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mm/shmem.c: use new return type vm_fault_t

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Use new return type vm_fault_t for fault handler.  For now, this is just
documenting that the function returns a VM_FAULT value rather than an
errno.  Once all instances are converted, vm_fault_t will become a
distinct type.

See commit 1c8f422059 ("mm: change return type to vm_fault_t")

vmf_error() is the newly introduce inline function in 4.17-rc6.

Link: http://lkml.kernel.org/r/20180521202410.GA17912@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Souptick Joarder 2018-06-07 17:09:17 -07:00 committed by Linus Torvalds
parent 325d7d4a96
commit 20acce6799
1 changed files with 6 additions and 6 deletions
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12
mm/shmem.c
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@ -1947,14 +1947,14 @@ static int synchronous_wake_function(wait_queue_entry_t *wait, unsigned mode, in
return ret; return ret;
} }
static int shmem_fault(struct vm_fault *vmf) static vm_fault_t shmem_fault(struct vm_fault *vmf)
{ {
struct vm_area_struct *vma = vmf->vma; struct vm_area_struct *vma = vmf->vma;
struct inode *inode = file_inode(vma->vm_file); struct inode *inode = file_inode(vma->vm_file);
gfp_t gfp = mapping_gfp_mask(inode->i_mapping); gfp_t gfp = mapping_gfp_mask(inode->i_mapping);
enum sgp_type sgp; enum sgp_type sgp;
int error; int err;
int ret = VM_FAULT_LOCKED; vm_fault_t ret = VM_FAULT_LOCKED;
/* /*
* Trinity finds that probing a hole which tmpfs is punching can * Trinity finds that probing a hole which tmpfs is punching can
@ -2022,10 +2022,10 @@ static int shmem_fault(struct vm_fault *vmf)
else if (vma->vm_flags & VM_HUGEPAGE) else if (vma->vm_flags & VM_HUGEPAGE)
sgp = SGP_HUGE; sgp = SGP_HUGE;
error = shmem_getpage_gfp(inode, vmf->pgoff, &vmf->page, sgp, err = shmem_getpage_gfp(inode, vmf->pgoff, &vmf->page, sgp,
gfp, vma, vmf, &ret); gfp, vma, vmf, &ret);
if (error) if (err)
return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS); return vmf_error(err);
return ret; return ret;
} }