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for-6.3/dio-2023-02-16

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Merge tag 'for-6.3/dio-2023-02-16' of git://git.kernel.dk/linux

Pull legacy dio update from Jens Axboe:
 "We only have a few file systems that use the old dio code, make them
  select it rather than build it unconditionally"

* tag 'for-6.3/dio-2023-02-16' of git://git.kernel.dk/linux:
  fs: build the legacy direct I/O code conditionally
  fs: move sb_init_dio_done_wq out of direct-io.c
This commit is contained in:
Linus Torvalds 2023-02-20 14:10:36 -08:00
commit 553637f73c
17 changed files with 43 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/Kconfig
View File

@ -18,6 +18,10 @@ config VALIDATE_FS_PARSER
config FS_IOMAP
bool
# old blockdev_direct_IO implementation. Use iomap for new code instead
config LEGACY_DIRECT_IO
bool
if BLOCK
source "fs/ext2/Kconfig"

3
fs/Makefile
View File

@ -19,13 +19,14 @@ obj-y := open.o read_write.o file_table.o super.o \
kernel_read_file.o mnt_idmapping.o remap_range.o
ifeq ($(CONFIG_BLOCK),y)
obj-y += buffer.o direct-io.o mpage.o
obj-y += buffer.o mpage.o
else
obj-y += no-block.o
endif
obj-$(CONFIG_PROC_FS) += proc_namespace.o
obj-$(CONFIG_LEGACY_DIRECT_IO) += direct-io.o
obj-y += notify/
obj-$(CONFIG_EPOLL) += eventpoll.o
obj-y += anon_inodes.o

1
fs/affs/Kconfig
View File

@ -2,6 +2,7 @@
config AFFS_FS
tristate "Amiga FFS file system support"
depends on BLOCK
select LEGACY_DIRECT_IO
help
The Fast File System (FFS) is the common file system used on hard
disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y

24
fs/direct-io.c
View File

@ -558,30 +558,6 @@ static inline int dio_bio_reap(struct dio *dio, struct dio_submit *sdio)
return ret;
}
/*
* Create workqueue for deferred direct IO completions. We allocate the
* workqueue when it's first needed. This avoids creating workqueue for
* filesystems that don't need it and also allows us to create the workqueue
* late enough so the we can include s_id in the name of the workqueue.
*/
int sb_init_dio_done_wq(struct super_block *sb)
{
struct workqueue_struct *old;
struct workqueue_struct *wq = alloc_workqueue("dio/%s",
WQ_MEM_RECLAIM, 0,
sb->s_id);
if (!wq)
return -ENOMEM;
/*
* This has to be atomic as more DIOs can race to create the workqueue
*/
old = cmpxchg(&sb->s_dio_done_wq, NULL, wq);
/* Someone created workqueue before us? Free ours... */
if (old)
destroy_workqueue(wq);
return 0;
}
static int dio_set_defer_completion(struct dio *dio)
{
struct super_block *sb = dio->inode->i_sb;

1
fs/exfat/Kconfig
View File

@ -3,6 +3,7 @@
config EXFAT_FS
tristate "exFAT filesystem support"
select NLS
select LEGACY_DIRECT_IO
help
This allows you to mount devices formatted with the exFAT file system.
exFAT is typically used on SD-Cards or USB sticks.

1
fs/ext2/Kconfig
View File

@ -2,6 +2,7 @@
config EXT2_FS
tristate "Second extended fs support"
select FS_IOMAP
select LEGACY_DIRECT_IO
help
Ext2 is a standard Linux file system for hard disks.

1
fs/fat/Kconfig
View File

@ -2,6 +2,7 @@
config FAT_FS
tristate
select NLS
select LEGACY_DIRECT_IO
help
If you want to use one of the FAT-based file systems (the MS-DOS and
VFAT (Windows 95) file systems), then you must say Y or M here

1
fs/hfs/Kconfig
View File

@ -3,6 +3,7 @@ config HFS_FS
tristate "Apple Macintosh file system support"
depends on BLOCK
select NLS
select LEGACY_DIRECT_IO
help
If you say Y here, you will be able to mount Macintosh-formatted
floppy disks and hard drive partitions with full read-write access.

