From 23339e5752d01a4b5e122759b002cf896d26f6c1 Mon Sep 17 00:00:00 2001 From: Daeho Jeong Date: Mon, 1 Aug 2022 10:08:08 -0700 Subject: f2fs: revive F2FS_IOC_ABORT_VOLATILE_WRITE F2FS_IOC_ABORT_VOLATILE_WRITE was used to abort a atomic write before. However it was removed accidentally. So revive it by changing the name, since volatile write had gone. Signed-off-by: Daeho Jeong Fiexes: 7bc155fec5b3("f2fs: kill volatile write support") Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 8098ed890e94..29711e5b6983 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2109,6 +2109,31 @@ unlock_out: return ret; } +static int f2fs_ioc_abort_atomic_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + struct user_namespace *mnt_userns = file_mnt_user_ns(filp); + int ret; + + if (!inode_owner_or_capable(mnt_userns, inode)) + return -EACCES; + + ret = mnt_want_write_file(filp); + if (ret) + return ret; + + inode_lock(inode); + + if (f2fs_is_atomic_file(inode)) + f2fs_abort_atomic_write(inode, true); + + inode_unlock(inode); + + mnt_drop_write_file(filp); + f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); + return ret; +} + static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); @@ -4054,9 +4079,10 @@ static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return f2fs_ioc_start_atomic_write(filp); case F2FS_IOC_COMMIT_ATOMIC_WRITE: return f2fs_ioc_commit_atomic_write(filp); + case F2FS_IOC_ABORT_ATOMIC_WRITE: + return f2fs_ioc_abort_atomic_write(filp); case F2FS_IOC_START_VOLATILE_WRITE: case F2FS_IOC_RELEASE_VOLATILE_WRITE: - case F2FS_IOC_ABORT_VOLATILE_WRITE: return -EOPNOTSUPP; case F2FS_IOC_SHUTDOWN: return f2fs_ioc_shutdown(filp, arg); @@ -4725,7 +4751,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case F2FS_IOC_COMMIT_ATOMIC_WRITE: case F2FS_IOC_START_VOLATILE_WRITE: case F2FS_IOC_RELEASE_VOLATILE_WRITE: - case F2FS_IOC_ABORT_VOLATILE_WRITE: + case F2FS_IOC_ABORT_ATOMIC_WRITE: case F2FS_IOC_SHUTDOWN: case FITRIM: case FS_IOC_SET_ENCRYPTION_POLICY: -- cgit v1.2.3-58-ga151