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btrfs: don't return VM_FAULT_SIGBUS on failure to set delalloc for mmap write

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If the call to btrfs_set_extent_delalloc() fails we are always returning
VM_FAULT_SIGBUS, which is odd since the error means "bad access" and the
most likely cause for btrfs_set_extent_delalloc() is -ENOMEM, which should
be translated to VM_FAULT_OOM.

Instead of returning VM_FAULT_SIGBUS return vmf_error(ret2), which gives
us a more appropriate return value, and we use that everywhere else too.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2025-05-14 12:18:07 +01:00
committed by David Sterba
parent a08625f825
commit d8cddf2a1d
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/file.c
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@@ -1937,7 +1937,7 @@ static vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf)
&cached_state);
if (ret2) {
btrfs_unlock_extent(io_tree, page_start, page_end, &cached_state);
ret = VM_FAULT_SIGBUS;
ret = vmf_error(ret2);
goto out_unlock;
}