xfs: factor out a helper to initialize a local format inode fork
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Родитель
f55532a0c0
Коммит
143f4aede7
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@ -257,15 +257,12 @@ xfs_dir2_block_to_sf(
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*
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* Convert the inode to local format and copy the data in.
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*/
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dp->i_df.if_flags &= ~XFS_IFEXTENTS;
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dp->i_df.if_flags |= XFS_IFINLINE;
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dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
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ASSERT(dp->i_df.if_bytes == 0);
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xfs_idata_realloc(dp, size, XFS_DATA_FORK);
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xfs_init_local_fork(dp, XFS_DATA_FORK, dst, size);
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dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
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dp->i_d.di_size = size;
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logflags |= XFS_ILOG_DDATA;
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memcpy(dp->i_df.if_u1.if_data, dst, size);
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dp->i_d.di_size = size;
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xfs_dir2_sf_check(args);
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out:
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xfs_trans_log_inode(args->trans, dp, logflags);
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@ -231,6 +231,34 @@ xfs_iformat_fork(
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return error;
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}
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void
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xfs_init_local_fork(
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struct xfs_inode *ip,
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int whichfork,
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const void *data,
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int size)
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{
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struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
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int real_size = 0;
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if (size == 0)
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ifp->if_u1.if_data = NULL;
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else if (size <= sizeof(ifp->if_u2.if_inline_data))
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ifp->if_u1.if_data = ifp->if_u2.if_inline_data;
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else {
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real_size = roundup(size, 4);
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ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP | KM_NOFS);
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}
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if (size)
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memcpy(ifp->if_u1.if_data, data, size);
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ifp->if_bytes = size;
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ifp->if_real_bytes = real_size;
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ifp->if_flags &= ~(XFS_IFEXTENTS | XFS_IFBROOT);
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ifp->if_flags |= XFS_IFINLINE;
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}
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/*
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* The file is in-lined in the on-disk inode.
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* If it fits into if_inline_data, then copy
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@ -248,8 +276,6 @@ xfs_iformat_local(
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int whichfork,
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int size)
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{
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xfs_ifork_t *ifp;
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int real_size;
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/*
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* If the size is unreasonable, then something
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@ -265,22 +291,8 @@ xfs_iformat_local(
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ip->i_mount, dip);
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return -EFSCORRUPTED;
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}
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ifp = XFS_IFORK_PTR(ip, whichfork);
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real_size = 0;
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if (size == 0)
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ifp->if_u1.if_data = NULL;
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else if (size <= sizeof(ifp->if_u2.if_inline_data))
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ifp->if_u1.if_data = ifp->if_u2.if_inline_data;
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else {
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real_size = roundup(size, 4);
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ifp->if_u1.if_data = kmem_alloc(real_size, KM_SLEEP | KM_NOFS);
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}
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ifp->if_bytes = size;
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ifp->if_real_bytes = real_size;
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if (size)
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memcpy(ifp->if_u1.if_data, XFS_DFORK_PTR(dip, whichfork), size);
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ifp->if_flags &= ~XFS_IFEXTENTS;
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ifp->if_flags |= XFS_IFINLINE;
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xfs_init_local_fork(ip, whichfork, XFS_DFORK_PTR(dip, whichfork), size);
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return 0;
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}
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@ -134,6 +134,7 @@ void xfs_iroot_realloc(struct xfs_inode *, int, int);
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int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
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int xfs_iextents_copy(struct xfs_inode *, struct xfs_bmbt_rec *,
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int);
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void xfs_init_local_fork(struct xfs_inode *, int, const void *, int);
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struct xfs_bmbt_rec_host *
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xfs_iext_get_ext(struct xfs_ifork *, xfs_extnum_t);
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@ -302,19 +302,11 @@ xfs_symlink(
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* If the symlink will fit into the inode, write it inline.
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*/
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if (pathlen <= XFS_IFORK_DSIZE(ip)) {
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xfs_idata_realloc(ip, pathlen, XFS_DATA_FORK);
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memcpy(ip->i_df.if_u1.if_data, target_path, pathlen);
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xfs_init_local_fork(ip, XFS_DATA_FORK, target_path, pathlen);
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ip->i_d.di_size = pathlen;
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/*
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* The inode was initially created in extent format.
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*/
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ip->i_df.if_flags &= ~(XFS_IFEXTENTS | XFS_IFBROOT);
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ip->i_df.if_flags |= XFS_IFINLINE;
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ip->i_d.di_format = XFS_DINODE_FMT_LOCAL;
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xfs_trans_log_inode(tp, ip, XFS_ILOG_DDATA | XFS_ILOG_CORE);
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} else {
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int offset;
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