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nilfs2: convert ifile to use kmap_local

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Convert deprecated kmap() and kmap_atomic() to use kmap_local for the
ifile metadata file used to manage disk inodes.

In some usages, calls to kmap_local and kunmap_local are split into
different helpers, but those usages can be safely changed to local thread
kmap.

Link: https://lkml.kernel.org/r/20240122140202.6950-11-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi 2024-01-22 23:01:57 +09:00 committed by Andrew Morton
parent 97d3e94031
commit 7282f2ae81
4 changed files with 9 additions and 10 deletions
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4
fs/nilfs2/ifile.c
View File

@ -115,11 +115,11 @@ int nilfs_ifile_delete_inode(struct inode *ifile, ino_t ino)
return ret;
}
kaddr = kmap_atomic(req.pr_entry_bh->b_page);
kaddr = kmap_local_page(req.pr_entry_bh->b_page);
raw_inode = nilfs_palloc_block_get_entry(ifile, req.pr_entry_nr,
req.pr_entry_bh, kaddr);
raw_inode->i_flags = 0;
kunmap_atomic(kaddr);
kunmap_local(kaddr);
mark_buffer_dirty(req.pr_entry_bh);
brelse(req.pr_entry_bh);

7
fs/nilfs2/ifile.h
View File

@ -21,15 +21,14 @@
static inline struct nilfs_inode *
nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
{
void *kaddr = kmap(ibh->b_page);
void *kaddr = kmap_local_page(ibh->b_page);
return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
}
static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
struct buffer_head *ibh)
static inline void nilfs_ifile_unmap_inode(struct nilfs_inode *raw_inode)
{
kunmap(ibh->b_page);
kunmap_local(raw_inode);
}
int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);

6
fs/nilfs2/inode.c
View File

@ -520,7 +520,7 @@ static int __nilfs_read_inode(struct super_block *sb,
inode, inode->i_mode,
huge_decode_dev(le64_to_cpu(raw_inode->i_device_code)));
}
nilfs_ifile_unmap_inode(root->ifile, ino, bh);
nilfs_ifile_unmap_inode(raw_inode);
brelse(bh);
up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
nilfs_set_inode_flags(inode);
@ -529,7 +529,7 @@ static int __nilfs_read_inode(struct super_block *sb,
return 0;
failed_unmap:
nilfs_ifile_unmap_inode(root->ifile, ino, bh);
nilfs_ifile_unmap_inode(raw_inode);
brelse(bh);
bad_inode:
@ -814,7 +814,7 @@ void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh, int flags)
raw_inode->i_device_code =
cpu_to_le64(huge_encode_dev(inode->i_rdev));
nilfs_ifile_unmap_inode(ifile, ino, ibh);
nilfs_ifile_unmap_inode(raw_inode);
}
#define NILFS_MAX_TRUNCATE_BLOCKS 16384 /* 64MB for 4KB block */

2
fs/nilfs2/segment.c
View File

@ -966,7 +966,7 @@ static void nilfs_fill_in_file_bmap(struct inode *ifile,
raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino,
ibh);
nilfs_bmap_write(ii->i_bmap, raw_inode);
nilfs_ifile_unmap_inode(ifile, ii->vfs_inode.i_ino, ibh);
nilfs_ifile_unmap_inode(raw_inode);
}
}