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fs: remove sb->s_mode

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There is no real need to store the open mode in the super_block now.
It is only used by f2fs, which can easily recalculate it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20230608110258.189493-18-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-08 13:02:45 +02:00 committed by Jens Axboe
parent 3f0b3e785e
commit 81b1fb7d17
4 changed files with 6 additions and 8 deletions
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10
fs/f2fs/super.c
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@ -3993,6 +3993,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
unsigned int max_devices = MAX_DEVICES;
unsigned int logical_blksize;
fmode_t mode = sb_open_mode(sbi->sb->s_flags);
int i;
/* Initialize single device information */
@ -4024,8 +4025,8 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
if (max_devices == 1) {
/* Single zoned block device mount */
FDEV(0).bdev =
blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
sbi->sb->s_mode, sbi->sb->s_type, NULL);
blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, mode,
sbi->sb->s_type, NULL);
} else {
/* Multi-device mount */
memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
@ -4043,8 +4044,9 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
(FDEV(i).total_segments <<
sbi->log_blocks_per_seg) - 1;
}
FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
sbi->sb->s_mode, sbi->sb->s_type, NULL);
FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, mode,
sbi->sb->s_type,
NULL);
}
if (IS_ERR(FDEV(i).bdev))
return PTR_ERR(FDEV(i).bdev);

1
fs/nilfs2/super.c
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@ -1316,7 +1316,6 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
s_new = true;
/* New superblock instance created */
s->s_mode = mode;
snprintf(s->s_id, sizeof(s->s_id), "%pg", sd.bdev);
sb_set_blocksize(s, block_size(sd.bdev));

2
fs/super.c
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@ -1308,7 +1308,6 @@ int get_tree_bdev(struct fs_context *fc,
blkdev_put(bdev, fc->fs_type);
down_write(&s->s_umount);
} else {
s->s_mode = mode;
snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s",
fc->fs_type->name, s->s_id);
@ -1382,7 +1381,6 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
blkdev_put(bdev, fs_type);
down_write(&s->s_umount);
} else {
s->s_mode = mode;
snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s",
fs_type->name, s->s_id);

1
include/linux/fs.h
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@ -1215,7 +1215,6 @@ struct super_block {
uuid_t s_uuid; /* UUID */
unsigned int s_max_links;
fmode_t s_mode;
/*
* The next field is for VFS *only*. No filesystems have any business