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Message-Id: <20230616165109.21695-5-jack@suse.cz>
Date: Fri, 16 Jun 2023 18:50:51 +0200
From: Jan Kara <jack@...e.cz>
To: Ted Tso <tytso@....edu>
Cc: <linux-ext4@...r.kernel.org>, Jan Kara <jack@...e.cz>
Subject: [PATCH 05/11] ext4: Drop EXT4_MF_FS_ABORTED flag
EXT4_MF_FS_ABORTED flag has practically the same intent as
EXT4_FLAGS_SHUTDOWN flag. The shutdown flag is checked in many more
places than the aborted flag which is mostly the historical artifact
where we were relying on SB_RDONLY checks instead of the aborted flag
checks. There are only three places - ext4_sync_file(),
__ext4_remount(), and mballoc debug code - which check aborted flag and
not shutdown flag and this is arguably a bug. Avoid these
inconsistencies by removing EXT4_MF_FS_ABORTED flag and using
EXT4_FLAGS_SHUTDOWN everywhere.
Signed-off-by: Jan Kara <jack@...e.cz>
---
fs/ext4/ext4.h | 1 -
fs/ext4/fsync.c | 7 +++----
fs/ext4/inode.c | 8 +++-----
fs/ext4/mballoc.c | 4 ++--
fs/ext4/super.c | 4 ++--
5 files changed, 10 insertions(+), 14 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ae0c3a148c7b..46d359f5615d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1740,7 +1740,6 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
*/
enum {
EXT4_MF_MNTDIR_SAMPLED,
- EXT4_MF_FS_ABORTED, /* Fatal error detected */
EXT4_MF_FC_INELIGIBLE /* Fast commit ineligible */
};
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 958bcaedcff6..b8e15b9f86c8 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -138,7 +138,6 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
int ret = 0, err;
bool needs_barrier = false;
struct inode *inode = file->f_mapping->host;
- struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
if (unlikely(ext4_forced_shutdown(inode->i_sb)))
return -EIO;
@@ -148,9 +147,9 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
trace_ext4_sync_file_enter(file, datasync);
if (sb_rdonly(inode->i_sb)) {
- /* Make sure that we read updated s_mount_flags value */
+ /* Make sure that we read updated s_ext4_flags value */
smp_rmb();
- if (ext4_test_mount_flag(inode->i_sb, EXT4_MF_FS_ABORTED))
+ if (ext4_forced_shutdown(inode->i_sb))
ret = -EROFS;
goto out;
}
@@ -164,7 +163,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
* Metadata is in the journal, we wait for proper transaction to
* commit here.
*/
- if (!sbi->s_journal)
+ if (!EXT4_SB(inode->i_sb)->s_journal)
ret = ext4_fsync_nojournal(inode, datasync, &needs_barrier);
else
ret = ext4_fsync_journal(inode, datasync, &needs_barrier);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index da3aaaea5f1c..fc6abafcc3fc 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2237,8 +2237,7 @@ static int mpage_map_and_submit_extent(handle_t *handle,
if (err < 0) {
struct super_block *sb = inode->i_sb;
- if (ext4_forced_shutdown(sb) ||
- ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED))
+ if (ext4_forced_shutdown(sb))
goto invalidate_dirty_pages;
/*
* Let the uper layers retry transient errors.
@@ -2560,14 +2559,13 @@ static int ext4_do_writepages(struct mpage_da_data *mpd)
* If the filesystem has aborted, it is read-only, so return
* right away instead of dumping stack traces later on that
* will obscure the real source of the problem. We test
- * EXT4_MF_FS_ABORTED instead of sb->s_flag's SB_RDONLY because
+ * fs shutdown state instead of sb->s_flag's SB_RDONLY because
* the latter could be true if the filesystem is mounted
* read-only, and in that case, ext4_writepages should
* *never* be called, so if that ever happens, we would want
* the stack trace.
*/
- if (unlikely(ext4_forced_shutdown(mapping->host->i_sb) ||
- ext4_test_mount_flag(inode->i_sb, EXT4_MF_FS_ABORTED))) {
+ if (unlikely(ext4_forced_shutdown(mapping->host->i_sb))) {
ret = -EROFS;
goto out_writepages;
}
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 20f67a260df5..5bcccf6908ea 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5341,7 +5341,7 @@ static inline void ext4_mb_show_pa(struct super_block *sb)
{
ext4_group_t i, ngroups;
- if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED))
+ if (ext4_forced_shutdown(sb))
return;
ngroups = ext4_get_groups_count(sb);
@@ -5375,7 +5375,7 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac)
{
struct super_block *sb = ac->ac_sb;
- if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED))
+ if (ext4_forced_shutdown(sb))
return;
mb_debug(sb, "Can't allocate:"
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d57b135c8e54..f883f3fce066 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -657,7 +657,7 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error,
WARN_ON_ONCE(1);
if (!continue_fs && !sb_rdonly(sb)) {
- ext4_set_mount_flag(sb, EXT4_MF_FS_ABORTED);
+ set_bit(EXT4_FLAGS_SHUTDOWN, &EXT4_SB(sb)->s_ext4_flags);
if (journal)
jbd2_journal_abort(journal, -EIO);
}
@@ -6465,7 +6465,7 @@ static int __ext4_remount(struct fs_context *fc, struct super_block *sb)
flush_work(&sbi->s_error_work);
if ((bool)(fc->sb_flags & SB_RDONLY) != sb_rdonly(sb)) {
- if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) {
+ if (ext4_forced_shutdown(sb)) {
err = -EROFS;
goto restore_opts;
}
--
2.35.3
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