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erofs: Convert to use bdev_open_by_path() 

[ Upstream commit 49845720080dff0afd5813eaebf0758b01b6312c ]

Convert erofs to use bdev_open_by_path() and pass the handle around.

CC: Gao Xiang <xiang@kernel.org>
CC: Chao Yu <chao@kernel.org>
CC: linux-erofs@lists.ozlabs.org
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230927093442.25915-21-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 0f28be64d132 ("erofs: fix lockdep false positives on initializing erofs_pseudo_mnt")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jan Kara 2023-09-27 11:34:27 +02:00 committed by Sasha Levin
parent dd0bd42912
commit 613139a030
3 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/erofs/data.c
View File

@ -222,7 +222,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
up_read(&devs->rwsem);
return 0;
}
map->m_bdev = dif->bdev;
map->m_bdev = dif->bdev_handle->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
map->m_fscache = dif->fscache;
@ -240,7 +240,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
if (map->m_pa >= startoff &&
map->m_pa < startoff + length) {
map->m_pa -= startoff;
map->m_bdev = dif->bdev;
map->m_bdev = dif->bdev_handle->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
map->m_fscache = dif->fscache;

2
fs/erofs/internal.h
View File

@ -47,7 +47,7 @@ typedef u32 erofs_blk_t;
struct erofs_device_info {
char *path;
struct erofs_fscache *fscache;
struct block_device *bdev;
struct bdev_handle *bdev_handle;
struct dax_device *dax_dev;
u64 dax_part_off;

20
fs/erofs/super.c
View File

@ -174,7 +174,7 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
struct erofs_sb_info *sbi = EROFS_SB(sb);
struct erofs_fscache *fscache;
struct erofs_deviceslot *dis;
struct block_device *bdev;
struct bdev_handle *bdev_handle;
void *ptr;
ptr = erofs_read_metabuf(buf, sb, erofs_blknr(sb, *pos), EROFS_KMAP);
@ -198,13 +198,13 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
return PTR_ERR(fscache);
dif->fscache = fscache;
} else if (!sbi->devs->flatdev) {
bdev = blkdev_get_by_path(dif->path, BLK_OPEN_READ, sb->s_type,
NULL);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
dif->bdev = bdev;
dif->dax_dev = fs_dax_get_by_bdev(bdev, &dif->dax_part_off,
NULL, NULL);
bdev_handle = bdev_open_by_path(dif->path, BLK_OPEN_READ,
sb->s_type, NULL);
if (IS_ERR(bdev_handle))
return PTR_ERR(bdev_handle);
dif->bdev_handle = bdev_handle;
dif->dax_dev = fs_dax_get_by_bdev(bdev_handle->bdev,
&dif->dax_part_off, NULL, NULL);
}
dif->blocks = le32_to_cpu(dis->blocks);
@ -750,8 +750,8 @@ static int erofs_release_device_info(int id, void *ptr, void *data)
struct erofs_device_info *dif = ptr;
fs_put_dax(dif->dax_dev, NULL);
if (dif->bdev)
blkdev_put(dif->bdev, &erofs_fs_type);
if (dif->bdev_handle)
bdev_release(dif->bdev_handle);
erofs_fscache_unregister_cookie(dif->fscache);
dif->fscache = NULL;
kfree(dif->path);