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@ -42,11 +42,6 @@
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#include "vxfs_extern.h"
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struct kmem_cache *vxfs_inode_cachep;
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static struct inode * vxfs_get_fake_inode(struct super_block *,
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struct vxfs_inode_info *);
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#ifdef DIAGNOSTIC
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/*
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* Dump inode contents (partially).
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@ -70,156 +65,6 @@ vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino)
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}
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#endif
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static inline void dip2vip_cpy(struct vxfs_sb_info *sbi,
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struct vxfs_inode_info *vip, struct vxfs_dinode *dip)
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{
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vip->vii_mode = fs32_to_cpu(sbi, dip->vdi_mode);
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vip->vii_nlink = fs32_to_cpu(sbi, dip->vdi_nlink);
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vip->vii_uid = fs32_to_cpu(sbi, dip->vdi_uid);
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vip->vii_gid = fs32_to_cpu(sbi, dip->vdi_gid);
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vip->vii_size = fs64_to_cpu(sbi, dip->vdi_size);
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vip->vii_atime = fs32_to_cpu(sbi, dip->vdi_atime);
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vip->vii_autime = fs32_to_cpu(sbi, dip->vdi_autime);
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vip->vii_mtime = fs32_to_cpu(sbi, dip->vdi_mtime);
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vip->vii_mutime = fs32_to_cpu(sbi, dip->vdi_mutime);
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vip->vii_ctime = fs32_to_cpu(sbi, dip->vdi_ctime);
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vip->vii_cutime = fs32_to_cpu(sbi, dip->vdi_cutime);
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vip->vii_orgtype = dip->vdi_orgtype;
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vip->vii_blocks = fs32_to_cpu(sbi, dip->vdi_blocks);
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vip->vii_gen = fs32_to_cpu(sbi, dip->vdi_gen);
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if (VXFS_ISDIR(vip))
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vip->vii_dotdot = fs32_to_cpu(sbi, dip->vdi_dotdot);
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else if (!VXFS_ISREG(vip) && !VXFS_ISLNK(vip))
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vip->vii_rdev = fs32_to_cpu(sbi, dip->vdi_rdev);
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/* don't endian swap the fields that differ by orgtype */
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memcpy(&vip->vii_org, &dip->vdi_org, sizeof(vip->vii_org));
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}
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/**
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* vxfs_blkiget - find inode based on extent #
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* @sbp: superblock of the filesystem we search in
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* @extent: number of the extent to search
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* @ino: inode number to search
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*
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* Description:
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* vxfs_blkiget searches inode @ino in the filesystem described by
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* @sbp in the extent @extent.
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* Returns the matching VxFS inode on success, else a NULL pointer.
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*
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* NOTE:
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* While __vxfs_iget uses the pagecache vxfs_blkiget uses the
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* buffercache. This function should not be used outside the
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* read_super() method, otherwise the data may be incoherent.
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*/
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struct inode *
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vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
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{
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struct buffer_head *bp;
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struct inode *inode;
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u_long block, offset;
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block = extent + ((ino * VXFS_ISIZE) / sbp->s_blocksize);
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offset = ((ino % (sbp->s_blocksize / VXFS_ISIZE)) * VXFS_ISIZE);
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bp = sb_bread(sbp, block);
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if (bp && buffer_mapped(bp)) {
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struct vxfs_inode_info *vip;
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struct vxfs_dinode *dip;
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if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL)))
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goto fail;
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dip = (struct vxfs_dinode *)(bp->b_data + offset);
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dip2vip_cpy(VXFS_SBI(sbp), vip, dip);
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#ifdef DIAGNOSTIC
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vxfs_dumpi(vip, ino);
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#endif
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brelse(bp);
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inode = vxfs_get_fake_inode(sbp, vip);
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if (!inode)
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kmem_cache_free(vxfs_inode_cachep, vip);
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return inode;
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}
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fail:
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printk(KERN_WARNING "vxfs: unable to read block %ld\n", block);
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brelse(bp);
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return NULL;
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}
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/**
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* __vxfs_iget - generic find inode facility
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* @sbp: VFS superblock
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* @ino: inode number
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* @ilistp: inode list
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*
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* Description:
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* Search the for inode number @ino in the filesystem
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* described by @sbp. Use the specified inode table (@ilistp).
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* Returns the matching inode on success, else an error code.
