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| author | Ryusuke Konishi <konishi.ryusuke@gmail.com> | 2024-01-22 23:02:00 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 15:38:53 -0800 |
| commit | 1244a6d7a2c1de669f9682e8a0bd46a53c3be233 (patch) | |
| tree | 3935275b9db3fb90251505975ad34e8d1e9d8226 /fs/nilfs2/cpfile.h | |
| parent | cce259b4c3b13a82541992c56f9c8238451da859 (diff) | |
| download | linux-1244a6d7a2c1de669f9682e8a0bd46a53c3be233.tar.gz linux-1244a6d7a2c1de669f9682e8a0bd46a53c3be233.tar.bz2 linux-1244a6d7a2c1de669f9682e8a0bd46a53c3be233.zip | |
nilfs2: localize highmem mapping for checkpoint reading within cpfile
Move the code for reading from a checkpoint entry that is performed in
nilfs_attach_checkpoint() to the cpfile side, and make the page mapping
local and temporary. And use kmap_local instead of kmap to access the
checkpoint entry page.
In order to load the ifile inode information included in the checkpoint
entry within the inode lock section of nilfs_ifile_read(), the newly added
checkpoint reading method nilfs_cpfile_read_checkpoint() is called
indirectly via nilfs_ifile_read() instead of from
nilfs_attach_checkpoint().
Link: https://lkml.kernel.org/r/20240122140202.6950-14-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/cpfile.h')
| -rw-r--r-- | fs/nilfs2/cpfile.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nilfs2/cpfile.h b/fs/nilfs2/cpfile.h index aa1408a3af01..2cfa14011bc8 100644 --- a/fs/nilfs2/cpfile.h +++ b/fs/nilfs2/cpfile.h @@ -19,6 +19,8 @@ int nilfs_cpfile_get_checkpoint(struct inode *, __u64, int, struct nilfs_checkpoint **, struct buffer_head **); +int nilfs_cpfile_read_checkpoint(struct inode *cpfile, __u64 cno, + struct nilfs_root *root, struct inode *ifile); int nilfs_cpfile_create_checkpoint(struct inode *cpfile, __u64 cno); void nilfs_cpfile_put_checkpoint(struct inode *, __u64, struct buffer_head *); int nilfs_cpfile_finalize_checkpoint(struct inode *cpfile, __u64 cno, |