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backing_dev_info is entirely removed.

Browse Source 
The assignments to it is no longer needed at all. All references can be
dropped since v6.4-rc4-163-g0d625446d0a4.

Signed-off-by: Auke Kok <auke.kok@versity.com>
This commit is contained in:
Auke Kok
2024-11-08 13:32:21 -05:00
parent d1092cdbe9
commit 621271f8cf
2 changed files with 13 additions and 0 deletions
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9
kmod/src/Makefile.kernelcompat
View File

@@ -413,3 +413,12 @@ endif
ifneq (,$(shell grep 'blkdev_put.struct block_device .bdev, void .holder' include/linux/blkdev.h))
ccflags-y += -DKC_BLKDEV_PUT_HOLDER_ARG
endif
#
# v6.4-rc4-163-g0d625446d0a4
#
# Entirely removes current->backing_dev_info to ultimately remove buffer_head
# completely at some point.
ifneq (,$(shell grep 'struct backing_dev_info.*backing_dev_info;' include/linux/sched.h))
ccflags-y += -DKC_CURRENT_BACKING_DEV_INFO
endif

4
kmod/src/ioctl.c
View File

@@ -524,7 +524,9 @@ static long scoutfs_ioc_stage(struct file *file, unsigned long arg)
}
si->staging = true;
#ifdef KC_CURRENT_BACKING_DEV_INFO
current->backing_dev_info = inode_to_bdi(inode);
#endif
pos = args.offset;
written = 0;
@@ -537,7 +539,9 @@ static long scoutfs_ioc_stage(struct file *file, unsigned long arg)
} while (ret > 0 && written < args.length);
si->staging = false;
#ifdef KC_CURRENT_BACKING_DEV_INFO
current->backing_dev_info = NULL;
#endif
out:
scoutfs_per_task_del(&si->pt_data_lock, &pt_ent);
scoutfs_unlock(sb, lock, SCOUTFS_LOCK_WRITE);