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[XFS] kill xfs_igrow_start and xfs_igrow_finish 

xfs_igrow_start just expands to xfs_zero_eof with two asserts that are
useless in the context of the only caller and some rather confusing
comments.

xfs_igrow_finish is just a few lines of code decorated again with useless
asserts and confusing comments.

Just kill those two and merge them into xfs_setattr.

SGI-PV: 981498
SGI-Modid: xfs-linux-melb:xfs-kern:31186a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Christoph Hellwig 2008-05-20 11:30:46 +10:00 committed by Niv Sardi
parent 48b62a1a97
commit 61436febae
3 changed files with 12 additions and 67 deletions
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61
fs/xfs/xfs_inode.c
View File

@ -1763,67 +1763,6 @@ xfs_itruncate_finish(
return 0;
}
/*
* xfs_igrow_start
*
* Do the first part of growing a file: zero any data in the last
* block that is beyond the old EOF. We need to do this before
* the inode is joined to the transaction to modify the i_size.
* That way we can drop the inode lock and call into the buffer
* cache to get the buffer mapping the EOF.
*/
int
xfs_igrow_start(
xfs_inode_t *ip,
xfs_fsize_t new_size,
cred_t *credp)
{
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT(new_size > ip->i_size);
/*
* Zero any pages that may have been created by
* xfs_write_file() beyond the end of the file
* and any blocks between the old and new file sizes.
*/
return xfs_zero_eof(ip, new_size, ip->i_size);
}
/*
* xfs_igrow_finish
*
* This routine is called to extend the size of a file.
* The inode must have both the iolock and the ilock locked
* for update and it must be a part of the current transaction.
* The xfs_igrow_start() function must have been called previously.
* If the change_flag is not zero, the inode change timestamp will
* be updated.
*/
void
xfs_igrow_finish(
xfs_trans_t *tp,
xfs_inode_t *ip,
xfs_fsize_t new_size,
int change_flag)
{
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL));
ASSERT(ip->i_transp == tp);
ASSERT(new_size > ip->i_size);
/*
* Update the file size. Update the inode change timestamp
* if change_flag set.
*/
ip->i_d.di_size = new_size;
ip->i_size = new_size;
if (change_flag)
xfs_ichgtime(ip, XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
/*
* This is called when the inode's link count goes to 0.
* We place the on-disk inode on a list in the AGI. It

3
fs/xfs/xfs_inode.h
View File

@ -507,9 +507,6 @@ int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
xfs_fsize_t, int, int);
int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *);
void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *,
xfs_fsize_t, int);
void xfs_idestroy_fork(xfs_inode_t *, int);
void xfs_idestroy(xfs_inode_t *);

15
fs/xfs/xfs_vnodeops.c
View File

@ -444,7 +444,13 @@ xfs_setattr(
code = 0;
if ((vap->va_size > ip->i_size) &&
(flags & ATTR_NOSIZETOK) == 0) {
code = xfs_igrow_start(ip, vap->va_size, credp);
/*
* Do the first part of growing a file: zero any data
* in the last block that is beyond the old EOF. We
* need to do this before the inode is joined to the
* transaction to modify the i_size.
*/
code = xfs_zero_eof(ip, vap->va_size, ip->i_size);
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
@ -512,8 +518,11 @@ xfs_setattr(
timeflags |= XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG;
if (vap->va_size > ip->i_size) {
xfs_igrow_finish(tp, ip, vap->va_size,
!(flags & ATTR_DMI));
ip->i_d.di_size = vap->va_size;
ip->i_size = vap->va_size;
if (!(flags & ATTR_DMI))
xfs_ichgtime(ip, XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
} else if ((vap->va_size <= ip->i_size) ||
((vap->va_size == 0) && ip->i_d.di_nextents)) {
/*