFAT_I(inode)->i_size_ondisk > 0)
+ if (ei->i_size_ondisk > 0)
num_clusters =
- EXFAT_B_TO_CLU_ROUND_UP(EXFAT_I(inode)->i_size_ondisk,
- sbi);
+ EXFAT_B_TO_CLU_ROUND_UP(ei->i_size_ondisk, sbi);
if (clu_offset >= num_clusters)
num_to_be_allocated = clu_offset - num_clusters + 1;
@@ -197,7 +203,6 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
if (new_clu.flags == ALLOC_FAT_CHAIN)
ei->flags = ALLOC_FAT_CHAIN;
ei->start_clu = new_clu.dir;
- modified = true;
} else {
if (new_clu.flags != ei->flags) {
/* no-fat-chain bit is disabled,
@@ -207,7 +212,6 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
exfat_chain_cont_cluster(sb, ei->start_clu,
num_clusters);
ei->flags = ALLOC_FAT_CHAIN;
- modified = true;
}
if (new_clu.flags == ALLOC_FAT_CHAIN)
if (exfat_ent_set(sb, last_clu, new_clu.dir))
@@ -217,33 +221,6 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
num_clusters += num_to_be_allocated;
*clu = new_clu.dir;
- if (ei->dir.dir != DIR_DELETED && modified) {
- struct exfat_dentry *ep;
- struct exfat_entry_set_cache *es;
- int err;
-
- es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry,
- ES_ALL_ENTRIES);
- if (!es)
- return -EIO;
- /* get stream entry */
- ep = exfat_get_dentry_cached(es, 1);
-
- /* update directory entry */
- ep->dentry.stream.flags = ei->flags;
- ep->dentry.stream.start_clu =
- cpu_to_le32(ei->start_clu);
- ep->dentry.stream.valid_size =
- cpu_to_le64(i_size_read(inode));
- ep->dentry.stream.size =
- ep->dentry.stream.valid_size;
-
- exfat_update_dir_chksum_with_entry_set(es);
- err = exfat_free_dentry_set(es, inode_needs_sync(inode));
- if (err)
- return err;
- } /* end of if != DIR_DELETED */
-
inode->i_blocks +=
num_to_be_allocated << sbi->sect_per_clus_bits;
@@ -358,9 +335,9 @@ 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)
@@ -385,18 +362,19 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
if (to > i_size_read(inode)) {
truncate_pagecache(inode, i_size_read(inode));
+ inode->i_mtime = inode->i_ctime = current_time(inode);
exfat_truncate(inode, EXFAT_I(inode)->i_size_aligned);
}
}
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);
@@ -416,10 +394,10 @@ static int exfat_write_end(struct file *file, struct address_space *mapping,
err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
- if (EXFAT_I(inode)->i_size_aligned < i_size_read(inode)) {
+ if (ei->i_size_aligned < i_size_read(inode)) {
exfat_fs_error(inode->i_sb,
"invalid size(size(%llu) > aligned(%llu)\n",
- i_size_read(inode), EXFAT_I(inode)->i_size_aligned);
+ i_size_read(inode), ei->i_size_aligned);
return -EIO;
}
@@ -491,8 +469,9 @@ int exfat_block_truncate_page(struct inode *inode, loff_t from)
}
static const struct address_space_operations exfat_aops = {
- .set_page_dirty = __set_page_dirty_buffers,
- .readpage = exfat_readpage,
+ .dirty_folio = block_dirty_folio,
+ .invalidate_folio = block_invalidate_folio,
+ .read_folio = exfat_read_folio,
.readahead = exfat_readahead,
.writepage = exfat_writepage,
.writepages = exfat_writepages,
@@ -573,7 +552,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
inode->i_uid = sbi->options.fs_uid;
inode->i_gid = sbi->options.fs_gid;
inode_inc_iversion(inode);
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
if (info->attr & ATTR_SUBDIR) { /* directory */
inode->i_generation &= ~1;
@@ -603,8 +582,8 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
exfat_save_attr(inode, info->attr);
- inode->i_blocks = ((i_size_read(inode) + (sbi->cluster_size - 1)) &
- ~((loff_t)sbi->cluster_size - 1)) >> inode->i_blkbits;
+ inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >>
+ inode->i_blkbits;
inode->i_mtime = info->mtime;
inode->i_ctime = info->mtime;
ei->i_crtime = info->crtime;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.