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fs: remove kiocb.ki_hint

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This field is entirely unused now except for a tracepoint in f2fs, so
remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220308060529.736277-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-03-08 07:05:28 +01:00 committed by Jens Axboe
parent c75e707fe1
commit 41d36a9f3e
6 changed files with 1 additions and 24 deletions
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1
fs/aio.c
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@ -1478,7 +1478,6 @@ static int aio_prep_rw(struct kiocb *req, const struct iocb *iocb)
req->ki_flags = iocb_flags(req->ki_filp);
if (iocb->aio_flags & IOCB_FLAG_RESFD)
req->ki_flags |= IOCB_EVENTFD;
req->ki_hint = ki_hint_validate(file_write_hint(req->ki_filp));
if (iocb->aio_flags & IOCB_FLAG_IOPRIO) {
/*
* If the IOCB_FLAG_IOPRIO flag of aio_flags is set, then

2
fs/cachefiles/io.c
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@ -138,7 +138,6 @@ static int cachefiles_read(struct netfs_cache_resources *cres,
ki->iocb.ki_filp = file;
ki->iocb.ki_pos = start_pos + skipped;
ki->iocb.ki_flags = IOCB_DIRECT;
ki->iocb.ki_hint = ki_hint_validate(file_write_hint(file));
ki->iocb.ki_ioprio = get_current_ioprio();
ki->skipped = skipped;
ki->object = object;
@ -313,7 +312,6 @@ static int cachefiles_write(struct netfs_cache_resources *cres,
ki->iocb.ki_filp = file;
ki->iocb.ki_pos = start_pos;
ki->iocb.ki_flags = IOCB_DIRECT | IOCB_WRITE;
ki->iocb.ki_hint = ki_hint_validate(file_write_hint(file));
ki->iocb.ki_ioprio = get_current_ioprio();
ki->object = object;
ki->inval_counter = cres->inval_counter;

6
fs/f2fs/file.c
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@ -4479,10 +4479,8 @@ static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
struct f2fs_inode_info *fi = F2FS_I(inode);
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
const bool do_opu = f2fs_lfs_mode(sbi);
const int whint_mode = F2FS_OPTION(sbi).whint_mode;
const loff_t pos = iocb->ki_pos;
const ssize_t count = iov_iter_count(from);
const enum rw_hint hint = iocb->ki_hint;
unsigned int dio_flags;
struct iomap_dio *dio;
ssize_t ret;
@ -4515,8 +4513,6 @@ static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
if (do_opu)
down_read(&fi->i_gc_rwsem[READ]);
}
if (whint_mode == WHINT_MODE_OFF)
iocb->ki_hint = WRITE_LIFE_NOT_SET;
/*
* We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
@ -4539,8 +4535,6 @@ static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
ret = iomap_dio_complete(dio);
}
if (whint_mode == WHINT_MODE_OFF)
iocb->ki_hint = hint;
if (do_opu)
up_read(&fi->i_gc_rwsem[READ]);
up_read(&fi->i_gc_rwsem[WRITE]);

1
fs/io_uring.c
View File

@ -3747,7 +3747,6 @@ static int io_write_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
if (unlikely(!(req->file->f_mode & FMODE_WRITE)))
return -EBADF;
req->rw.kiocb.ki_hint = ki_hint_validate(file_write_hint(req->file));
return io_prep_rw(req, sqe);
}

12
include/linux/fs.h
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@ -327,7 +327,6 @@ struct kiocb {
void (*ki_complete)(struct kiocb *iocb, long ret);
void *private;
int ki_flags;
u16 ki_hint;
u16 ki_ioprio; /* See linux/ioprio.h */
struct wait_page_queue *ki_waitq; /* for async buffered IO */
randomized_struct_fields_end
@ -2225,21 +2224,11 @@ static inline enum rw_hint file_write_hint(struct file *file)
static inline int iocb_flags(struct file *file);
static inline u16 ki_hint_validate(enum rw_hint hint)
{
typeof(((struct kiocb *)0)->ki_hint) max_hint = -1;
if (hint <= max_hint)
return hint;
return 0;
}
static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
{
*kiocb = (struct kiocb) {
.ki_filp = filp,
.ki_flags = iocb_flags(filp),
.ki_hint = ki_hint_validate(file_write_hint(filp)),
.ki_ioprio = get_current_ioprio(),
};
}
@ -2250,7 +2239,6 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
*kiocb = (struct kiocb) {
.ki_filp = filp,
.ki_flags = kiocb_src->ki_flags,
.ki_hint = kiocb_src->ki_hint,
.ki_ioprio = kiocb_src->ki_ioprio,
.ki_pos = kiocb_src->ki_pos,
};

3
include/trace/events/f2fs.h
View File

@ -956,12 +956,11 @@ TRACE_EVENT(f2fs_direct_IO_enter,
__entry->rw = rw;
),
TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu ki_flags = %x ki_hint = %x ki_ioprio = %x rw = %d",
TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu ki_flags = %x ki_ioprio = %x rw = %d",
show_dev_ino(__entry),
__entry->iocb->ki_pos,
__entry->len,
__entry->iocb->ki_flags,
__entry->iocb->ki_hint,
__entry->iocb->ki_ioprio,
__entry->rw)
);