nilfs2: do not acquire rwsem in nilfs_bmap_write()
It is now clear that nilfs_bmap_write() is only used to finalize logs written to disk. Concurrent bmap modification operations are not performed on bmaps in this context. Additionally, this function does not modify data used in read-only operations such as bmap lookups. Therefore, there is no need to acquire bmap->b_sem in nilfs_bmap_write(), so delete it. Link: https://lkml.kernel.org/r/20240122140202.6950-10-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -548,13 +548,10 @@ int nilfs_bmap_read(struct nilfs_bmap *bmap, struct nilfs_inode *raw_inode)
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*/
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void nilfs_bmap_write(struct nilfs_bmap *bmap, struct nilfs_inode *raw_inode)
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{
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down_write(&bmap->b_sem);
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memcpy(raw_inode->i_bmap, bmap->b_u.u_data,
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NILFS_INODE_BMAP_SIZE * sizeof(__le64));
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if (bmap->b_inode->i_ino == NILFS_DAT_INO)
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bmap->b_last_allocated_ptr = NILFS_BMAP_NEW_PTR_INIT;
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up_write(&bmap->b_sem);
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}
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void nilfs_bmap_init_gc(struct nilfs_bmap *bmap)
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