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*/
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static struct vxfs_inode_info *
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__vxfs_iget(ino_t ino, struct inode *ilistp)
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{
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struct page *pp;
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u_long offset;
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offset = (ino % (PAGE_SIZE / VXFS_ISIZE)) * VXFS_ISIZE;
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pp = vxfs_get_page(ilistp->i_mapping, ino * VXFS_ISIZE / PAGE_SIZE);
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if (!IS_ERR(pp)) {
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struct vxfs_inode_info *vip;
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struct vxfs_dinode *dip;
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caddr_t kaddr = (char *)page_address(pp);
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if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL)))
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goto fail;
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dip = (struct vxfs_dinode *)(kaddr + offset);
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dip2vip_cpy(VXFS_SBI(ilistp->i_sb), vip, dip);
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#ifdef DIAGNOSTIC
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vxfs_dumpi(vip, ino);
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#endif
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vxfs_put_page(pp);
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return (vip);
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}
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printk(KERN_WARNING "vxfs: error on page %p\n", pp);
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return ERR_CAST(pp);
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fail:
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printk(KERN_WARNING "vxfs: unable to read inode %ld\n", (unsigned long)ino);
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vxfs_put_page(pp);
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return ERR_PTR(-ENOMEM);
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}
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/**
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* vxfs_stiget - find inode using the structural inode list
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* @sbp: VFS superblock
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* @ino: inode #
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*
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* Description:
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* Find inode @ino in the filesystem described by @sbp using
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* the structural inode list.
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* Returns the matching inode on success, else a NULL pointer.
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*/
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struct inode *
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vxfs_stiget(struct super_block *sbp, ino_t ino)
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{
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struct vxfs_inode_info *vip;
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struct inode *inode;
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vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
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if (IS_ERR(vip))
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return NULL;
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inode = vxfs_get_fake_inode(sbp, vip);
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if (!inode)
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kmem_cache_free(vxfs_inode_cachep, vip);
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return inode;
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}
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/**
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* vxfs_transmod - mode for a VxFS inode
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* @vip: VxFS inode
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@ -251,61 +96,172 @@ vxfs_transmod(struct vxfs_inode_info *vip)
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return (ret);
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}
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/**
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* vxfs_iinit- helper to fill inode fields
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* @ip: VFS inode
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* @vip: VxFS inode
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*
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* Description:
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* vxfs_instino is a helper function to fill in all relevant
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* fields in @ip from @vip.
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*/
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static void
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vxfs_iinit(struct inode *ip, struct vxfs_inode_info *vip)
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static inline void dip2vip_cpy(struct vxfs_sb_info *sbi,
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struct vxfs_inode_info *vip, struct vxfs_dinode *dip)
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{
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struct inode *inode = &vip->vfs_inode;
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ip->i_mode = vxfs_transmod(vip);
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i_uid_write(ip, (uid_t)vip->vii_uid);
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i_gid_write(ip, (gid_t)vip->vii_gid);
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vip->vii_mode = fs32_to_cpu(sbi, dip->vdi_mode);
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vip->vii_nlink = fs32_to_cpu(sbi, dip->vdi_nlink);
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vip->vii_uid = fs32_to_cpu(sbi, dip->vdi_uid);
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vip->vii_gid = fs32_to_cpu(sbi, dip->vdi_gid);
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vip->vii_size = fs64_to_cpu(sbi, dip->vdi_size);
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vip->vii_atime = fs32_to_cpu(sbi, dip->vdi_atime);
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vip->vii_autime = fs32_to_cpu(sbi, dip->vdi_autime);
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vip->vii_mtime = fs32_to_cpu(sbi, dip->vdi_mtime);
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vip->vii_mutime = fs32_to_cpu(sbi, dip->vdi_mutime);
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vip->vii_ctime = fs32_to_cpu(sbi, dip->vdi_ctime);
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vip->vii_cutime = fs32_to_cpu(sbi, dip->vdi_cutime);
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vip->vii_orgtype = dip->vdi_orgtype;
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set_nlink(ip, vip->vii_nlink);
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ip->i_size = vip->vii_size;
