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xfs: remove xfs_zero_range

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This helper doesn't add any real value over just calling iomap_zero_range
directly, so remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2018-03-13 23:15:32 -07:00 committed by Darrick J. Wong
parent c7dbe3f2c4
commit f5c54717bf
4 changed files with 14 additions and 53 deletions
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11
fs/xfs/xfs_bmap_util.c
View File

@ -1208,18 +1208,15 @@ xfs_free_file_space(
/*
* Now that we've unmap all full blocks we'll have to zero out any
* partial block at the beginning and/or end. xfs_zero_range is
* smart enough to skip any holes, including those we just created,
* but we must take care not to zero beyond EOF and enlarge i_size.
* partial block at the beginning and/or end. iomap_zero_range is smart
* enough to skip any holes, including those we just created, but we
* must take care not to zero beyond EOF and enlarge i_size.
*/
if (offset >= XFS_ISIZE(ip))
return 0;
if (offset + len > XFS_ISIZE(ip))
len = XFS_ISIZE(ip) - offset;
return xfs_zero_range(ip, offset, len, NULL);
return iomap_zero_range(VFS_I(ip), offset, len, NULL, &xfs_iomap_ops);
}
/*

48
fs/xfs/xfs_file.c
View File

@ -48,20 +48,6 @@
static const struct vm_operations_struct xfs_file_vm_ops;
/*
* Clear the specified ranges to zero through either the pagecache or DAX.
* Holes and unwritten extents will be left as-is as they already are zeroed.
*/
int
xfs_zero_range(
struct xfs_inode *ip,
xfs_off_t pos,
xfs_off_t count,
bool *did_zero)
{
return iomap_zero_range(VFS_I(ip), pos, count, did_zero, &xfs_iomap_ops);
}
int
xfs_update_prealloc_flags(
struct xfs_inode *ip,
@ -300,31 +286,6 @@ xfs_file_read_iter(
return ret;
}
/*
* Zero any on disk space between the current EOF and the new, larger EOF.
*
* This handles the normal case of zeroing the remainder of the last block in
* the file and the unusual case of zeroing blocks out beyond the size of the
* file. This second case only happens with fixed size extents and when the
* system crashes before the inode size was updated but after blocks were
* allocated.
*
* Expects the iolock to be held exclusive, and will take the ilock internally.
*/
int /* error (positive) */
xfs_zero_eof(
struct xfs_inode *ip,
xfs_off_t offset, /* starting I/O offset */
xfs_fsize_t isize, /* current inode size */
bool *did_zeroing)
{
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT(offset > isize);
trace_xfs_zero_eof(ip, isize, offset - isize);
return xfs_zero_range(ip, isize, offset - isize, did_zeroing);
}
/*
* Common pre-write limit and setup checks.
*
@ -344,6 +305,7 @@ xfs_file_aio_write_checks(
ssize_t error = 0;
size_t count = iov_iter_count(from);
bool drained_dio = false;
loff_t isize;
restart:
error = generic_write_checks(iocb, from);
@ -380,7 +342,8 @@ restart:
* and hence be able to correctly determine if we need to run zeroing.
*/
spin_lock(&ip->i_flags_lock);
if (iocb->ki_pos > i_size_read(inode)) {
isize = i_size_read(inode);
if (iocb->ki_pos > isize) {
spin_unlock(&ip->i_flags_lock);
if (!drained_dio) {
if (*iolock == XFS_IOLOCK_SHARED) {
@ -401,7 +364,10 @@ restart:
drained_dio = true;
goto restart;
}
error = xfs_zero_eof(ip, iocb->ki_pos, i_size_read(inode), NULL);
trace_xfs_zero_eof(ip, isize, iocb->ki_pos - isize);
error = iomap_zero_range(inode, isize, iocb->ki_pos - isize,
NULL, &xfs_iomap_ops);
if (error)
return error;
} else

4
fs/xfs/xfs_inode.h
View File

@ -443,10 +443,6 @@ enum xfs_prealloc_flags {
int xfs_update_prealloc_flags(struct xfs_inode *ip,
enum xfs_prealloc_flags flags);
int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset,
xfs_fsize_t isize, bool *did_zeroing);
int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count,
bool *did_zero);
/* from xfs_iops.c */
extern void xfs_setup_inode(struct xfs_inode *ip);

4
fs/xfs/xfs_iops.c
View File

@ -875,7 +875,9 @@ xfs_setattr_size(
* truncate.
*/
if (newsize > oldsize) {
error = xfs_zero_eof(ip, newsize, oldsize, &did_zeroing);
trace_xfs_zero_eof(ip, oldsize, newsize - oldsize);
error = iomap_zero_range(inode, oldsize, newsize - oldsize,
&did_zeroing, &xfs_iomap_ops);
} else {
error = iomap_truncate_page(inode, newsize, &did_zeroing,
&xfs_iomap_ops);