>From 28237a586fdcf183e534fa8920fb62bf4f5a3512 Mon Sep 17 00:00:00 2001 From: Harshad Shirwadkar Date: Thu, 23 Dec 2021 12:21:37 -0800 Subject: [PATCH] ext4: use ext4_journal_start/stop for fast commit transactions commit 2729cfdcfa1cc49bef5a90d046fa4a187fdfcc69 upstream. This patch drops all calls to ext4_fc_start_update() and ext4_fc_stop_update(). To ensure that there are no ongoing journal updates during fast commit, we also make jbd2_fc_begin_commit() lock journal for updates. This way we don't have to maintain two different transaction start stop APIs for fast commit and full commit. This patch doesn't remove the functions altogether since in future we want to have inode level locking for fast commits. Signed-off-by: Harshad Shirwadkar Link: https://lore.kernel.org/r/20211223202140.2061101-2-harshads@google.com Signed-off-by: Theodore Ts'o Signed-off-by: Jan Kara --- fs/ext4/acl.c | 2 -- fs/ext4/extents.c | 3 --- fs/ext4/file.c | 4 ---- fs/ext4/inode.c | 7 +------ fs/ext4/ioctl.c | 10 +--------- fs/jbd2/journal.c | 2 ++ 6 files changed, 4 insertions(+), 24 deletions(-) diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 0613dfcbfd4a..5a35768d6149 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -246,7 +246,6 @@ ext4_set_acl(struct user_namespace *mnt_userns, struct inode *inode, handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits); if (IS_ERR(handle)) return PTR_ERR(handle); - ext4_fc_start_update(inode); if ((type == ACL_TYPE_ACCESS) && acl) { error = posix_acl_update_mode(mnt_userns, inode, &mode, &acl); @@ -264,7 +263,6 @@ ext4_set_acl(struct user_namespace *mnt_userns, struct inode *inode, } out_stop: ext4_journal_stop(handle); - ext4_fc_stop_update(inode); if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) goto retry; return error; diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index d3fae909fcbf..82bcf718b1e6 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4701,8 +4701,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) FALLOC_FL_INSERT_RANGE)) return -EOPNOTSUPP; - ext4_fc_start_update(inode); - inode_lock(inode); ret = ext4_convert_inline_data(inode); inode_unlock(inode); @@ -4772,7 +4770,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) inode_unlock(inode); trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); exit: - ext4_fc_stop_update(inode); return ret; } diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 45f6d75de660..4704fe627c4e 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -259,7 +259,6 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb, if (iocb->ki_flags & IOCB_NOWAIT) return -EOPNOTSUPP; - ext4_fc_start_update(inode); inode_lock(inode); ret = ext4_write_checks(iocb, from); if (ret <= 0) @@ -271,7 +270,6 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb, out: inode_unlock(inode); - ext4_fc_stop_update(inode); if (likely(ret > 0)) { iocb->ki_pos += ret; ret = generic_write_sync(iocb, ret); @@ -558,9 +556,7 @@ static ssize_t ext4_dio_write_iter(struct kiocb *iocb, struct iov_iter *from) goto out; } - ext4_fc_start_update(inode); ret = ext4_orphan_add(handle, inode); - ext4_fc_stop_update(inode); if (ret) { ext4_journal_stop(handle); goto out; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index a39d5cca4121..0426f88ba907 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5366,7 +5366,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, if (error) return error; } - ext4_fc_start_update(inode); + if ((ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) || (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) { handle_t *handle; @@ -5390,7 +5390,6 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, if (error) { ext4_journal_stop(handle); - ext4_fc_stop_update(inode); return error; } /* Update corresponding info in inode so that everything is in @@ -5402,7 +5401,6 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, error = ext4_mark_inode_dirty(handle, inode); ext4_journal_stop(handle); if (unlikely(error)) { - ext4_fc_stop_update(inode); return error; } } @@ -5417,12 +5415,10 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); if (attr->ia_size > sbi->s_bitmap_maxbytes) { - ext4_fc_stop_update(inode); return -EFBIG; } } if (!S_ISREG(inode->i_mode)) { - ext4_fc_stop_update(inode); return -EINVAL; } @@ -5548,7 +5544,6 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, ext4_std_error(inode->i_sb, error); if (!error) error = rc; - ext4_fc_stop_update(inode); return error; } diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 656c6ba66ca7..47ec00cfb445 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -744,7 +744,6 @@ int ext4_fileattr_set(struct user_namespace *mnt_userns, u32 flags = fa->flags; int err = -EOPNOTSUPP; - ext4_fc_start_update(inode); if (flags & ~EXT4_FL_USER_VISIBLE) goto out; @@ -765,7 +764,6 @@ int ext4_fileattr_set(struct user_namespace *mnt_userns, goto out; err = ext4_ioctl_setproject(inode, fa->fsx_projid); out: - ext4_fc_stop_update(inode); return err; } @@ -1272,13 +1270,7 @@ static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { - long ret; - - ext4_fc_start_update(file_inode(filp)); - ret = __ext4_ioctl(filp, cmd, arg); - ext4_fc_stop_update(file_inode(filp)); - - return ret; + return __ext4_ioctl(filp, cmd, arg); } #ifdef CONFIG_COMPAT diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 097ba728d516..580d2fdfe21f 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -757,6 +757,7 @@ int jbd2_fc_begin_commit(journal_t *journal, tid_t tid) } journal->j_flags |= JBD2_FAST_COMMIT_ONGOING; write_unlock(&journal->j_state_lock); + jbd2_journal_lock_updates(journal); return 0; } @@ -768,6 +769,7 @@ EXPORT_SYMBOL(jbd2_fc_begin_commit); */ static int __jbd2_fc_end_commit(journal_t *journal, tid_t tid, bool fallback) { + jbd2_journal_unlock_updates(journal); if (journal->j_fc_cleanup_callback) journal->j_fc_cleanup_callback(journal, 0, tid); write_lock(&journal->j_state_lock); -- 2.35.3