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vip->vii_blocks = fs32_to_cpu(sbi, dip->vdi_blocks);
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vip->vii_gen = fs32_to_cpu(sbi, dip->vdi_gen);
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ip->i_atime.tv_sec = vip->vii_atime;
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ip->i_ctime.tv_sec = vip->vii_ctime;
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ip->i_mtime.tv_sec = vip->vii_mtime;
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ip->i_atime.tv_nsec = 0;
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ip->i_ctime.tv_nsec = 0;
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ip->i_mtime.tv_nsec = 0;
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if (VXFS_ISDIR(vip))
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vip->vii_dotdot = fs32_to_cpu(sbi, dip->vdi_dotdot);
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else if (!VXFS_ISREG(vip) && !VXFS_ISLNK(vip))
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vip->vii_rdev = fs32_to_cpu(sbi, dip->vdi_rdev);
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ip->i_blocks = vip->vii_blocks;
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ip->i_generation = vip->vii_gen;
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/* don't endian swap the fields that differ by orgtype */
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memcpy(&vip->vii_org, &dip->vdi_org, sizeof(vip->vii_org));
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ip->i_private = vip;
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inode->i_mode = vxfs_transmod(vip);
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i_uid_write(inode, (uid_t)vip->vii_uid);
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i_gid_write(inode, (gid_t)vip->vii_gid);
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set_nlink(inode, vip->vii_nlink);
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inode->i_size = vip->vii_size;
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inode->i_atime.tv_sec = vip->vii_atime;
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inode->i_ctime.tv_sec = vip->vii_ctime;
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inode->i_mtime.tv_sec = vip->vii_mtime;
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inode->i_atime.tv_nsec = 0;
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inode->i_ctime.tv_nsec = 0;
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inode->i_mtime.tv_nsec = 0;
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inode->i_blocks = vip->vii_blocks;
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inode->i_generation = vip->vii_gen;
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}
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/**
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* vxfs_get_fake_inode - get fake inode structure
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* @sbp: filesystem superblock
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* @vip: fspriv inode
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* vxfs_blkiget - find inode based on extent #
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* @sbp: superblock of the filesystem we search in
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* @extent: number of the extent to search
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* @ino: inode number to search
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*
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* Description:
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* vxfs_fake_inode gets a fake inode (not in the inode hash) for a
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* superblock, vxfs_inode pair.
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* Returns the filled VFS inode.
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* vxfs_blkiget searches inode @ino in the filesystem described by
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* @sbp in the extent @extent.
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* Returns the matching VxFS inode on success, else a NULL pointer.
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*
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* NOTE:
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* While __vxfs_iget uses the pagecache vxfs_blkiget uses the
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* buffercache. This function should not be used outside the
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* read_super() method, otherwise the data may be incoherent.
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*/
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static struct inode *
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vxfs_get_fake_inode(struct super_block *sbp, struct vxfs_inode_info *vip)
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struct inode *
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vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
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{
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struct inode *ip = NULL;
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struct buffer_head *bp;
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struct inode *inode;
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u_long block, offset;
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if ((ip = new_inode(sbp))) {
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ip->i_ino = get_next_ino();
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vxfs_iinit(ip, vip);
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ip->i_mapping->a_ops = &vxfs_aops;
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inode = new_inode(sbp);
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if (!inode)
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return NULL;
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inode->i_ino = get_next_ino();
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block = extent + ((ino * VXFS_ISIZE) / sbp->s_blocksize);
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offset = ((ino % (sbp->s_blocksize / VXFS_ISIZE)) * VXFS_ISIZE);
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bp = sb_bread(sbp, block);
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if (bp && buffer_mapped(bp)) {
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struct vxfs_inode_info *vip = VXFS_INO(inode);
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|
struct vxfs_dinode *dip;
|
|
|
|
|
|
|
|
|
|
dip = (struct vxfs_dinode *)(bp->b_data + offset);
|
|
|
|
|
dip2vip_cpy(VXFS_SBI(sbp), vip, dip);
|
|
|
|
|
vip->vfs_inode.i_mapping->a_ops = &vxfs_aops;
|
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
|
vxfs_dumpi(vip, ino);
|
|
|
|
|
#endif
|
|
|
|
|
brelse(bp);
|
|
|
|
|
return inode;
|
|
|
|
|
}
|
|
|
|
|
return (ip);
|
|
|
|
|
|
|
|
|
|
printk(KERN_WARNING "vxfs: unable to read block %ld\n", block);
|
|
|
|
|
brelse(bp);
|
|
|
|
|
iput(inode);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* __vxfs_iget - generic find inode facility
|
|
|
|
|
* @ilistp: inode list
|
|
|
|
|
* @vip: VxFS inode to fill in
|
|
|
|
|
* @ino: inode number
|
|
|
|
|
*
|
|
|
|
|
* Description:
|
|
|
|
|
* Search the for inode number @ino in the filesystem
|
|
|
|
|
* described by @sbp. Use the specified inode table (@ilistp).
|
|
|
|
|
* Returns the matching inode on success, else an error code.
