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xfs: handle 64-bit length in xfs_iozero

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We'll want to use this code for large offsets now that we're
skipping holes and unwritten extents efficiently.  Also rename it to
xfs_zero_range to be a bit more descriptive, and tell the caller if
we actually did any zeroing.

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:
Christoph Hellwig 2016-06-21 09:56:26 +10:00 committed by Dave Chinner
parent 459f0fbc2a
commit 7bb41db3ea
2 changed files with 8 additions and 6 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

11
fs/xfs/xfs_file.c
View file

@ -85,10 +85,11 @@ xfs_rw_ilock_demote(
* Holes and unwritten extents will be left as-is as they already are zeroed.
*/
int
xfs_iozero(
xfs_zero_range(
struct xfs_inode *ip,
loff_t pos,
size_t count)
xfs_off_t pos,
xfs_off_t count,
bool *did_zero)
{
return iomap_zero_range(VFS_I(ip), pos, count, NULL, &xfs_iomap_ops);
}
@ -419,7 +420,7 @@ xfs_zero_last_block(
if (isize + zero_len > offset)
zero_len = offset - isize;
*did_zeroing = true;
return xfs_iozero(ip, isize, zero_len);
return xfs_zero_range(ip, isize, zero_len, NULL);
}
/*
@ -518,7 +519,7 @@ xfs_zero_eof(
if ((zero_off + zero_len) > offset)
zero_len = offset - zero_off;
error = xfs_iozero(ip, zero_off, zero_len);
error = xfs_zero_range(ip, zero_off, zero_len, NULL);
if (error)
return error;

3
fs/xfs/xfs_inode.h
View file

@ -434,7 +434,8 @@ 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_iozero(struct xfs_inode *ip, loff_t pos, size_t count);
int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count,
bool *did_zero);
loff_t __xfs_seek_hole_data(struct inode *inode, loff_t start,
loff_t eof, int whence);