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swap: port block device usage to file

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Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-5-adbd023e19cc@kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2024-01-23 14:26:22 +01:00
parent a28d893eb3
commit 16ca5dfd8d
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GPG Key ID: 91C61BC06578DCA2
2 changed files with 12 additions and 12 deletions
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2
include/linux/swap.h
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@ -298,7 +298,7 @@ struct swap_info_struct {
unsigned int __percpu *cluster_next_cpu; /*percpu index for next allocation */
struct percpu_cluster __percpu *percpu_cluster; /* per cpu's swap location */
struct rb_root swap_extent_root;/* root of the swap extent rbtree */
struct bdev_handle *bdev_handle;/* open handle of the bdev */
struct file *bdev_file; /* open handle of the bdev */
struct block_device *bdev; /* swap device or bdev of swap file */
struct file *swap_file; /* seldom referenced */
unsigned int old_block_size; /* seldom referenced */

22
mm/swapfile.c
View File

@ -2532,10 +2532,10 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
exit_swap_address_space(p->type);
inode = mapping->host;
if (p->bdev_handle) {
if (p->bdev_file) {
set_blocksize(p->bdev, old_block_size);
bdev_release(p->bdev_handle);
p->bdev_handle = NULL;
fput(p->bdev_file);
p->bdev_file = NULL;
}
inode_lock(inode);
@ -2765,14 +2765,14 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
int error;
if (S_ISBLK(inode->i_mode)) {
p->bdev_handle = bdev_open_by_dev(inode->i_rdev,
p->bdev_file = bdev_file_open_by_dev(inode->i_rdev,
BLK_OPEN_READ | BLK_OPEN_WRITE, p, NULL);
if (IS_ERR(p->bdev_handle)) {
error = PTR_ERR(p->bdev_handle);
p->bdev_handle = NULL;
if (IS_ERR(p->bdev_file)) {
error = PTR_ERR(p->bdev_file);
p->bdev_file = NULL;
return error;
}
p->bdev = p->bdev_handle->bdev;
p->bdev = file_bdev(p->bdev_file);
p->old_block_size = block_size(p->bdev);
error = set_blocksize(p->bdev, PAGE_SIZE);
if (error < 0)
@ -3208,10 +3208,10 @@ bad_swap:
p->percpu_cluster = NULL;
free_percpu(p->cluster_next_cpu);
p->cluster_next_cpu = NULL;
if (p->bdev_handle) {
if (p->bdev_file) {
set_blocksize(p->bdev, p->old_block_size);
bdev_release(p->bdev_handle);
p->bdev_handle = NULL;
fput(p->bdev_file);
p->bdev_file = NULL;
}
inode = NULL;
destroy_swap_extents(p);