|
|
|
|
|
*/
|
|
|
|
|
static int
|
|
|
|
|
__vxfs_iget(struct inode *ilistp, struct vxfs_inode_info *vip, ino_t ino)
|
|
|
|
|
{
|
|
|
|
|
struct page *pp;
|
|
|
|
|
u_long offset;
|
|
|
|
|
|
|
|
|
|
offset = (ino % (PAGE_SIZE / VXFS_ISIZE)) * VXFS_ISIZE;
|
|
|
|
|
pp = vxfs_get_page(ilistp->i_mapping, ino * VXFS_ISIZE / PAGE_SIZE);
|
|
|
|
|
|
|
|
|
|
if (!IS_ERR(pp)) {
|
|
|
|
|
struct vxfs_dinode *dip;
|
|
|
|
|
caddr_t kaddr = (char *)page_address(pp);
|
|
|
|
|
|
|
|
|
|
dip = (struct vxfs_dinode *)(kaddr + offset);
|
|
|
|
|
dip2vip_cpy(VXFS_SBI(ilistp->i_sb), vip, dip);
|
|
|
|
|
vip->vfs_inode.i_mapping->a_ops = &vxfs_aops;
|
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
|
vxfs_dumpi(vip, ino);
|
|
|
|
|
#endif
|
|
|
|
|
vxfs_put_page(pp);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
printk(KERN_WARNING "vxfs: error on page 0x%p for inode %ld\n",
|
|
|
|
|
pp, (unsigned long)ino);
|
|
|
|
|
return PTR_ERR(pp);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* vxfs_stiget - find inode using the structural inode list
|
|
|
|
|
* @sbp: VFS superblock
|
|
|
|
|
* @ino: inode #
|
|
|
|
|
*
|
|
|
|
|
* Description:
|
|
|
|
|
* Find inode @ino in the filesystem described by @sbp using
|
|
|
|
|
* the structural inode list.
|
|
|
|
|
* Returns the matching inode on success, else a NULL pointer.
|
|
|
|
|
*/
|
|
|
|
|
struct inode *
|
|
|
|
|
vxfs_stiget(struct super_block *sbp, ino_t ino)
|
|
|
|
|
{
|
|
|
|
|
struct inode *inode;
|
|
|
|
|
int error;
|
|
|
|
|
|
|
|
|
|
inode = new_inode(sbp);
|
|
|
|
|
if (!inode)
|
|
|
|
|
return NULL;
|
|
|
|
|
inode->i_ino = get_next_ino();
|
|
|
|
|
|
|
|
|
|
error = __vxfs_iget(VXFS_SBI(sbp)->vsi_stilist, VXFS_INO(inode), ino);
|
|
|
|
|
if (error) {
|
|
|
|
|
iput(inode);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return inode;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@ -323,6 +279,7 @@ vxfs_iget(struct super_block *sbp, ino_t ino)
|
|
|
|
|
struct vxfs_inode_info *vip;
|
|
|
|
|
const struct address_space_operations *aops;
|
|
|
|
|
struct inode *ip;
|
|
|
|
|
int error;
|
|
|
|
|
|
|
|
|
|
ip = iget_locked(sbp, ino);
|
|
|
|
|
if (!ip)
|
|
|
|
@ -330,14 +287,13 @@ vxfs_iget(struct super_block *sbp, ino_t ino)
|
|
|
|
|
if (!(ip->i_state & I_NEW))
|
|
|
|
|
return ip;
|
|
|
|
|
|
|
|
|
|
vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist);
|
|
|
|
|
if (IS_ERR(vip)) {
|
|
|
|
|
vip = VXFS_INO(ip);
|
|
|
|
|
error = __vxfs_iget(VXFS_SBI(sbp)->vsi_ilist, vip, ino);
|
|
|
|
|
if (error) {
|
|
|
|
|
iget_failed(ip);
|
|
|
|
|
return ERR_CAST(vip);
|
|
|
|
|
return ERR_PTR(error);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vxfs_iinit(ip, vip);
|
|
|
|
|
|
|
|
|
|
if (VXFS_ISIMMED(vip))
|
|
|
|
|
aops = &vxfs_immed_aops;
|
|
|
|
|
else
|
|
|
|
@ -368,12 +324,6 @@ vxfs_iget(struct super_block *sbp, ino_t ino)
|
|
|
|
|
return ip;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void vxfs_i_callback(struct rcu_head *head)
|
|
|
|
|
{
|
|
|
|
|
struct inode *inode = container_of(head, struct inode, i_rcu);
|
|
|
|
|
kmem_cache_free(vxfs_inode_cachep, inode->i_private);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* vxfs_evict_inode - remove inode from main memory
|
|
|
|
|
* @ip: inode to discard.
|
|
|
|
@ -387,5 +337,4 @@ vxfs_evict_inode(struct inode *ip)
|
|
|
|
|
{
|
|
|
|
|
truncate_inode_pages_final(&ip->i_data);
|
|
|
|
|
clear_inode(ip);
|
|
|
|
|
call_rcu(&ip->i_rcu, vxfs_i_callback);
|
|
|
|
|
}
|
|
|
|
|