1
fs/hfsplus/Kconfig
View File

@ -4,6 +4,7 @@ config HFSPLUS_FS
depends on BLOCK
select NLS
select NLS_UTF8
select LEGACY_DIRECT_IO
help
If you say Y here, you will be able to mount extended format
Macintosh-formatted hard drive partitions with full read-write access.

4
fs/internal.h
View File

@ -120,6 +120,7 @@ extern bool trylock_super(struct super_block *sb);
struct super_block *user_get_super(dev_t, bool excl);
void put_super(struct super_block *sb);
extern bool mount_capable(struct fs_context *);
int sb_init_dio_done_wq(struct super_block *sb);
/*
* open.c
@ -187,9 +188,6 @@ extern void mnt_pin_kill(struct mount *m);
*/
extern const struct dentry_operations ns_dentry_operations;
/* direct-io.c: */
int sb_init_dio_done_wq(struct super_block *sb);
/*
* fs/stat.c:
*/

1
fs/jfs/Kconfig
View File

@ -3,6 +3,7 @@ config JFS_FS
tristate "JFS filesystem support"
select NLS
select CRC32
select LEGACY_DIRECT_IO
help
This is a port of IBM's Journaled Filesystem . More information is
available in the file <file:Documentation/admin-guide/jfs.rst>.

1
fs/nilfs2/Kconfig
View File

@ -2,6 +2,7 @@
config NILFS2_FS
tristate "NILFS2 file system support"
select CRC32
select LEGACY_DIRECT_IO
help
NILFS2 is a log-structured file system (LFS) supporting continuous
snapshotting. In addition to versioning capability of the entire

1
fs/ntfs3/Kconfig
View File

@ -2,6 +2,7 @@
config NTFS3_FS
tristate "NTFS Read-Write file system support"
select NLS
select LEGACY_DIRECT_IO
help
Windows OS native file system (NTFS) support up to NTFS version 3.1.

1
fs/ocfs2/Kconfig
View File

@ -7,6 +7,7 @@ config OCFS2_FS
select QUOTA
select QUOTA_TREE
select FS_POSIX_ACL
select LEGACY_DIRECT_IO
help
OCFS2 is a general purpose extent based shared disk cluster file
system with many similarities to ext3. It supports 64 bit inode

1
fs/reiserfs/Kconfig
View File

@ -2,6 +2,7 @@
config REISERFS_FS
tristate "Reiserfs support (deprecated)"
select CRC32
select LEGACY_DIRECT_IO
help
Reiserfs is deprecated and scheduled to be removed from the kernel
in 2025. If you are still using it, please migrate to another

24
fs/super.c
View File

@ -1776,3 +1776,27 @@ int thaw_super(struct super_block *sb)
return thaw_super_locked(sb);
}
EXPORT_SYMBOL(thaw_super);
/*
* Create workqueue for deferred direct IO completions. We allocate the
* workqueue when it's first needed. This avoids creating workqueue for
* filesystems that don't need it and also allows us to create the workqueue
* late enough so the we can include s_id in the name of the workqueue.
*/
int sb_init_dio_done_wq(struct super_block *sb)
{
struct workqueue_struct *old;
struct workqueue_struct *wq = alloc_workqueue("dio/%s",
WQ_MEM_RECLAIM, 0,
sb->s_id);
if (!wq)
return -ENOMEM;
/*
* This has to be atomic as more DIOs can race to create the workqueue
*/
old = cmpxchg(&sb->s_dio_done_wq, NULL, wq);
/* Someone created workqueue before us? Free ours... */
if (old)
destroy_workqueue(wq);
return 0;
}

1
fs/udf/Kconfig
View File

@ -3,6 +3,7 @@ config UDF_FS
tristate "UDF file system support"
select CRC_ITU_T
select NLS
select LEGACY_DIRECT_IO
help
This is a file system used on some CD-ROMs and DVDs. Since the
file system is supported by multiple operating systems and is more