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Message-Id: <20240122140202.6950-15-konishi.ryusuke@gmail.com>
Date: Mon, 22 Jan 2024 23:02:01 +0900
From: Ryusuke Konishi <konishi.ryusuke@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-nilfs@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 14/15] nilfs2: remove nilfs_cpfile_{get,put}_checkpoint()
All calls to nilfs_cpfile_get_checkpoint() and
nilfs_cpfile_put_checkpoint() that call kmap() and kunmap() separately
are now gone, so remove these methods.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@...il.com>
---
fs/nilfs2/cpfile.c | 103 ---------------------------------------------
fs/nilfs2/cpfile.h | 4 --
2 files changed, 107 deletions(-)
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index 56e38843536b..b5bad332d630 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -254,92 +254,6 @@ int nilfs_cpfile_read_checkpoint(struct inode *cpfile, __u64 cno,
return ret;
}
-/**
- * nilfs_cpfile_get_checkpoint - get a checkpoint
- * @cpfile: inode of checkpoint file
- * @cno: checkpoint number
- * @create: create flag
- * @cpp: pointer to a checkpoint
- * @bhp: pointer to a buffer head
- *
- * Description: nilfs_cpfile_get_checkpoint() acquires the checkpoint
- * specified by @cno. A new checkpoint will be created if @cno is the current
- * checkpoint number and @create is nonzero.
- *
- * Return Value: On success, 0 is returned, and the checkpoint and the
- * buffer head of the buffer on which the checkpoint is located are stored in
- * the place pointed by @cpp and @bhp, respectively. On error, one of the
- * following negative error codes is returned.
- *
- * %-EIO - I/O error.
- *
- * %-ENOMEM - Insufficient amount of memory available.
- *
- * %-ENOENT - No such checkpoint.
- *
- * %-EINVAL - invalid checkpoint.
- */
-int nilfs_cpfile_get_checkpoint(struct inode *cpfile,
- __u64 cno,
- int create,
- struct nilfs_checkpoint **cpp,
- struct buffer_head **bhp)
-{
- struct buffer_head *header_bh, *cp_bh;
- struct nilfs_cpfile_header *header;
- struct nilfs_checkpoint *cp;
- void *kaddr;
- int ret;
-
- if (unlikely(cno < 1 || cno > nilfs_mdt_cno(cpfile) ||
- (cno < nilfs_mdt_cno(cpfile) && create)))
- return -EINVAL;
-
- down_write(&NILFS_MDT(cpfile)->mi_sem);
-
- ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
- if (ret < 0)
- goto out_sem;
- ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, create, &cp_bh);
- if (ret < 0)
- goto out_header;
- kaddr = kmap(cp_bh->b_page);
- cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
- if (nilfs_checkpoint_invalid(cp)) {
- if (!create) {
- kunmap(cp_bh->b_page);
- brelse(cp_bh);
- ret = -ENOENT;
- goto out_header;
- }
- /* a newly-created checkpoint */
- nilfs_checkpoint_clear_invalid(cp);
- if (!nilfs_cpfile_is_in_first(cpfile, cno))
- nilfs_cpfile_block_add_valid_checkpoints(cpfile, cp_bh,
- kaddr, 1);
- mark_buffer_dirty(cp_bh);
-
- kaddr = kmap_atomic(header_bh->b_page);
- header = nilfs_cpfile_block_get_header(cpfile, header_bh,
- kaddr);
- le64_add_cpu(&header->ch_ncheckpoints, 1);
- kunmap_atomic(kaddr);
- mark_buffer_dirty(header_bh);
- nilfs_mdt_mark_dirty(cpfile);
- }
-
- if (cpp != NULL)
- *cpp = cp;
- *bhp = cp_bh;
-
- out_header:
- brelse(header_bh);
-
- out_sem:
- up_write(&NILFS_MDT(cpfile)->mi_sem);
- return ret;
-}
-
/**
* nilfs_cpfile_create_checkpoint - create a checkpoint entry on cpfile
* @cpfile: checkpoint file inode
@@ -414,23 +328,6 @@ int nilfs_cpfile_create_checkpoint(struct inode *cpfile, __u64 cno)
return ret;
}
-/**
- * nilfs_cpfile_put_checkpoint - put a checkpoint
- * @cpfile: inode of checkpoint file
- * @cno: checkpoint number
- * @bh: buffer head
- *
- * Description: nilfs_cpfile_put_checkpoint() releases the checkpoint
- * specified by @cno. @bh must be the buffer head which has been returned by
- * a previous call to nilfs_cpfile_get_checkpoint() with @cno.
- */
-void nilfs_cpfile_put_checkpoint(struct inode *cpfile, __u64 cno,
- struct buffer_head *bh)
-{
- kunmap(bh->b_page);
- brelse(bh);
-}
-
/**
* nilfs_cpfile_finalize_checkpoint - fill in a checkpoint entry in cpfile
* @cpfile: checkpoint file inode
diff --git a/fs/nilfs2/cpfile.h b/fs/nilfs2/cpfile.h
index 2cfa14011bc8..f5b1d59289eb 100644
--- a/fs/nilfs2/cpfile.h
+++ b/fs/nilfs2/cpfile.h
@@ -16,13 +16,9 @@
#include <linux/nilfs2_ondisk.h> /* nilfs_inode, nilfs_checkpoint */
-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,
struct nilfs_root *root, __u64 blkinc,
time64_t ctime, bool minor);
--
2.34.1
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