diff options
| -rw-r--r-- | fs/dax.c | 9 | ||||
| -rw-r--r-- | fs/ext2/file.c | 2 | ||||
| -rw-r--r-- | fs/ext4/file.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_file.c | 2 | ||||
| -rw-r--r-- | include/linux/dax.h | 2 |
5 files changed, 10 insertions, 7 deletions
@@ -1096,7 +1096,7 @@ static bool dax_fault_is_synchronous(unsigned long flags, } static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp, - const struct iomap_ops *ops) + int *iomap_errp, const struct iomap_ops *ops) { struct vm_area_struct *vma = vmf->vma; struct address_space *mapping = vma->vm_file->f_mapping; @@ -1149,6 +1149,8 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp, * that we never have to deal with more than a single extent here. */ error = ops->iomap_begin(inode, pos, PAGE_SIZE, flags, &iomap); + if (iomap_errp) + *iomap_errp = error; if (error) { vmf_ret = dax_fault_return(error); goto unlock_entry; @@ -1488,6 +1490,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp, * @vmf: The description of the fault * @pe_size: Size of the page to fault in * @pfnp: PFN to insert for synchronous faults if fsync is required + * @iomap_errp: Storage for detailed error code in case of error * @ops: Iomap ops passed from the file system * * When a page fault occurs, filesystems may call this helper in @@ -1496,11 +1499,11 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp, * successfully. */ int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size, - pfn_t *pfnp, const struct iomap_ops *ops) + pfn_t *pfnp, int *iomap_errp, const struct iomap_ops *ops) { switch (pe_size) { case PE_SIZE_PTE: - return dax_iomap_pte_fault(vmf, pfnp, ops); + return dax_iomap_pte_fault(vmf, pfnp, iomap_errp, ops); case PE_SIZE_PMD: return dax_iomap_pmd_fault(vmf, pfnp, ops); default: diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 2da67699dc33..09640220fda8 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -100,7 +100,7 @@ static int ext2_dax_fault(struct vm_fault *vmf) } down_read(&ei->dax_sem); - ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, &ext2_iomap_ops); + ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, NULL, &ext2_iomap_ops); up_read(&ei->dax_sem); if (vmf->flags & FAULT_FLAG_WRITE) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index a0ae27b1bc66..1c7cd882d998 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -314,7 +314,7 @@ static int ext4_dax_huge_fault(struct vm_fault *vmf, } else { down_read(&EXT4_I(inode)->i_mmap_sem); } - result = dax_iomap_fault(vmf, pe_size, &pfn, &ext4_iomap_ops); + result = dax_iomap_fault(vmf, pe_size, &pfn, NULL, &ext4_iomap_ops); if (write) { ext4_journal_stop(handle); /* Handling synchronous page fault? */ diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 8601275cc5e6..9ea08326f876 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -1048,7 +1048,7 @@ __xfs_filemap_fault( if (IS_DAX(inode)) { pfn_t pfn; - ret = dax_iomap_fault(vmf, pe_size, &pfn, &xfs_iomap_ops); + ret = dax_iomap_fault(vmf, pe_size, &pfn, NULL, &xfs_iomap_ops); if (ret & VM_FAULT_NEEDDSYNC) ret = dax_finish_sync_fault(vmf, pe_size, pfn); } else { diff --git a/include/linux/dax.h b/include/linux/dax.h index 5258346c558c..0185ecdae135 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -96,7 +96,7 @@ bool dax_write_cache_enabled(struct dax_device *dax_dev); ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, const struct iomap_ops *ops); int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size, - pfn_t *pfnp, const struct iomap_ops *ops); + pfn_t *pfnp, int *errp, const struct iomap_ops *ops); int dax_finish_sync_fault(struct vm_fault *vmf, enum page_entry_size pe_size, pfn_t pfn); int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); |