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xfs: always take XFS_MMAPLOCK shared in xfs_dax_read_fault

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After the previous refactoring, xfs_dax_fault is now never used for write
faults, so don't bother with the xfs_ilock_for_write_fault logic to
protect against writes when remapping is in progress.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-06-23 07:44:30 +02:00 committed by Chandan Babu R
parent 6a39ec1d39
commit 4e82fa11fb
1 changed files with 2 additions and 3 deletions
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5
fs/xfs/xfs_file.c
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@ -1279,12 +1279,11 @@ xfs_dax_read_fault(
unsigned int order)
{
struct xfs_inode *ip = XFS_I(file_inode(vmf->vma->vm_file));
unsigned int lock_mode;
vm_fault_t ret;
lock_mode = xfs_ilock_for_write_fault(ip);
xfs_ilock(ip, XFS_MMAPLOCK_SHARED);
ret = xfs_dax_fault_locked(vmf, order, false);
xfs_iunlock(ip, lock_mode);
xfs_iunlock(ip, XFS_MMAPLOCK_SHARED);
return ret;
}