From: Tetsuhiro Kohada <kohada.t2@gmail.com>
To: kohada.t2@gmail.com
Cc: kohada.tetsuhiro@dc.mitsubishielectric.co.jp,
mori.takahiro@ab.mitsubishielectric.co.jp,
motai.hirotaka@aj.mitsubishielectric.co.jp,
Namjae Jeon <linkinjeon@kernel.org>,
Sungjong Seo <sj1557.seo@samsung.com>,
Namjae Jeon <namjae.jeon@samsung.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] exfat: add error check when updating dir-entries
Date: Tue, 9 Jun 2020 16:53:28 +0900 [thread overview]
Message-ID: <20200609075329.13313-2-kohada.t2@gmail.com> (raw)
In-Reply-To: <20200609075329.13313-1-kohada.t2@gmail.com>
Add error check when synchronously updating dir-entries.
Suggested-by: Namjae Jeon <linkinjeon@kernel.org>
Suggested-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Tetsuhiro Kohada <kohada.t2@gmail.com>
---
Changes in v2:
- Split into 'write multiple sectors at once'
and 'add error check when updating dir-entries'
fs/exfat/dir.c | 3 ++-
fs/exfat/exfat_fs.h | 2 +-
fs/exfat/file.c | 5 ++++-
fs/exfat/inode.c | 8 +++++---
4 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c
index 495884ccb352..3eb8386fb5f2 100644
--- a/fs/exfat/dir.c
+++ b/fs/exfat/dir.c
@@ -602,7 +602,7 @@ void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es)
es->modified = true;
}
-void exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync)
+int exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync)
{
int i, err = 0;
@@ -614,6 +614,7 @@ void exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync)
for (i = 0; i < es->num_bh; i++)
err ? bforget(es->bh[i]):brelse(es->bh[i]);
kfree(es);
+ return err;
}
static int exfat_walk_fat_chain(struct super_block *sb,
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 935954da2e54..f4fa0e833486 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -462,7 +462,7 @@ struct exfat_dentry *exfat_get_dentry_cached(struct exfat_entry_set_cache *es,
int num);
struct exfat_entry_set_cache *exfat_get_dentry_set(struct super_block *sb,
struct exfat_chain *p_dir, int entry, unsigned int type);
-void exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync);
+int exfat_free_dentry_set(struct exfat_entry_set_cache *es, int sync);
int exfat_count_dir_entries(struct super_block *sb, struct exfat_chain *p_dir);
/* inode.c */
diff --git a/fs/exfat/file.c b/fs/exfat/file.c
index fce03f318787..37c8f04c1f8a 100644
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -153,6 +153,7 @@ int __exfat_truncate(struct inode *inode, loff_t new_size)
struct timespec64 ts;
struct exfat_dentry *ep, *ep2;
struct exfat_entry_set_cache *es;
+ int err;
es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry,
ES_ALL_ENTRIES);
@@ -187,7 +188,9 @@ int __exfat_truncate(struct inode *inode, loff_t new_size)
}
exfat_update_dir_chksum_with_entry_set(es);
- exfat_free_dentry_set(es, inode_needs_sync(inode));
+ err = exfat_free_dentry_set(es, inode_needs_sync(inode));
+ if (err)
+ return err;
}
/* cut off from the FAT chain */
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index ef7cf7a6d187..c0bfd1a586aa 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -77,8 +77,7 @@ static int __exfat_write_inode(struct inode *inode, int sync)
ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
exfat_update_dir_chksum_with_entry_set(es);
- exfat_free_dentry_set(es, sync);
- return 0;
+ return exfat_free_dentry_set(es, sync);
}
int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -222,6 +221,7 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
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);
@@ -240,7 +240,9 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
ep->dentry.stream.valid_size;
exfat_update_dir_chksum_with_entry_set(es);
- exfat_free_dentry_set(es, inode_needs_sync(inode));
+ err = exfat_free_dentry_set(es, inode_needs_sync(inode));
+ if (err)
+ return err;
} /* end of if != DIR_DELETED */
--
2.25.1
next prev parent reply other threads:[~2020-06-09 7:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200609075406epcas1p38bc47a52172f47af12d79275a751b4d9@epcas1p3.samsung.com>
2020-06-09 7:53 ` [PATCH 1/2 v2] exfat: write multiple sectors at once Tetsuhiro Kohada
2020-06-09 7:53 ` Tetsuhiro Kohada [this message]
2020-06-09 8:49 ` Namjae Jeon
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